List of Publications

    2024

  1. Hua, M.; Peng, Z.; Guha, R. D.; Ruan, X.; Ng, K. C.; Demarteau, J.; Haber, S.; Fricke, S. N.; Reimer, J. A.; Salmeron, M. B.; Persson, K. A.; Wang, C.; Helms, B. A. "Mechanochemically accelerated deconstruction of chemically recyclable plastics" Sci. Adv. 2024, 10, eadq3801 [pdf]
  2. Baird, M. A.; Kingsbury, R. S.; Wang, Y.; Gang, A.; Zhu, C.; Whittaker, M. L.; Helms, B. A. "Microporous Polymer Sorbents for Direct Lithium Extraction" ACS Energy Lett. 2024, 9, 4361-4368 [pdf]
  3. Byeon, Y.-W.; Mehrazi, S.; Stühmeier, B. M.; Avvaru, V. S.; Kim, D.-M.; Helms, B. A.; Cheng, L.; Kim, H. "Inverse Consequences of the SnO2 Protection Layers on Pt/C Catalysts in Proton-Exchange Membrane Fuel Cells" Energy Fuels 2024, 38, 14655-14662 [pdf]
  4. Szymanski, N. J.; Byeon, Y.-W.; Sun, Y.; Zeng, Y.; Bai, J.; Kunz, M.; Kim, D.-M.; Helms, B. A.; Bartel, C. J.; Kim, H.; Ceder, G. "Quantifying the regime of thermodynamic control for solid-state reactions during ternary metal oxide synthesis" Sci. Adv. 2024, 10, eadp3309 [pdf]
  5. Ko, Y.; Bae, J.; Chen, G.; Baird, M. A.; Yan, J.; Klivansky, L.; Kim, D.-M.; Trask, S. E.; Rodrigues, M.-T. F.; Carroll, G. M.; Neale, N. R.; Helms, B. A. "Topological Considerations in Electrolyte Additives for Passivating Silicon Anodes with Hybrid Solid–Electrolyte Interphases" ACS Energy Letters 2024, 9, 3448-3455 [pdf]
  6. Fink, Z.; Kim, P. Y.; Han, J.; Wu, X.; Popple, D.; Zhu, S.; Xue, H.; Zettl, A.; Ashby, P. D.; Helms, B. A.; Russell, T. P. "Repairable and Reconfigurable Structured Liquid Circuits" Advanced Functional Materials 2024, 34, 2402708 [pdf]
  7. Ko, Y.; Baird, M. A.; Peng, X.; Ogunfunmi, T.; Byeon, Y.-W.; Klivansky, L. M.; Kim, H.; Scott, M. C.; Chen, J.; D’Angelo, A. J.; Chen, J.; Sripad, S.; Viswanathan, V.; Helms, B. A. "Omics-enabled understanding of electric aircraft battery electrolytes" Joule 2024 [pdf]
  8. Romo, A. I. B.; Bello, L.; Pudar, S; Ibrahim, N.; Wang, Y.; Baran, M. J.; Wu, Q.; Ewoldt, R. H.; Helms, B. A.; Sing, C.; Rodríguez-López, J. "Controlling Charge Percolation in Solutions of Metal Redox Active Polymers: Implications of Microscopic Polyelectrolyte Dynamics on Macroscopic Energy Storage" J. Am. Chem. Soc. 2024, 146, 17474-17486 [pdf]
  9. Shaw, W. J.; Kidder, M. K.; Bare, S. R.; Delferro, M.; Morris, J. R.; Toma, F. M.; Senanayake, S. D.; Autrey, T.; Biddinger, E. J.; Boettcher, S.; Bowden, M. E.; Britt, P. F.; Brown, R. C.; Bullock, R. M.; Chen, J. G.; Daniel, C.; Dorhout, P. K.; Efroymson, R. A.; Gaffney, K. J.; Gagliardi, L.; Harper, A. S.; Heldebrant, D. J.; Luca, O. R.; Lyubovsky, M.; Male, J. L.; Miller, D. J.; Prozorov, T.; Rallo, R.; Rana, R.; Rioux, R. M.; Sadow, A. D.; Schaidle, J. A.; Schulte, L. A.; Tarpeh, W. A.; Vlachos, D. G.; Vogt, B. D.; Weber, R. S.; Yang, J. Y.; Arenholz, E.; Helms, B. A.; Huang, W.; Jordahl, J. L.; Karakaya, C.; Kian, K. (Cyrus); Kothandaraman, J.; Lercher, J.; Liu, P.; Malhotra, D.; Mueller, K. T.; O’Brien, C. P.; Palomino, R. M.; Qi, L.; Rodriguez, J. A.; Rousseau, R.; Russell, J. C.; Sarazen, M. L.; Sholl, D. S.; Smith, E. A.; Stevens, M. B.; Surendranath, Y.; Tassone, C. J.; Tran, B.; Tumas, W.; Walton, K. S. "A US perspective on closing the carbon cycle to defossilize difficult-to-electrify segments of our economy" Nature Reviews Chemistry 2024, 8, 376-400 [pdf]
  10. Kingsbury, R. S.; Baird, M. A.; Zhang, J.; Patel, H. D.; Baran, M. J.; Helms, B. A.; Hoek, E. M. V. "Kinetic barrier networks reveal rate limitations in ion-selective membranes" Matter 2024, 7, 2161-2183 [pdf]
  11. Wu, X.; Xue, H.; Fink, Z.; Helms, B. A.; Ashby, P. D.; Omar, A. K.; Russell, T. P. "Oversaturating Liquid Interfaces with Nanoparticle-Surfactants" Angew. Chem. Int. Ed. 2024, 63, e202403790 [pdf]
  12. Fricke, S. N.; Haber, S.; Hua, M.; Salgado, M.; Helms, B. A.; Reimer, J. A. "Magnetic resonance insights into the heterogeneous, fractal-like kinetics of chemically recyclable polymers" Sci. Adv. 2024, 10, eadl0568 [pdf]
  13. Hendrickson, T. P.; Bose, B.; Vora, N.; Huntington, T.; Nordahl, S. L.; Helms, B. A.; Scown, C. D. "Paths to circularity for plastics in the United States" One Earth 2024, 7, 520-531 [pdf]
  14. Byeon, Y.-W.; Yang, S.; Yang, G.; Kim, D.-M.; Avvaru, V. S.; Ogunfunmi, T.; Scott, M.; Helms, B. A.; Urban, J.; Kim. H. "Conductive carbon embedded beneath cathode active material for longevity of solid-state batteries" J. Mater. Chem. A 2024, 12, 8359-8369 [pdf]
  15. Wu, X.; Xue, H.; Bordia, G.; Fink, Z.; Kim, P. Y.; Streubel, R.; Han, J.; Helms, B. A.; Ashby, P. D.; Omar, A. K.; Russell, T. P. "Self-Propulsion by Directed Explosive Emulsification" Adv. Mater. 2024, 36, 2310435 [pdf]
  16. Gleeson, S. E.; Fink, Z.; Ashby, P. D.; Russell, T. P.; Helms, B. A. "Transient structuring of liquids using dissipative interfacial assemblies" Matter 2024, 7, 1092–1105 [pdf]
  17. Dailing, D. A.; Khanal, P.; Epstein, A. R.; Hua, M.; Demarteau, J. D.; Persson, K. P.; Helms, B. A. "Circular Polydiketoenamine Elastomers with Exceptional Creep Resistance via Multivalent Cross-Linker Design" ACS Cent. Sci. 2024, 10, 54–64 [pdf]
  18. 2023

