Dynamic studies of conjugated polymers by phase-modulation IR-spectroscopy

被引：5

作者：

Furukawa, Y ^{[1
]}

机构：

[1] Waseda Univ, Sch Sci & Engn, Dept Chem, Shinjuku Ku, Tokyo 1698555, Japan

来源：

VIBRATIONAL SPECTROSCOPY | 1999年 / 19卷 / 01期

关键词：

conjugated polymers; phase-modulation infrared spectroscopy; photoexcitation dynamics;

D O I：

10.1016/S0924-2031(98)00066-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The application of phase-modulation infrared spectroscopy to the photoexcitation dynamics of conjugated polymers is described. The modulation-frequency dependencies of the intensity and phase delay of photoinduced absorption have been observed and simulated numerically on the basis of a model based on second-order kinetics involving a neutralization process between the positive and negative charge carriers (polarons) that are formed from a photogenerated interchain charge-transfer exciton (polaron pair). The rate constant of the bimolecular recombination process has been obtained. This numerical simulation is useful in analyzing the observed responses of a nonlinear system in the phase-modulation measurements. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：77 / 83

页数：7

共 33 条

[1] OPTICAL-EXCITATIONS OF POLY-3-ALKYLTHIOPHENE FILMS AND SOLUTIONS [J].

BOTTA, C ;

LUZZATI, S ;

TUBINO, R ;

BORGHESI, A .

PHYSICAL REVIEW B, 1992, 46 (20) :13008-13016

[2] PHOTOINDUCED ABSORPTION OF POLYMER-SOLUTIONS [J].

BOTTA, C ;

LUZZATI, S ;

TUBINO, R ;

BRADLEY, DDC ;

FRIEND, RH .

PHYSICAL REVIEW B, 1993, 48 (20) :14809-14817

[3]

BRADLEY DDC, 1989, SYNTHETIC MET, V29, pE121, DOI 10.1016/0379-6779(89)90286-5

[4] OPTICAL-EXCITATIONS IN POLY(2,5-THIENYLENE VINYLENE) [J].

BRASSETT, AJ ;

COLANERI, NF ;

BRADLEY, DDC ;

LAWRENCE, RA ;

FRIEND, RH ;

MURATA, H ;

TOKITO, S ;

TSUTSUI, T ;

SAITO, S .

PHYSICAL REVIEW B, 1990, 41 (15) :10586-10594

[5] MODERN MOLECULAR FLUORESCENCE SPECTROSCOPY [J].

BRIGHT, FV .

APPLIED SPECTROSCOPY, 1995, 49 (01) :A14-A19

[6] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].

BURROUGHES, JH ;

BRADLEY, DDC ;

BROWN, AR ;

MARKS, RN ;

MACKAY, K ;

FRIEND, RH ;

BURN, PL ;

HOLMES, AB .

NATURE, 1990, 347 (6293) :539-541

[7] Photoinduced infrared absorptions from conjugated polymers with nondegenerate ground states [J].

Cha, YH ;

Furukawa, Y ;

Tasumi, M ;

Noguchi, T ;

Ohnishi, T .

CHEMICAL PHYSICS LETTERS, 1997, 273 (3-4) :159-163

[8] Analysis of the intensity and phase delay of photoinduced infrared absorption from poly(2,3-thienylenevinylene) [J].

Cha, YH ;

Furukawa, Y ;

Tasumi, M ;

Noguchi, T ;

Ohnishi, T .

CHEMICAL PHYSICS LETTERS, 1997, 280 (5-6) :464-468

[9] PHOTOEXCITED STATES IN POLY(PARA-PHENYLENE VINYLENE) - COMPARISON WITH TRANS,TRANS-DISTYRYLBENZENE, A MODEL OLIGOMER [J].

COLANERI, NF ;

BRADLEY, DDC ;

FRIEND, RH ;

BURN, PL ;

HOLMES, AB ;

SPANGLER, CW .

PHYSICAL REVIEW B, 1990, 42 (18) :11670-11681

[10] PHOTOGENERATION OF POLARON PAIRS IN CONDUCTING POLYMERS [J].

CONWELL, EM ;

MIZES, HA .

PHYSICAL REVIEW B, 1995, 51 (11) :6953-6958

← 1 2 3 4 →