Competing Singlet Fission and Excimer Formation in Solid Fluorinated 1,3-Diphenylisobenzofurans
Journal Article
·
· Journal of Physical Chemistry. C
- Univ. of Colorado, Boulder, CO (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- New York Univ., NY (United States)
- Univ. of Colorado, Boulder, CO (United States); Czech Academy of Sciences (Czech Republic)
- Univ. at Buffalo, NY (United States)
- Czech Academy of Sciences (Czech Republic
- Charles Univ. (Czech Republic)
Singlet fission (kSF) and excimer formation (kEXC) rate constants along with other photophysical properties of thin solid layers of 1,3-diphenylisobenzofuran and 11 of its fluorinated derivatives have been determined. The molecular properties of these compounds are similar, but their crystal packing varies widely. Most of them undergo singlet fission whereas excitation in others is trapped in excimers. The trend in rate constants kSF agrees qualitatively with results of calculations by a simplified version of the frontier orbital model for a molecular pair. The main shortcoming of the model is discussed.
- Research Organization:
- Univ. of Colorado, Boulder, CO (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- SC0007004; AC36-08GO28308
- OSTI ID:
- 1854333
- Alternate ID(s):
- OSTI ID: 1839383
- Report Number(s):
- NREL/JA-5900-80924; 19-22806; DMR-1420073; DMR-1608374; DMR-2003932; RVO: 61388963
- Journal Information:
- Journal of Physical Chemistry. C, Vol. 125, Issue 49; ISSN 1932-7447
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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