Origin of the exciton transition shift in thin films of polyaniline

被引：21

作者：

Dimitriev, OP ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Semicond Phys, UA-03028 Kiev, Ukraine

来源：

SYNTHETIC METALS | 2001年 / 125卷 / 03期

关键词：

polyaniline; thin films; electronic spectra; molecular interactions;

D O I：

10.1016/S0379-6779(01)00475-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The blue shift of the benzenoid-to-quinoid exciton transition (BQET) in thin films of the emeraldine base (EB) of polyaniline (PANI) observed earlier has been studied in more detail in order to explain its origin. It was found that the shift is partly reversible upon annealing of the films or their exposure to solvent vapors. Infra-red (IR) absorption spectra of the films did not reveal features attributable to the pernigraniline base (PB) of polyaniline. It has been proposed that direct interaction of planar benzenoid and quinoid chromophore groups rather than oxidation of the polymer chains is responsible, for the blue-shifted exciton transition in thin polyaniline films. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：359 / 363

页数：5

共 26 条

[1]

ASTURIAS GE, 1989, SYNTHETIC MET, V29, pE157

[2] Molecular self-assembly of conducting polymers [J].

Cheung, J.H. ;

Fou, A.F. ;

Rubner, M.F. .

Thin Solid Films, 1994, 244 (1 -2 pt 3) :985-989

[3] FABRICATION OF ELECTRICALLY CONDUCTIVE LANGMUIR-BLODGETT MULTILAYER FILMS OF POLYANILINE [J].

CHEUNG, JH ;

RUBNER, MF .

THIN SOLID FILMS, 1994, 244 (1-2) :990-994

[4] A study on X-ray irradiation of composite polyaniline LB films [J].

Dhanabalan, A ;

Malmonge, JA ;

Riul, A ;

Faria, RM ;

Oliveira, ON .

THIN SOLID FILMS, 1998, 327 :808-812

[5] Suppression of the emeraldine base-to-emeraldine salt transition in ultra-thin films of polyaniline [J].

Dimitriev, OP .

SYNTHETIC METALS, 2001, 122 (02) :315-319

[6] Competition between aggregate formation and conformational changes of polyaniline in binary solutions studied by electronic absorption spectroscopy [J].

Dimitriev, OP ;

Getsko, OM .

SYNTHETIC METALS, 1999, 104 (01) :27-32

[7]

DIMITRIEV OP, UNPUB

[8] Protonation of Amides [J].

Fraenkel, Gideon ;

Franconi, Cafiero .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1960, 82 (17) :4478-4483

[9] Interaction of N-methylpyrrolidone with doped polyaniline [J].

Geng, YH ;

Li, J ;

Jing, XB ;

Wang, FS .

SYNTHETIC METALS, 1997, 84 (1-3) :97-98

[10] Aggregation and orientation phenomena in constrained films of LC poly(olefin sulfone)s [J].

Haferkorn, J ;

Geue, T ;

Date, RW ;

Fawcett, AH ;

Stumpe, J .

THIN SOLID FILMS, 1998, 327 :214-220

← 1 2 3 →