First Direct Observation of the Higher Triplet Excited States of Substituted Oligothiophenes by Two‐Color Two‐Laser Flash Photolysis | Zendy

Fujitsuka Mamoru | Zendy; Oseki Yosuke | Zendy; Hara Michihiro | Zendy; Cai Xichen | Zendy; Sugimoto Akira | Zendy; Majima Tetsuro | Zendy

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First Direct Observation of the Higher Triplet Excited States of Substituted Oligothiophenes by Two‐Color Two‐Laser Flash Photolysis

Author(s) -

Fujitsuka Mamoru,

Oseki Yosuke,

Hara Michihiro,

Cai Xichen,

Sugimoto Akira,

Majima Tetsuro

Publication year - 2004

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.200400169

Subject(s) - flash photolysis , picosecond , pentamer , trimer , excited state , chemistry , tetramer , photochemistry , flash (photography) , laser , photodissociation , dimer , optics , kinetics , reaction rate constant , atomic physics , organic chemistry , physics , biochemistry , quantum mechanics , enzyme

The higher triplet excited states (T n ) of oligothiophenes [trimer (3T), tetramer (4T), and pentamer (5T)] were directly observed for the first time during two‐color two‐laser flash photolysis employing a picosecond laser. The lifetimes of the T n states of the oligomers were a few tens of picoseconds. The internal conversion between T 2 –T 1 is the rate‐determining step for the oligothiophenes (see picture).

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