Jump to main content
Jump to site search

Issue 17, 2019
Previous Article Next Article

Cyclization reaction dynamics of an inverse type diarylethene derivative as revealed by time-resolved absorption and fluorescence spectroscopies

Author affiliations

Abstract

Photocyclization reaction dynamics of an inverse type diarylethene derivative was investigated in alkane solutions by means of ultrafast laser spectroscopies. Femtosecond transient absorption spectroscopy showed that the Franck–Condon state formed by photoexcitation is geometrically relaxed to a transient species within 100 fs and subsequently the cyclization process takes place with a time constant of 36 ps. This time constant is much longer than those in normal type derivatives. Steady-state and time-resolved fluorescence measurements with the aid of quantum chemical calculations revealed that there exist three kinds of conformers, one parallel and two anti-parallel forms, in the ground state. One of the anti-parallel conformers undergoes the cyclization reaction, while the other two conformers are nonreactive species and their major relaxation processes are radiative decay and intersystem crossing into the triplet states. The triplet states thus formed no longer undergo the cyclization reaction in the late time region.

Graphical abstract: Cyclization reaction dynamics of an inverse type diarylethene derivative as revealed by time-resolved absorption and fluorescence spectroscopies

Back to tab navigation

Supplementary files

Publication details

The article was received on 02 Dec 2018, accepted on 18 Feb 2019 and first published on 22 Feb 2019


Article type: Paper
DOI: 10.1039/C8CP07393G
Phys. Chem. Chem. Phys., 2019,21, 8623-8632

  •   Request permissions

    Cyclization reaction dynamics of an inverse type diarylethene derivative as revealed by time-resolved absorption and fluorescence spectroscopies

    H. Sotome, D. Kitagawa, T. Nakahama, S. Ito, S. Kobatake, M. Irie and H. Miyasaka, Phys. Chem. Chem. Phys., 2019, 21, 8623
    DOI: 10.1039/C8CP07393G

Search articles by author

Spotlight

Advertisements