Ultrafast photoinduced ring-closure dynamics of a diarylethene polymer

被引：34

作者：

Bertarelli, C

Gallazzi, MC

Stellacci, F

Zerbi, G

Stagira, S

Nisoli, M

De Silvestri, S

机构：

[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chem, I-20133 Milan, Italy

[2] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 359卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(02)00706-6

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：

The dynamics of the ring-closure reaction of poly-1,2-bis(2-methylthien-3-yl)perfluorocyclopentene in chloroform solution is investigated. Ultrafast transient absorption spectra are measured using 260 nm pump pulses. It is shown that the optical switching occurs on a sub-200 fs timescale. The presence of a transient band around 450 nm, which disappears in similar to200 ps. is ascribed to excited-state absorption of the dithiophene moiety. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：278 / 282

页数：5

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