  19. Neidhart, E. K.; Hua, M.; Peng, Z.; Kearney, L. T.; Bhat, V.; Vashahi, F.; Alexanian, E. J.; Sheiko, S. S.; Wang, C.; Helms, B. A.; Leibfarth, F. A. "C–H Functionalization of Polyolefins to Access Reprocessable Polyolefin Thermosets" J. Am. Chem. Soc. 2023, 145, 27450–27458 [pdf]
  20. Xia, X.; Sivonxay, E.; Helms, B. A.; Blau, S. M.; Chan, E. M. "Accelerating the Design of Multishell Upconverting Nanoparticles through Bayesian Optimization" Nano Lett. 2023, 23, 11129-11136 [pdf]
  21. Fink, Z.; Wu, X.; Kim, P. Y.; McGlasson, A.; Abdelsamie, M.; Emrick, T.; Sutter-Fella, C. M.; Ashby, P. D.; Helms, B. A.; Russell, T. P. "Mixed Nanosphere Assemblies at a Liquid–Liquid Interface" Small 2023, 19, 2308560 [pdf]
  22. Nordahl, S. L.; Baral, N. R.; Helms, B. A.; Scown, C. D. "Complementary roles for mechanical and solvent- based recycling in low- carbon, circular polypropylene" Proc. Nat. Acad. Sci. 2023, 120, 2306902120 [pdf]
  23. Ciccia, N. R.; Shi, J. X.; Pal, S.; Hua, M.; Malollari, K. G.; Lizandara-Pueyo, C.; Risto, E.; Ernst, M.; Helms, B. A.; Messersmith, P. B.; Hartwig, J. F. "Diverse functional polyethylenes by catalytic amination" Science 2023, 381, 1433-1440 [pdf]
  24. Shi, J. X.; Ciccia, N. R.; Pal, S.; Kim, D. D.; Brunn, J. N.; Lizandara-Pueyo, C.; Ernst, M.; Haydl, A. M.; Messersmith, P. B.; Helms, B. A.; Hartwig, J. F. "Chemical Modification of Oxidized Polyethylene Enables Access to Functional Polyethylenes with Greater Reuse" J. Am. Chem. Soc. 2023, 145, 21527-21537 [pdf]
  25. Zhang, W.; Walser-Kuntz, R.; Tracy, J. S.; Schramm, T. K.; Shee, J.; Head-Gordon, M.; Chen, G.; Helms, B. A.; Sanford, M. S.; Toste, F. D. "Indolo[2,3-b]quinoxaline as a Low Reduction Potential and High Stability Anolyte Scaffold for Nonaqueous Redox Flow Batteries" J. Am. Chem. Soc. 2023, 145, 18877-18887 [pdf]
  26. Bae, J.; Zhu, Z.; Yan, J.; Kim, D.-M.; Ko, Y.; Helms, B. A. "Closed-loop cathode recycling in solid-state batteries enabled by supramolecular electrolytes" Sci. Adv. 2023, 32, eadh9020. [pdf]
  27. Demarteau, J.; Cousineau, B.; Wang, Z.; Bose, B.; Cheong, S.; Lan, G.; Baral, N. R.; Teat, S. J.; Scown, C. D.; Keasling, J. D.; Helms, B. A. "Biorenewable and circular polydiketoenamine plastics" Nat. Sustain. 2023, 6, 1426–1435 [pdf]
  28. Xie, G.; Zhu, S.; Kim, P. Y.; Jiang, S.; Yi, Q.; Li, P.; Chu, Z.; Helms, B. A.; Russell, T. P. "Relaxing Wrinkles in Jammed Interfacial Assemblies" Angew. Chem. Int. Ed. 2023, 62, e202307713 [pdf]
  29. Epstein, A. R.; Demarteau, J.; Helms, B. A.; Persson, K. A. "Variable Amine Spacing Determines Depolymerization Rate in Polydiketoenamines" J. Am. Chem. Soc. 2023, 145, 8082-8089 [pdf]
  30. 2022

