Publication Date:
2015-06-20
Description:
The efficiency of biological photosynthesis results from the exquisite organization of photoactive elements that promote rapid movement of charge carriers out of a critical recombination range. If synthetic organic photovoltaic materials could mimic this assembly, charge separation and collection could be markedly enhanced. We show that micelle-forming cationic semiconducting polymers can coassemble in water with cationic fullerene derivatives to create photoinduced electron-transfer cascades that lead to exceptionally long-lived polarons. The stability of the polarons depends on the organization of the polymer-fullerene assembly. Properly designed assemblies can produce separated polaronic charges that are stable for days or weeks in aqueous solution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huber, Rachel C -- Ferreira, Amy S -- Thompson, Robert -- Kilbride, Daniel -- Knutson, Nicholas S -- Devi, Lekshmi Sudha -- Toso, Daniel B -- Challa, J Reddy -- Zhou, Z Hong -- Rubin, Yves -- Schwartz, Benjamin J -- Tolbert, Sarah H -- 1S10RR23057/RR/NCRR NIH HHS/ -- P41GM103393/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2015 Jun 19;348(6241):1340-3. doi: 10.1126/science.aaa6850.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of California-Los Angeles (UCLA), Los Angeles, CA 90095-1569, USA. ; Department of Microbiology, Immunology and Molecular Genetics, and the Biomedical Engineering Program, UCLA, Los Angeles, CA 90095, USA. ; Department of Microbiology, Immunology and Molecular Genetics, and the Biomedical Engineering Program, UCLA, Los Angeles, CA 90095, USA. The California NanoSystems Institute (CNSI), UCLA, Los Angeles, CA 90095, USA. ; Department of Chemistry and Biochemistry, University of California-Los Angeles (UCLA), Los Angeles, CA 90095-1569, USA. tolbert@chem.ucla.edu schwartz@chem.ucla.edu rubin@chem.ucla.edu. ; Department of Chemistry and Biochemistry, University of California-Los Angeles (UCLA), Los Angeles, CA 90095-1569, USA. The California NanoSystems Institute (CNSI), UCLA, Los Angeles, CA 90095, USA. tolbert@chem.ucla.edu schwartz@chem.ucla.edu rubin@chem.ucla.edu. ; Department of Chemistry and Biochemistry, University of California-Los Angeles (UCLA), Los Angeles, CA 90095-1569, USA. The California NanoSystems Institute (CNSI), UCLA, Los Angeles, CA 90095, USA. Department of Materials Science and Engineering, UCLA, Los Angeles, CA 90095, USA. tolbert@chem.ucla.edu schwartz@chem.ucla.edu rubin@chem.ucla.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26089510" target="_blank"〉PubMed〈/a〉
Keywords:
Electron Transport
;
Fullerenes/*chemistry
;
*Photosynthesis
;
Polymers/*chemistry
;
Semiconductors
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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