Multiphoton-gated cycloreversion reaction of a photochromic 1,2-bis(thiazolyl) perfluorocyclopentene diarylethene derivative

被引：12

作者：

Piard, Jonathan ^{[1
]}

Ishibashi, Yukihide ^{[2
,3
]}

Saito, Hisayuki ^{[2
,3
]}

Metivier, Remi ^{[1
]}

Nakatani, Keitaro ^{[1
]}

Gavrel, Gildas ^{[4
]}

Yu, Pei ^{[4
]}

Miyasaka, Hiroshi ^{[2
,3
]}

机构：

[1] CNRS, ENS Cachan, PPSM, F-94235 Cachan, France

[2] Osaka Univ, Div Frontier Mat Sci, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[3] Osaka Univ, Ctr Quantum Sci & Technol Extreme Condit, Toyonaka, Osaka 5608531, Japan

[4] Univ Paris 11, ICMMO, CNRS UMR 8182, F-91405 Orsay, France

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2012年 / 234卷

关键词：

Photochromism; Diarylethene; Two-photon absorption; Multiphoton process; Transient absorption spectroscopy; PICOSECOND LASER PHOTOLYSIS; REACTION DYNAMICS; TRANSIENT ABSORPTION; DITHIENYLETHENE; FLUORESCENCE; CRYSTAL; POLY(N-VINYLCARBAZOLE); BISTHIENYLETHENE; SPECTROSCOPY; MODULATION;

D O I：

10.1016/j.jphotochem.2011.12.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cycloreversion processes of a 1,2-bis(thiazolyl) perfluorocyclopentene photochromic diarylethene 1 with extremely low reaction yield under steady state irradiation in chloroform solution (1.3 x 10(-3)) was investigated by means of picosecond and femtosecond laser photolysis methods. The cycloreversion reaction was drastically enhanced by more than two orders of magnitude (ca. x400) by a picosecond 532 nm laser excitation in comparison with a steady state irradiation. From time-resolved transient absorption measurements, double pulse experiments, and excitation intensity dependence of the transient absorbance and the reaction efficiency, this enhancement was attributed to a stepwise two-photon absorption process leading to high excited state. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：57 / 65

页数：9

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