Singlet Fission, Polaron Generation and Intersystem Crossing in Hexaphenyl Film

Autor:	Wenjun Ni, Tianjiao Li, Christian Kloc, Licheng Sun, Gagik G. Gurzadyan
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	femtosecond spectroscopy intersystem crossing singlet exciton fission time-resolved fluorescence hexaphenyl film Organic chemistry QD241-441
Zdroj:	Molecules, Vol 27, Iss 16, p 5067 (2022)
Druh dokumentu:	article
ISSN:	1420-3049
DOI:	10.3390/molecules27165067
Popis:	The ultrafast dynamics of triplet excitons and polarons in hexaphenyl film was investigated by time-resolved fluorescence and femtosecond transient absorption techniques under various excitation photon energies. Two distinct pathways of triplet formation were clearly observed. Long-lived triplet states are populated within 4.5 ps via singlet fission-intersystem crossing, while the short-lived triplet states (1.5 ns) are generated via singlet fission from vibrational electronic states. In the meantime, polarons were formed from hot excitons on a timescale of
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/02c01af92a084b4fb078fc7dc880be7a Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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