skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Unusual Internal Electron Transfer in Conjugated Radical Polymers

 [1];  [1];  [1]; ORCiD logo [1]
  1. Artie McFerrin Department of Chemical Engineering and Department of Materials Science and Engineering, T, exas A&M University, 3122 TAMU College Station TX 77843-3122 USA
Publication Date:
Sponsoring Org.:
OSTI Identifier:
Grant/Contract Number:
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Angewandte Chemie (International Edition)
Additional Journal Information:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 56; Journal Issue: 33; Related Information: CHORUS Timestamp: 2017-10-20 17:46:41; Journal ID: ISSN 1433-7851
Wiley Blackwell (John Wiley & Sons)
Country of Publication:

Citation Formats

Li, Fei, Gore, Danielle N., Wang, Shaoyang, and Lutkenhaus, Jodie L.. Unusual Internal Electron Transfer in Conjugated Radical Polymers. Germany: N. p., 2017. Web. doi:10.1002/anie.201705204.
Li, Fei, Gore, Danielle N., Wang, Shaoyang, & Lutkenhaus, Jodie L.. Unusual Internal Electron Transfer in Conjugated Radical Polymers. Germany. doi:10.1002/anie.201705204.
Li, Fei, Gore, Danielle N., Wang, Shaoyang, and Lutkenhaus, Jodie L.. 2017. "Unusual Internal Electron Transfer in Conjugated Radical Polymers". Germany. doi:10.1002/anie.201705204.
title = {Unusual Internal Electron Transfer in Conjugated Radical Polymers},
author = {Li, Fei and Gore, Danielle N. and Wang, Shaoyang and Lutkenhaus, Jodie L.},
abstractNote = {},
doi = {10.1002/anie.201705204},
journal = {Angewandte Chemie (International Edition)},
number = 33,
volume = 56,
place = {Germany},
year = 2017,
month = 7

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 19, 2018
Publisher's Accepted Manuscript

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

Save / Share:
  • The authors report observations concerning the intermolecular photoinduced electron transfer through blends of n-type/p-type {pi}-conjugated organic polymers. The results of transient absorption spectroscopy, fluorescence quenching analysis, and delocalized radical ion pair generation studies imply that these materials are supramolecular materials.
  • Charge generation and separation dynamics in donor:acceptor systems based on composites of branched CdSe nanoparticles with a phenyl-cored thiophene-containing dendrimer (4G1-3S), or a low-bandgap conjugated polymer (PCPDTBT) are reported upon exclusive excitation of the donor or the acceptor. Time-resolved microwave conductivity is used to study the dynamics of either transfer of holes from the nanoparticle to dendrimer, or conversely the transfer of electrons from the polymer to the nanoparticle. Higher photoconductance signals and longer decay-times are correlated with device efficiencies, where composites with higher nanoparticle concentration exhibit higher solar photovoltaic power conversion efficiencies and an increase in external quantum efficiencies.more » This work evaluates the contribution of both components to device performance, but specifically the role of photoexcited nanoparticles.« less
  • We study the effect of an electric field of up to 100 kV/cm on photoexcitations in pristine and C{sub 60}-doped {pi}-conjugated polymers by electromodulated photoinduced absorption (EPA). In EPA, we measure changes in the photoinduced absorption of a polymer film induced by an electric field. The dominant effect is a change in the photoexcitation recombination kinetics, which leads to reduction or enhancement of the PA bands. We found that the electric field increases the decay rate of charge-transfer excitations; exciton dissociation near defects and impurities was also enhanced. A Stark shift of the photoexcitation energy levels for C{sub 60}-doped poly({italmore » para}-phenylene) was also detected. From the EPA we calculate that the polarizability of the charge-transfer excitations in this blend is of order 3{times}10{sup 7}({Angstrom}thinsp){sup 3}. This is two orders of magnitude larger than the polarizability of the 1B{sub u} exciton in most luminescent conjugated polymers. {copyright} {ital 1999} {ital The American Physical Society}« less