  31. Helms, B. A. "Electrifying the upcycling of plastics" Nat. Synth. 2022, 1, 919-920 [pdf]
  32. Green, A. M.; Kadulkar, S.; Sherman, Z. M.; Fitzsimons, T. M.; Ofosu, C. K.; Yan, J.; Zhao, D.; Ilavsky, J.; Rosales A. M.; Helms, B. A.; Ganesan V.; Truskett T. M.; Milliron, D. J. "Depletion-Driven Assembly of Polymer-Coated Nanocrystals" J. Phys. Chem. C 2022, 45, 19507-19518 [pdf]
  33. Popple, D.; Shekhirev, M.; Dai, C.; Kim, P.; Wang, K. X.; Ashby, P.; Helms, B. A.; Gogotsi, Y.; Russell, T. P.; Zettl, A. "All-Liquid Reconfigurable Electronics Using Jammed MXene Interfaces" Adv. Mater. 2022, 35, 2208148 [pdf]
  34. Baird, M. A.; Song, J.; Tao, R.; Ko, Y.; Helms, B. A. "Locally Superconcentrated Electrolytes for Ultra-Fast-Charging Lithium Metal Batteries with High-Voltage Cathodes" ACS Energy Lett. 2022, 7, 3826–3834. [pdf]
  35. Helms, B. A. "Polydiketoenamines for a Circular Plastics Economy" Acc. Chem. Res. 2022, 55, 2753–2765. [pdf]
  36. Demarteau, J.; Epstein, A. R.; Christensen, P. R.; Abubekerov, M.; Wang, H.; Teat, S. J.; Seguin, T. J.; Chan, C. W.; Scown, C. D.; Russell, T. P.; Keasling, J. D.; Persson, K. A.; Helms, B. A. "Circularity in mixed-plastic chemical recycling enabled by variable rates of polydiketoenamine hydrolysis" Sci. Adv. 2022, 8, eabp8823. [pdf]
  37. Yan, J.; Baird, M. A.; Popple, D. C.; Zettl, A.; Russell, T. P.; Helms, B. A. "Structured-Liquid Batteries" J. Am. Chem. Soc. 2022, 144, 3979−3988. [pdf]
  38. Schreiber, E.; Garwick, R. E.; Baran, M. J.; Baird, M. A.; Helms, B. A.; Matson, E. M. "Molecular Engineering of Polyoxovanadate-Alkoxide Clusters and Microporous Polymer Membranes to Prevent Crossover in Redox-Flow Batteries" ACS Appl. Mater. Interfaces, 2022, 14, 22965–22972. [pdf]
  39. Demarteau, J.; Vora, N.; Keasling, J. D.; Helms, B. A.; Scown, C. D. "Lower-Cost, Lower-Carbon Production of Circular Polydiketoenamine Plastics" ACS Sustainable Chem. Eng. 2022, 10, 2740−2749. [pdf]
  40. Xie, G.; Li, P.; Kim, P. Y.; Gu, P.; Helms, B. A.; Ashby, P. D.; Jiang, L.; Russell, T. P. "Continuous, autonomous subsurface cargo shuttling by nature-inspired meniscus-climbing systems" Nat. Chem. 2022, 14, 208−215. [pdf]
  41. 2021

  42. Forth, J.; Mariano, A.; Chai, Y.; Toor, A.; Hasnain, J.; Jiang, Y.; Feng, W.; Liu, X.; Geissler, P. L.; Menon, N.; Helms, B. A.; Ashby, P. D., Russell, T. P. "The Buckling Spectra of Nanoparticle Surfactant Assemblies" Nano Lett. 2021, 21, 7116−7122. [pdf]
  43. Korley, L. T. J.; Epps, T. H., III; Helms, B. A.; Ryan, A. J. “Toward polymer upcycling—adding value and tackling circularity” Science 2021, 373, 66–69. [pdf]
  44. Ma, L.; Pollard, T. P.; Zhang, Y.; Schroeder, M. A.; Ding, M. S.; Cresce, A. V.; Sun, R.; Baker, D. R.; Helms, B. A.; Maginn, E. J.; Wang, C.; Borodin, O.; Xu, K. “Functionalized Phosphonium Cations Enable Zinc Metal Reversibility in Aqueous Electrolytes” Angew. Chem. Int. Ed. 2021, 60, 12438–12445. [pdf]
  45. Vora, N.; Christensen, P. R.; Demarteau, J.; Baral, N. R.; Keasling, J. D.; Helms, B. A.; Scown, C. D. “Leveling the cost and carbon footprint of circular polymers that are chemically recycled to monomer” Sci. Adv. 2021, 7, eabf0187. [pdf]
  46. Baran, M. J.; Carrington, M. E.; Sahu, S.; Baskin, A.; Song, J.; Baird. M. A.; Han, K.; Mueller, K. T.; Teat, S. J.; Meckler, S. M.; Fu, C.; Prendergast, D ; Helms, B. A. “Diversity-oriented synthesis of polymer membranes with ion solvation cages” Nature 2021, 592, 225–231. [pdf]
  47. Aierken, Y.; Agrawal, A.; Sun, M.; Melander, M.; Crumlin,E. J.; Helms, B. A.; Prendergast, D “Revealing Charge-Transfer Dynamics at Electrified Sulfur Cathodes Using Constrained Density Functional Theory” J. Phys. Chem. Lett. 2021, 12, 739–744. [pdf]
  48. 2020

  49. Jasnain, J.; Jiang, Y.; Hou, H.; Yan, J.; Athanasopoulou, L.; Forth, J.; Ashby, P. D.; Helms, B. A.; Russel, T. P.; Geissler, P. L. “Spontaneous emulsification induced by nanoparticle surfactants” J. Chem. Phys. 2020, 153, 224705. [pdf]
  50. Chai, Y.; Hasnain, J.; Bahl, K.; Wong, M.; Li, D.; Geissler, P.; Kim, P. Y.; Jiang, Y.; Gu, P.; Li, S.; Lei, D.; Helms, B. A.; Russell, T. P.; Ashby, P. D. “Direct observation of nanoparticle-surfactant assembly and jamming at the water-oil interface” Sci. Adv. 2020, 6, 48. [pdf]
  51. Steinrück, H.-G.; Cao, C.; Lukatskaya, M. R.; Takacs, C. J., Wan, G.; Mackanic, D. G.; Tsao, Y.; Zhao, J.; Helms, B. A.; Xu, K.; Borodin, O.; Wishart, J. F.; Toney, M. F. “Interfacial Speciation Determines Interfacial Chemistry: X-ray-Induced Lithium Fluoride Formation from Water-in-salt Electrolytes on Solid Surfaces” Angew. Chem. Int. Ed. 2020, 59, 2–10. [pdf]
  52. Maho, A.; Saez Cabezas C. A.; Meyertons, K. A.; Reimnitz, L. C.; Sahu, S.; Helms, B. A.; Milliron, D. J. “Aqueous Processing and Spray Deposition of Polymer-Wrapped Tin-Doped Indium Oxide Nanocrystals as Electrochromic Thin Films” Chem. Mater. 2020,32, 8401–8411. [pdf]
  53. Leibfarth, F.; Helms, B. A.; Pentzer, E.; Singleton, D. A.; Lutkenhaus, J. “When Is an Article "Good" Enough?” Trends Chem. 2020, 2, 278–279. [pdf]
  54. Fu, C.; Venturi, V.; Kim, J.; Ahmad, Z.; Ells, A. W.; Viswanathan, V.; Helms, B. A. “Universal chemomechanical design rules for solid-ion conductors to prevent dendrite formation in lithium metal batteries” Nat. Mater. 2020, 19, 758–766. [pdf]
  55. Xie, G.; Forth, J.; Zhu, S.; Helms, B. A.; Ashby, P. D.; Shum, H. C.; Russell, T. P. “Hanging droplets from liquid surfaces” Proc. Natl. Acad. Sci. USA 2020, 117, 8360–8365. [pdf]
  56. Forth, J.; Toor, A.; Chai, Y.; Huang, C.; Liu, X.; Feng, W.; Shi, S.; Wang, D.; Ashby, P. D.; Helms, B. A.; Russell, T. P. “Bijels the Easy Way” in Bijels: Bicontinuous Particle-stabilized Emulsions; Clegg, P. S., Ed.; The Royal Society of Chemistry: London, 2020, pp 211–245. [pdf]
  57. He, C.; Christensen, P. R.; Seguin, T. J.; Dailing, E. A.; Wood, B. M.; Walde, R. K.; Persson, K. A.; Russell, T. P.; Helms, B. A. “Conformational Entropy as a Means to Control the Behavior of Poly(diketoenamine) Vitrimers In and Out of Equilibrium” Angew. Chem. Int. Ed. 2020, 59, 735–739. [pdf]
  58. 2019

