List of Publications
2024
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2023
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2022
-
Helms, B. A.
"Electrifying the upcycling of plastics"
Nat. Synth. 2022, 1, 919-920
[pdf]
-
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]
-
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]
-
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]
-
Helms, B. A.
"Polydiketoenamines for a Circular Plastics Economy"
Acc. Chem. Res. 2022, 55, 2753–2765.
[pdf]
-
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]
-
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]
-
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]
-
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]
-
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]
2021
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2020
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2019
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
Helms, B. A.; Seferos, D. S.
“Virtual Issue: Designing Polymers for Use in Electrochemical Energy Storage Devices”
Macromolecules 2019, 52, 1349–1353.
[pdf]
-
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]
2018
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
Toor, A.; Lamb, S.; Helms, B. A.; Russell, T. P.
“Reconfigurable Microfluidic Droplets Stabilized by Nanoparticle Surfactants”
ACS Nano 2018, 12, 2365–2372.
[pdf]
-
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]
-
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]
-
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]
-
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]
2017
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2016
-
Helms, B. A.; Russell, T. P.
“Reaction: Polymer Chemistries Enabling Cradle-to-Cradle Life Cycles for Plastics”
Chem 2016, 1, 813–819.
[pdf]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2015
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
Helms, B. A.; Williams, T. E.; Buonsanti, R.; Milliron, D. J.
"Colloidal Nanocrystal Frameworks"
Adv. Mater. 2015, 27, 5820–5829.
[pdf]
-
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]
-
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]
2014
-
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]
-
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]
-
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]
-
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]
-
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]
2013
-
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]
-
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]
-
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]
-
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]
2012
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
-
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]
2011
- 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]
- 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]
- 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]
- 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]
- 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]
- 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]
- 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]
- 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]
- 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]
- 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]
2010
- 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]
- 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]
- 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]
2009 and before
- 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]
- 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]
- 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]
- 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]
- Helms, B.; Meijer, E. W. “Dendrimers at Work” Science 2006, 313, 929–930. [pdf]
- Helms, B.; Fréchet, J. M. J. “The Dendrimer Effect in Homogeneous Catalysis” Adv. Syn. Catal. 2006, 348, 1125–1148. [pdf]
- 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]
- 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]
- 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]
- 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]