Intramolecular Singlet Fission in Oligoacene Heterodimers [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2016. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 3,434-3,438 : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory, United States. Department of Energy. Office of Basic Energy Sciences, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- In this Communication we investigate singlet fission (SF) in heterodimers comprising a pentacene unit covalently bonded to another acene as we systematically vary the singlet and triplet pair energies. We find that these energies control the SF process, where dimers undergo SF provided that the resulting triplet pair energy is similar or lower in energy than the singlet state. In these systems the singlet energy is determined by the lower energy chromophore, and the rate of SF is found to be relatively independent of the driving force. However, triplet pair recombination in these heterodimers follows the energy gap law. The ability to tune the energies of these materials provides a key strategy to study and design new SF materials – an important process for third generation photovoltaics.
- Published through SciTech Connect., 02/02/2016., "bnl--112602-2016-ja", "KC0403020", Angewandte Chemie (Online) 128 10 ISSN 1521-3757 AM, and Samuel N. Sanders; Elango Kumarasamy; Andrew B. Pun; Michael L. Steigerwald; Matthew L. Sfeir; Luis M. Campos.
- Funding Information:
- SC00112704, 16063, and 16058
View MARC record | catkey: 24045062