  59. Baran, M. J.; Braten, M. N.; Sahu, S.; Baskin, A.; Meckler, S. M.; Li, L.; Maserati, L.; Carrington, M. E.; Chiang, Y.-M.; Prendergast, D.; Helms, B. A. “Design Rules for Membranes from Polymers of Intrinsic Microporosity for Crossover-free Aqueous Electrochemical Devices” Joule 2019, 3, 2968–2985. [pdf]
  60. Cain, J. D.; Azizi, A.; Maleski, K.; Anasori, B.; Glazer, E. C.; Kim, P. Y.; Gogotsi, Y.; Helms, B. A.; Russell, T. P; Zettl, A. “Sculpting Liquids with Two-Dimensional Materials: The Assembly of Ti3C2Tx MXene Sheets at Liquid–Liquid Interfaces” ACS Nano 2019, 13, 12385–12392. [pdf]
  61. Xie, G.; Forth, J.; Chai, Y.; Ashby, P. D.; Helms, B. A.; Russell, T. P. “Compartmentalized, All-Aqueous Flow-Through-Coordinated Reaction Systems” Chem 2019, 5, 2678–2690. [pdf]
  62. He, C.; Shi, S.; Wang, D.; Helms, B. A.; Russell, T. P. “Poly(oxime–ester) Vitrimers with Catalyst-Free Bond Exchange” J. Am. Chem. Soc. 2019, 141, 13753–13757. [pdf]
  63. Liu, X.; Kent, N.; Ceballos, A.; Streubel, R.; Jiang, Y.; Chai, Y.; Kim, P. Y.; Forth, J.; Hellman, F.; Shi, S.; Wang, D.; Helms, B. A.; Ashby, P. D.; Fischer, P.; Russell, T. P. “Reconfigurable ferromagnetic liquid droplets” Science 2019, 365, 264–267. [pdf]
  64. Darnall, S. M.; Li, C.; Dunbar, M.; Alsina, M.; Keten, S.; Helms, B. A.; Xu, T. “Organic Nanotube with Subnanometer, pH-Responsive Lumen” J. Am. Chem. Soc. 2019, 141, 10953–10957. [pdf]
  65. Hou, H.; Li, J.; Forth, J.; Yin, J.; Jiang, X.; Helms, B. A.; Russell, T. P. “Interfacial Activity of Amine‐Functionalized Polyhedral Oligomeric Silsesquioxanes (POSS): A Simple Strategy to Structure Liquids” Angew. Chem. Int. Ed. 2019, 58, 10142–10147. [pdf]
  66. Christensen, P. R.; Scheuermann, A. M.; Loeffler, K. E.; Helms, B. A. “Closed-loop recycling of plastics enabled by dynamic covalent diketoenamine bonds” Nat. Chem. 2019, 11, 442–448. [pdf]
  67. Feng, W.; Chai, Y.; Forth, J.; Ashby, P. D.; Russell, T. P.; Helms, B. A. “Harnessing liquid-in-liquid printing and micropatterned substrates to fabricate 3-dimensional all-liquid fluidic devices” Nature Commun. 2019, 10, 1095. [pdf]
  68. Forth, J.; Kim, P. Y.; Xie, G.; Liu, X.; Helms, B. A.; Russell, T. P. “Building Reconfigurable Devices Using Complex Liquid–Fluid Interfaces” Adv. Mater. 2019, 31, 1806370. [pdf]
  69. Helms, B. A.; Seferos, D. S. “Virtual Issue: Designing Polymers for Use in Electrochemical Energy Storage Devices” Macromolecules 2019, 52, 1349–1353. [pdf]
  70. Ma, L.; Fu, C.; Li, L.; Mayilvahanan, K. S.; Watkins, T.; Perdue, B. R.; Zavadil, K. R.; Helms, B. A. “Nanoporous Polymer Films with High Cation Transference Number Stabilize Lithium Metal Anodes in Light-Weight Batteries for Electrified Transportation” Nano Lett. 2019, 19, 1387–1394. [pdf]
  71. 2018

