ULTRAFAST DYNAMICS OF PHOTOCHROMIC COMPOUND BASED ON OXAZINE RING OPENING

被引：20

作者：

Barkauskas, M. ^{[1
]}

Martynaitis, V. ^{[2
]}

Sackus, A. ^{[2
]}

Rotomskis, R. ^{[1
]}

Sirutkaitis, V. ^{[1
]}

Vengris, M. ^{[1
]}

机构：

[1] Vilnius State Univ, Dept Quantum Elect, LT-10223 Vilnius, Lithuania

[2] Kaunas Univ Technol, Inst Synthet Chem, LT-50254 Kaunas, Lithuania

来源：

LITHUANIAN JOURNAL OF PHYSICS | 2008年 / 48卷 / 03期

关键词：

photochromism; pump-probe; flash-photolysis; indolo[2,1-b][1,3]benzoxazine; 4-nitrophenol; 4-nitrophenolate; 3H-indolium iodide; transient absorption; ring opening;

D O I：

10.3952/lithjphys.48311

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed a femtosecond pump-probe and nanosecond flash-photolysis measurements on a new type of photochromic molecules. These photochromes incorporate an indolo[2,1-b][1,3]benzoxazine ring system which opens upon UV light excitation and closes back within a few tens of ns. The details of ring opening and spectral properties of the photoproducts have been studied by investigating the spectral signatures of the model compounds representing separate structural parts of the photochromic switch. Comparison of the photoinduced dynamics of the model compounds and those of photochromic molecule has revealed a detailed molecular picture of the light-driven switch function.

引用

页码：231 / 242

页数：12

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