In situ spectroelectrochemical Raman studies of poly(3,4-ethylenedioxythiophene) (PEDT)

被引：642

作者：

Garreau, S ^{[1
]}

Louarn, G ^{[1
]}

Buisson, JP ^{[1
]}

Froyer, G ^{[1
]}

Lefrant, S ^{[1
]}

机构：

[1] Inst Mat Nantes, Lab Phys Cristalline, F-44322 Nantes 3, France

来源：

MACROMOLECULES | 1999年 / 32卷 / 20期

关键词：

D O I：

10.1021/ma9905674

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The vibrational properties of poly(3,4-ethylenedioxythiophene) (PEDT) have been studied by means of UV-vis-NIR optical absorption spectroscopy and resonance Raman scattering (RRS) spectroscopy with two excitation lines: green (514 nm) and infrared (1064 nm). The two-step oxidative doping process does not induce a drastic change for the Raman bands, but the changes that occur are clearly evidenced. During doping, new bands appear, indicating a modification of the electronic structure of the polymer. Vibrational calculations were carried out using a symmetrized dynamical matrix model and the results were compared with experimental data, especially in the 1200-1600 cm(-1) range, where the C-alpha=C-beta and C-beta-C-beta Stretching vibrations are active. It appears that PEDT seems to have an intermediate electronic structure, between the quinoid and benzoid structures.

引用

页码：6807 / 6812

页数：6

共 15 条

[1] A new conducting polymer radioactive source support for 4 pi beta-gamma coincidence counting [J].

deSanoit, J ;

Geffroy, B ;

Rosilio, C ;

Hainos, D .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1997, 131 (1-4) :305-312

[2] TECHNICAL APPLICATIONS FOR CONDUCTIVE POLYMERS [J].

JONAS, F ;

HEYWANG, G .

ELECTROCHIMICA ACTA, 1994, 39 (8-9) :1345-1347

[3] CONDUCTIVE MODIFICATIONS OF POLYMERS WITH POLYPYRROLES AND POLYTHIOPHENES [J].

JONAS, F ;

SCHRADER, L .

SYNTHETIC METALS, 1991, 41 (03) :831-836

[4]

KVARNSTROM C, 1999, IN PRESS SYNTH MET P

[5]

LEFRANT S, 1988, J MOL ELECTRON, V4, P167

[6] RAMAN-SPECTRA OF CONDUCTING POLYMERS WITH AROMATIC RINGS [J].

LEFRANT, S ;

BUISSON, JP ;

ECKHARDT, H .

SYNTHETIC METALS, 1990, 37 (1-3) :91-98

[7] VIBRATIONAL STUDIES OF A SERIES OF ALPHA-OLIGOTHIOPHENES AS MODEL SYSTEMS OF POLYTHIOPHENE [J].

LOUARN, G ;

BUISSON, JP ;

LEFRANT, S ;

FICHOU, D .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (29) :11399-11404

[8]

LOUARN G, 1992, J CHIM PHYS PCB, V89, P897

[9] TOWARD TUNING ELECTRICAL AND OPTICAL-PROPERTIES IN CONJUGATED POLYMERS USING SIDE-CHAINS - HIGHLY CONDUCTIVE HEAD-TO-TAIL HETEROATOM-FUNCTIONALIZED POLYTHIOPHENES [J].

MCCULLOUGH, RD ;

WILLIAMS, SP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (24) :11608-11609

[10] ELECTROCHROMIC AND HIGHLY STABLE POLY(3,4-ETHYLENEDIOXYTHIOPHENE) SWITCHES BETWEEN OPAQUE BLUE-BLACK AND TRANSPARENT SKY BLUE [J].

PEI, QB ;

ZUCCARELLO, G ;

AHLSKOG, M ;

INGANAS, O .

POLYMER, 1994, 35 (07) :1347-1351

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