  72. Li, L.; Ma, L.; Helms, B. A. “Architected Macroporous Polyelectrolytes That Suppress Dendrite Formation during High-Rate Lithium Metal Electrodeposition” Macromolecules 2018, 51, 7666–7671. [pdf]
  73. Zhang, Z.; Jiang, Y.; Huang, C.; Chai, Y.; Goldfine, E.; Liu, F.; Feng, W.; Forth, J.; Williams, T. E.; Ashby, P. D.; Russell, T. P.; Helms, B. A. “Guiding kinetic trajectories between jammed and unjammed states in 2D colloidal nanocrystal-polymer assemblies with zwitterionic ligands” Sci. Adv. 2018, 4, eaap8045 [pdf]
  74. Lee, J.-H.; Siegelman, R. L.; Maserati, L.; Rangel, T.; Helms, B. A.; Long, J. R.; Neaton, J. B. “Enhancement of CO2 binding and mechanical properties upon diamine functionalization of M2(dobpdc) metal–organic frameworks” Chem. Sci. 2018, 9, 5197–5206. [pdf]
  75. Baran, M. J.; Braten, M. N.; Mototo, E. C.; Gossage, Z. T.; Ma, L.; Chénard, E.; Moore, J. S.; Rodríguez-López, J.; Helms, B. A. “Designing Redox-Active Oligomers for Crossover-Free, Non-Aqueous Redox-Flow Batteries with High Volumetric Energy Density” Chem. Mater. 2018, 30, 3861–3866. [pdf]
  76. Montoto, E. C.; Cao, Y.; Hernández-Burgos, K.; Sevov, C. S.; Braten, M. N.; Helms, B. A.; Moore, J. S.; Rodríguez-López, J. “Effect of the Backbone Tether on the Electrochemical Properties of Soluble Cyclopropenium Redox-Active Polymers” Macromolecules 2018, 51, 3539–3546. [pdf]
  77. Forth, J.; Liu, X.; Hasnain, J.; Toor, A.; Miszta, K.; Shi, S.; Geissler, P. L.; Emrick, T.; Helms, B. A.; Russell, T. P. “Reconfigurable Printed Liquids” Adv. Mater. 2018, 30, 1707603. [pdf]
  78. Toor, A.; Lamb, S.; Helms, B. A.; Russell, T. P. “Reconfigurable Microfluidic Droplets Stabilized by Nanoparticle Surfactants” ACS Nano 2018, 12, 2365–2372. [pdf]
  79. Meckler, S. M.; Bachman, J. E.; Robertson, B. P.; Zhu, C.; Long, J. R.; Helms, B. A. “Thermally Rearranged Polymer Membranes Containing Tröger's Base Units with Exceptional Performance for Air Separations” Angew. Chem., Int. Ed. 2018, 57, 4912–4916. [pdf]
  80. Hendriks, K. H.; Robinson, S. G.; Braten, M. N.; Sevov, C. S.; Helms, B. A.; Sigman, M. S.; Minteer, S. D.; Sanford, M. S. “High-Performance Oligomeric Catholytes for Effective Macromolecular Separation in Nonaqueous Redox Flow Batteries” ACS Cent. Sci. 2018, 4, 189–196. [pdf]
  81. Hwa, Y.; Frischmann, P. D.; Helms, B. A.; Cairns, E. J. “Aqueous-Processable Redox-Active Supramolecular Polymer Binders for Advanced Lithium/Sulfur Cells” Chem. Mater. 2018, 30, 685–691. [pdf]
  82. Li, C.; Meckler, S. M.; Smith, Z. P.; Bachman, J. E.; Maserati, L.; Long, J. R.; Helms, B. A. “Engineered Transport in Microporous Materials and Membranes for Clean Energy Technologies” Adv. Mater. 2018, 30, 1704953. [pdf]
  83. 2017

  84. Li, L.; Pascal, T. A.; Connell, J. G.; Fan, F. Y.; Meckler, S. M.; Ma, L.; Chiang, Y.-M.; Prendergast, D.; Helms, B. A. “Molecular Understanding of Polyelectrolyte Binders that Actively Regulate Ion Transport in Sulfur Cathodes” Nat. Commun. 2017, 8, 2277. [pdf]
  85. Maserati, L.; Meckler, S. M.; Bachman, J. E.; Long, J. R.; Helms, B. A. “Diamine-Appended Mg2(dobpdc) Nanorods as Phase-Change Fillers in Mixed-Matrix Membranes for Efficient CO2/N2 Separations” Nano Lett. 2017, 17, 6828–6832. [pdf]
  86. Huang, C.; Forth, J.; Wang, W.; Hong, K.; Smith, G. S.; Helms, B. A.; Russell, T. P. “Bicontinuous Structured Liquids With Sub-Micrometre Domains Using Nanoparticle Surfactants” Nat. Nanotechnol. 2017, 12, 1060–1063. [pdf]
  87. Huang, C.; Cui, M.; Sun, Z.; Liu, F.; Helms, B. A.; Russell, T. P. “Self-Regulated Nanoparticle Assembly at Liquid/Liquid Interfaces: A Route to Adaptive Structuring of Liquids” Langmuir 2017, 33, 7994–8001. [pdf]
  88. Ward, A. L.; Doris, S. E.; Li, L.; Hughes, M. A., Jr.; Qu, X.; Persson, K. A.; Helms, B. A. “Materials Genomics Screens for Adaptive Ion Transport Behavior by Redox-Switchable Microporous Polymer Membranes in Lithium–Sulfur Batteries” ACS Cent. Sci. 2017, 3, 399–406. [pdf]
  89. Williams, T. E.; Ushizima, D.; Zhu, C.; Anders, A.; Milliron, D. J.; Helms, B. A. “Nearest-Neighbour Nanocrystal Bonding Dictates Framework Stability or Collapse in Colloidal Nanocrystal Frameworks” Chem. Commun. 2017, 53, 4853–4856. [pdf]
  90. Toor, A.; Helms, B. A.; Russell, T. P. “Effect of Nanoparticle Surfactants on the Breakup of Free-Falling Water Jets during Continuous Processing of Reconfigurable Structured Liquid Droplets” Nano Lett. 2017, 17, 3119–3125. [pdf]
  91. Doris, S. E.; Ward, A. L.; Baskin, A.; Frischmann, P. D.; Gavvalapalli, N.; Chenard, E.; Sevov, C. S.; Prendergast, D.; Moore, J. S.; Helms, B. A. “Macromolecular Design Strategies for Preventing Active-Material Crossover in Non-Aqueous All-Organic Redox-Flow Batteries” Angew. Chem. Int. Ed. 2017, 56, 1595–1599. [pdf]
  92. 2016

