Reorientation of molecules induced by intramolecular twisting

被引：1

作者：

Gulbinas, V ^{[1
]}

Karpicz, R ^{[1
]}

机构：

[1] Inst Phys, LT-2600 Vilnius, Lithuania

来源：

SYNTHETIC METALS | 2000年 / 109卷 / 1-3期

关键词：

reorientation; isomerization; twisting; triarylpyrylium cations; anisotropy;

D O I：

10.1016/S0379-6779(99)00219-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Reorientation of triarylpyrylium (TAP) cations in solvents resulted from the excited state twisting and back-twisting was observed and investigated by polarised picosecond pump-probe absorption spectroscopy. The reorientation effect was independent of the solvent viscosity. On this base, reorientation due to orientational diffusion accelerated by the local molecular heating was rejected. Coupling between two nearly perpendicular motions, molecular rotation and intramolecular twisting, is discussed. (C) 2000 Elsevier Science S.A. All rights reserved.

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页码：157 / 160

页数：4

相关论文

共 10 条

[1] Dynamics and efficiency of all-optical poling in polymers [J].

Fiorini, C ;

Nunzi, JM .

CHEMICAL PHYSICS LETTERS, 1998, 286 (5-6) :415-420

[2]

FIORINI C, 1999, IN PRESS SYNTH MET

[3]

Labarthet FL, 1996, J RAMAN SPECTROSC, V27, P491, DOI 10.1002/(SICI)1097-4555(199606)27:6<491::AID-JRS988>3.0.CO

[4]

2-G

[5] CHARGE-TRANSFER IN TRIARYL PYRYLIUM CATIONS - THEORETICAL AND EXPERIMENTAL-STUDY [J].

MARKOVITSI, D ;

SIGAL, H ;

ECOFFET, C ;

MILLIE, P ;

CHARRA, F ;

FIORINI, C ;

NUNZI, JM ;

STRZELECKA, H ;

VEBER, M ;

JALLABERT, C .

CHEMICAL PHYSICS, 1994, 182 (01) :69-80

[6] 1ST EXAMPLE OF A PYRYLIUM SALT DIMERIZATION IN SOLUTION [J].

MARKOVITSI, D ;

JALLABERT, C ;

STRZELECKA, H ;

VEBER, M .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (16) :2819-2822

[7] AZO POLYMERS FOR REVERSIBLE OPTICAL STORAGE .2. POLY[4'-[[2-(ACRYLOYLOXY)ETHYL]ETHYLAMINO]-2-CHLORO-4-NITROAZOBENZENE] [J].

NATANSOHN, A ;

XIE, S ;

ROCHON, P .

MACROMOLECULES, 1992, 25 (20) :5531-5532

[8] HIGH-SENSITIVITY MATERIAL WITH REVERSIBLE PHOTOINDUCED ANISOTROPY [J].

TODOROV, T ;

TOMOVA, N ;

NIKOLOVA, L .

OPTICS COMMUNICATIONS, 1983, 47 (02) :123-126

[9] POLARIZATION HOLOGRAPHY .1. A NEW HIGH-EFFICIENCY ORGANIC MATERIAL WITH REVERSIBLE PHOTOINDUCED BIREFRINGENCE [J].

TODOROV, T ;

NIKOLOVA, L ;

TOMOVA, N .

APPLIED OPTICS, 1984, 23 (23) :4309-4312

[10]

WIESNER U, 1991, MAKROMOL CHEM-RAPID, V12, P457