  93. Helms, B. A.; Russell, T. P. “Reaction: Polymer Chemistries Enabling Cradle-to-Cradle Life Cycles for Plastics” Chem 2016, 1, 813–819. [pdf]
  94. Ushizima, D. M.; Bale, H. A.; Bethel, E. W.; Ercius, P.; Helms, B. A.; Krishnan, H.; Grinberg, L. T.; Haranczyk, M.; Macdowell, A. A.; Odziomek, K.; Parkinson, D. Y.; Perciano, T.; Ritchie, R. O.; Yang, C. “IDEAL: Images Across Domains, Experiments, Algorithms and Learning” JOM 2016, 68, 2963–2972. [pdf]
  95. Doris, S. E.; Ward, A. L.; Frischmann, P. D.; Li, L.; Helms, B. A. “Understanding and controlling the chemical evolution and polysulfide-blocking ability of lithium–sulfur battery membranes cast from polymers of intrinsic microporosity” J. Mater. Chem. A 2016, 4, 16946–16952. [pdf]
  96. Frischmann, P. D.; Hwa, Y.; Cairns, E. J.; Helms, B. A. “Redox-Active Supramolecular Polymer Binders for Lithium–Sulfur Batteries That Adapt Their Transport Properties in Operando” Chem. Mater. 2016, 28, 7414–7421. [pdf]
  97. Huang, C.; Sun, Z.; Cui, M.; Liu, F.; Helms, B. A.; Russell, T. P. “Structured Liquids with pH-Triggered Reconfigurability” Adv. Mater. 2016, 28, 6612–6618. [pdf]
  98. Maserati, L.; Meckler, S. M.; Li, C.; Helms, B. A. “Minute-MOFs: Ultrafast Synthesis of M2(dobpdc) Metal–Organic Frameworks from Divalent Metal Oxide Colloidal Nanocrystals” Chem. Mater. 2016, 28, 1581–1588. [pdf]
  99. Gerber, L. C. H.; Frischmann, P. D.; Fan, F. Y.; Doris, S. E.; Qu, X.; Scheuermann, A. M.; Persson, K.; Chiang, Y.-M.; Helms, B. A. “3-Dimensional Growth of Li2S in Lithium–Sulfur Batteries Promoted by a Redox Mediator” Nano Lett. 2016, 16, 549–554. [pdf]
  100. 2015

  101. Ong, G. K.; Williams, T. E.; Singh, A.; Schaible, E.; Helms, B. A.; Milliron, D. J. “Ordering in polymer micelle-directed assemblies of colloidal nanocrystals” Nano Lett. 2015, 15, 8240–8244. [pdf]
  102. Meckler, S. M.; Li, C.; Queen, W. L.; Williams, T. E.; Long, J. R.; Buonsanti, R.; Milliron, D. J.; Helms, B. A. "Sub-Micron Polymer–Zeolitic Imidazolate Framework Layered Hybrids via Controlled Chemical Transformation of Naked ZnO Nanocrystal Films" Chem. Mater. 2015, 27, 7673–7679. [pdf]
  103. Frischmann, P. D.; Gerber, L. C. H.; Doris, S. E.; Tsai, E. Y.; Fan, F. Y.; Qu, X.; Jain, A.; Persson, K. A.; Chiang, Y.-M.; Helms, B. A. "Supramolecular Perylene Bisimide–Polysulfide Gel Networks as Nanostructured Redox Mediators in Dissolved Polysulfide Lithium-Sulfur Batteries" Chem. Mater. 2015, 27, 6765–6770. [pdf]
  104. Li, C.; Ward, A. L.; Doris, S. E.; Pascal, T. A.; Prendergast, D.; Helms, B. A.; "A Polysulfide-Blocking Microporous Polymer Membrane Tailored for Hybrid Li–Sulfur Flow Batteries" Nano Lett. 2015, 15, 5724–5729. [pdf]
  105. Rosen, E. L.; Gilmore, K.; Sawvel, A. M.; Hammack, A. T.; Doris, S. E.; Aloni, S.; Altoe, V.; Nordlund, D.; Weng, T-C.; Sokaras, D.; Cohen, B. E.; Urban, J. J; Ogletree, D. F.; Milliron, D. J.; Prendergast, D.; Helms, B. A.; "Chemically directing d-block heterometallics to nanocrystal surfaces as molecular beacons of surface structure" Chem. Sci. 2015, 6, 6295–6304. [pdf]
  106. Kim, J.; Ong, G. K.; Wang, Y.; LeBlanc, G.; Williams, T. E.; Mattox, T. M.; Helms, B. A.; Milliron, D. J. "Nanocomposite Architecture for Rapid, Spectrally-Selective Electrochromic Modulation of Solar Transmittance" Nano Lett. 2015, 15, 5574–5579. [pdf]
  107. Gerber, L. C. H.; Frischmann, P. D.; Williams, T. E.; Tichelaar, M.; Tsai, E. Y.; Liu, Y.-S.; Guo, J.; Pemmaraju, C. D.; Prendergast, D.; Helms, B. A. "Chemical doping enhances electronic transport in networks of hexabenzocoronenes assembled in non-aqueous electrolyte" Polym. Chem. 2015, 6, 5560–5564. [pdf]
  108. Wills, A. W.; Michalak, D. J.; Ercius, P.; Rosenberg, E. R.; Perciano, T.; Ushizima, D.; Runser, R.; Helms, B. A. "Block Copolymer Packing Limits and Interfacial Reconfigurability in the Assembly of Periodic Mesoporous Organosilicas" Adv. Funct. Mater. 2015, 25, 4120–4128. [pdf]
  109. Mendelsberg, R. J.; McBride, P. M.; Duong, J. T.; Bailey, M. J.; Llordes, A.; Milliron, D. J.; Helms, B. A. "Dispersible Plasmonic Doped Metal Oxide Nanocrystal Sensors that Optically Track Redox Reactions in Aqueous Media with Single-Electron Sensitivity" Adv. Opt. Mater. 2015, 3, 1293–1300. [pdf]
  110. Helms, B. A.; Williams, T. E.; Buonsanti, R.; Milliron, D. J. "Colloidal Nanocrystal Frameworks" Adv. Mater. 2015, 27, 5820–5829. [pdf]
  111. Deng, Y.; Helms, B. A.; Rolandi, M. “Synthesis of Pyridine Chitosan and its Protonic Conductivity” J. Polym. Sci. A Polym. Chem. 2015, 53, 211–214. [pdf]
  112. Chahal, H. S.; Chahal, D. S.; McBride, P. M.; Helms, B. A. “Synthetic Control Over the Dynamics of Mesoscaled Cargo Release from Colloidal Polymer Vectors Inside Live Cells” J. Polym. Sci. A Polym. Chem. 2015, 53, 256–264. [pdf]
  113. 2014

  114. Doris, S. E.; Lynch, J. J.; Li, C.; Wills, A. W.; Urban, J. J.; Helms, B. A. "Mechanistic Insight into the Formation of Cationic Naked Nanocrystals Generated under Equilibrium Control" J. Am. Chem. Soc. 2014, 136, 15702–15710. [pdf]
  115. Rosen, E. L.; Sawvel, A. M.; Milliron, D. J.; Helms, B. A. “Influence of Surface Composition on Electronic Transport Through Naked Nanocrystal Networks” Chem. Mater. 2014, 26, 2214–2217. [pdf]
  116. Kaur, S.; Raravikar, N.; Helms, B. A.; Prasher, R.; Ogletree, D. F. “Enhanced thermal transport at covalently functionalized carbon nanotube array interfaces” Nat. Commun. 2014, 5, 3082. [pdf]
  117. Williams, T. E.; Chang, C. M.; Rosen, E. L.; Garcia, G.; Runnerstrom, E. L.; Williams, B. L.; Koo, B.; Buonsanti, R.; Milliron, D. J.; Helms, B. A. “NIR-Selective Electrochromic Heteromaterial Frameworks: a Platform to Understand Mesoscale Transport Phenomena in Solid-State Electrochemical Devices” J. Mater. Chem. C 2014, 2, 3328–3335. [pdf]
  118. Milliron, D. J.; Buonsanti, R.; Llordes, A.; Helms, B. A. “Constructing Functional Mesostructured Materials from Colloidal Nanocrystal Building Blocks” Acc. Chem. Res. 2014, 47, 236–246. [pdf]
  119. 2013

  120. Deng, Y. X.; Josberger, E.; Jin, J. H.; Helms, B. A.; Zhong, C.; Anantram, M.P.; Rolandi, M. “H+-type and OH– -type biological protonic semiconductors and complementary devices” Scientific Reports 2013, 3, 2481. [pdf]
  121. Shehabi, A.; DeForest, N.; McNeil, A.; Masanet, E.; Greenblatt, J.; Lee, E. S.; Masson, G.; Helms, B. A.; Milliron, D. J. “U.S. Energy Savings Potential from Dynamic Daylighting Control Glazings” Energy and Buildings 2013, 66, 415–423. [pdf]
  122. Rivest, J. B.; Buonsanti, R.; Pick, T. E.; Zhu, L.; Lim, E.; Clavero, C.; Schaible, E.; Helms, B. A.; Milliron, D. J. "Evolution of Ordered Metal Chalcogenide Architectures through Chemical Transformations" J. Am. Chem. Soc. 2013, 135, 7446–7449. [pdf]
  123. Rauda, I. E.; Saldarriaga-Lopez, L. C.; Helms, B. A.; Schelhas, L. T.; Membreno, D.; Milliron, D. J.; Tolbert, S. H. "Nanoporous Semiconductors Synthesized Through Polymer Templating of Ligand-Stripped CdSe Nanocrystals" Adv. Mater. 2013, 25, 1315–1322 [pdf]
  124. 2012

  125. Gerver, R. E.; Gómez-Sjöberg, R.; Baxter, B. C.; Thorn, K. S.; Fordyce, P. M.; Diaz-Botia, C. A.; Helms, B. A.; DeRisi, J. L; "Programmable Microfluidic Synthesis of Spectrally Encoded Microspheres" Lab Chip 2012, 12, 4716–4723. [pdf]
  126. Bailey, M. J.; Duong, J. T.; Helms, B. A. "Delivery of custom-purposed colloidal nanocrystals to cancer cells" Ther. Deliv. 2012, 3, 1041–1045. [pdf]
  127. Duong, J. T.; Bailey, M. J.; Pick, T. E.; McBride, P.M.; Rosen, E. L.; Buonsanti, R.; Milliron, D. J.; Helms, B. A. “Efficient Polymer Passivation of Ligand-Stripped Nanocrystal Surfaces” J. Polym. Sci. A Polym. Chem. 2012, 50, 3719–3727. [pdf]
  128. Buonsanti, R.; Pick, T. E.; Krins, N.; Richardson, T. J.; Helms, B. A.; Milliron, D. J. “Assembly of ligand‐stripped nanocrystals into precisely controlled mesoporous architectures” Nano Lett. 2012, 12, 3872–3877. [pdf]
  129. Bailey, M. J.; van der Weegen, R.; Klemm, P. J.; Baker, S. L.; Helms, B. A. “Stealth Rare Earth Oxide Nanodiscs for Magnetic Resonance Imaging” Adv. Healthcare Mater. 2012, 1, 437–442. [pdf]
  130. Chahal, D. S.; Chahal, H. S.; Bayles, A. R.; Rudié, E. N.; Helms, B. A. “Synthetic Development of Cell-Permeable Polymer Colloids Decorated with Nanocrystal Imaging Probes Optimized for Cell Tracking” Chem. Sci. 2012, 3, 2246–2251. [pdf]
  131. Albers, A. E.; Chan, E. M.; McBride, P. M.; Ajo-Franklin, C. M.; Cohen, B. E.; Helms, B. A. “Dual-Emitting Quantum Dot/Quantum Rod-Based Nanothermometers with Enhanced Response and Sensitivity in Live Cells” J. Am. Chem. Soc. 2012, 134, 9565–9568. [pdf]
  132. Rosen, E. L.; Buonsanti, R.; Llordes, A.; Sawvel, A. M.; Milliron, D. J.; Helms, B. A. “Exceptionally Mild Reactive Stripping of Native Ligands from Nanocrystal Surfaces by Using Meerwein's Salt” Angew. Chem. Int. Ed. 2012, 51, 684–689. [pdf]
  133. 2011

  134. Zhang, J.; Pick, T. E.; Gargas, D.; Dhuey, S.; Chan, E. M.; Wu, Y.; Liang, X.; Schuck, P. J.; Olynick, D. L.; Helms, B. A.; Cabrini, S. “Probe field enhancement in photonic crystals by upconversion nanoparticles” J. Vac. Sci. Technol. B 2011, 29, 06F403. [pdf]
  135. Park, S.-M.; Liang, X.; Harteneck, B. D.; Pick, T. E.; Hiroshiba, N.; Wu, Y.; Helms, B. A.; Olynick, D. L. “Sub-10 nm Nanofabrication via Nanoimprint Directed Self-Assembly of Block Copolymers” ACS Nano 2011, 5, 8523–8531. [pdf]
  136. Buonsanti, R.; Llordes, A.; Aloni, S.; Helms, B. A.; Milliron, D. J. “Tunable Infrared Absorption and Visible Transparency of Colloidal Aluminum-Doped Zinc Oxide Nanocrystals” Nano Lett. 2011, 11, 4706–4710. [pdf]
  137. Hourani, R.; Zhang, C.; van der Weegen, R.; Ruiz, L.; Li, C.-Y.; Keten, S.; Helms, B. A.; Xu, T. “Processable Cyclic Peptide Nanotubes with Tunable Interiors” J. Am. Chem. Soc. 2011, 133, 15296–15299. [pdf]
  138. Llordes, A.; Hammack, A. T.; Buonsanti, R.; Tangirala, R.; Aloni, S.; Helms, B. A.; Milliron, D. J. “Polyoxometalates and Colloidal Nanocrystals as Building Blocks for Metal Oxide Nanocomposite Films” J. Mater. Chem. 2011, 21, 11631–11638. (Invited) [pdf]
  139. Bastings, M. M. C.; Helms, B. A.; van Baal, I.; Hackeng, T. M.; Merkx, M.; Meijer, E. W. “From Phage Display to Dendrimer Display: Insights into Multivalent Binding” J. Am. Chem. Soc. 2011, 133, 6636–6641. [pdf]
  140. Voet, V. S. D.; Pick, T. E.; Park, S.-M.; Moritz, M.; Hammack, A. T.; Urban, J. J.; Ogletree, D. F.; Olynick, D. L.; Helms, B. A. “Interface Segregating Fluoralkyl-Modified Polymers for High-Fidelity Block Copolymer Nanoimprint Lithography” J. Am. Chem. Soc. 2011, 133, 2812–2815. [pdf]
  141. Breurken, M.; Lempens, E. H. M.; Temming, R. P.; Helms, B. A.; Meijer, E. W.; Merkx, M. “Collagen Targeting Using Multivalent Protein-Functionalized Dendrimers” Bioorg. Med. Chem. 2011, 19, 1062–1071. [pdf]
  142. Xu, T.; Zhao, N.; Ren, F.; Hourani, R.; Lee, M. T.; Shu, J. Y.; Mao, S.; Helms, B. A. “Subnanometer Porous Thin Films by the Co-assembly of Nanotube Subunits and Block Copolymers” ACS Nano 2011, 5, 1376–1384. [pdf]
  143. Caldwell, M. A.; Albers, A. E.; Levy, S. C.; Pick, T. E.; Cohen, B. E.; Helms, B. A.; Milliron, D. J. “Driving Oxygen Coordinated Ligand Exchange at Nanocrystal Surfaces Using Trimethylsilylated Chalcogenides” Chem. Commun. 2011, 47, 556–558. (Invited) [pdf]
  144. 2010

  145. Jensen, H. M.; Albers, A. E.; Malley, K. R.; Londer, Y. Y.; Cohen, B. E.; Helms, B. A.; Weigele, P.; Groves, J. T.; Ajo-Franklin, C. M. “Engineering of a Synthetic Electron Conduit in Living Cells” Proc. Nat. Acad. Sci. 2010, 107, 19213–19218. [pdf]
  146. Bayles, A. R.; Chahal, H. S.; Chahal, D. S.; Goldbeck, C. P.; Cohen, B. E.; Helms, B. A. “Rapid Cytosolic Delivery of Luminescent Nanocrystals to Live Cells with Endosome-Disrupting Polymer Colloids” Nano Lett. 2010, 10, 4086–4092. [pdf]
  147. Lempens, E. H. M.; Helms, B. A.; Bayles, A. R.; Merkx, Maarten; Meijer, E. W. “A Versatile, Modular Platform for Multivalent Peptide Ligands Based on a Dendritic Wedge” Eur. J. Org. Chem. 2010, 1, 111–119. [pdf]
  148. 2009 and before

  149. Helms, B. A.; Reulen, S. W. A.; Nijhuis, S.; de Graaf-Heuvenmans, P. T. M. H.; Merkx, M.; Meijer, E. W. “High-Affinity Peptide-Based Collagen Targeting Using Synthetic Phage Mimics: From Phage Display to Dendrimer Display” J. Am. Chem. Soc. 2009, 131, 11683–11685. [pdf]
  150. Lempens, E. H. M.; Helms, B. A.; Merkx, M.; Meijer, E. W. “Efficient and Chemoselective Surface Immobilization of Proteins by Using Aniline-Catalyzed Oxime Chemistry” ChemBioChem 2009, 10, 658–662. [pdf]
  151. Zhao, M.; Helms, B.; Slonkina, E.; Friedle, S.; Lee, D.; DuBois, J.; Hedman, B.; Hodgson, K. O.; Fréchet, J. M. J.; Lippard, S. J. “Iron Complexes of Dendrimer-Appended Carboxylates for Activating Dioxygen and Oxidizing Hydrocarbons” J. Am. Chem. Soc. 2008, 130, 4352–4363. [pdf]
  152. Helms, B.; van Baal, I.; Merkx, M. Meijer, E. W. “Site-Specific Protein and Peptide Immobilization on a Biosensor Surface by Pulsed Native Chemical Ligation” ChemBioChem 2007, 8, 1790–1794. [pdf]
  153. Helms, B.; Meijer, E. W. “Dendrimers at Work” Science 2006, 313, 929–930. [pdf]
  154. Helms, B.; Fréchet, J. M. J. “The Dendrimer Effect in Homogeneous Catalysis” Adv. Syn. Catal. 2006, 348, 1125–1148. [pdf]
  155. Thibault, R. J.; Takizawa, K.; Lowenheilm, P.; Helms, B.; Mynar, J. L.; Fréchet, J. M. J.; Hawker, C. J. “A Versatile New Monomer Family: Functionalized Vinyltriazoles via Click Chemistry” J. Am. Chem. Soc. 2006, 128, 12084–12085. [pdf]
  156. Helms, B.; Guillaudeu, S. J; Xie, Y.; McMurdo, M.; Hawker, C. J. Fréchet, J. M. J. “One-Pot Reaction Cascades Using Star Polymers with Core-Confined Catalysts” Angew. Chem. Int. Ed. 2005, 44, 6384–6387. [pdf]
  157. Helms, B.; Mynar, J. L.; Hawker, C. J.; Fréchet, J. M. J. “Dendronized Linear Polymers via "Click Chemistry"” J. Am. Chem. Soc. 2004, 126, 15020–15021. [pdf]
  158. Harth, E. M.; Hecht, S.; Helms, B.; Malmström, E. E.; Fréchet, J. M. J.; Hawker, C. J. “The Effect of Macromolecular Architecture in Nanomaterials: A Comparison of Site Isolation in Porphyrin Core Dendrimers and Their Isomeric Linear Analogues” J. Am. Chem. Soc. 2002, 124, 3926–3938. [pdf]