In situ UV-visible spectroelectrochemical studies on the copolymerization of diphenylamine with anthranilic acid

被引：53

作者：

Wu, MS ^{[1
]}

Wen, TC ^{[1
]}

Gopalan, A ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2002年 / 74卷 / 01期

关键词：

spectroelectrochemistry; UV-visible; diphenylamine; anthranilic acid; copolymerization;

D O I：

10.1016/S0254-0584(01)00406-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ spectroelectrochemical studies were carried out on the polymerization of diphenylamine (DPA) and copolymerization of DPA with anthranilic acid (AA). Electropolymerization was performed in aqueous 2 M H2SO4 by applying a constant potential (0.80 V) on indium. tin oxide (ITO)-coated glass electrode. Spectral characteristics were followed for various feed ratios of the comonomers (DPA and AA) at different polymerization times. Two types of cation radicals could be observed for the electropolymerization with mixture of DPA and AA, corresponding to anilinium-type and N,N'-diphenylbenzidine-type, respectively. UV-visible spectra recorded for copolymerization inform that the peak position corresponding to DPB+. showed clear dependence on AA concentration in the feed. signifying the changes in the overall oxidation states of the polymer as a result of incorporation of AA units in the copolymer. The FTIR spectral analysis of the copolymer clearly reveals the incorporation of AA units into the polymer backbone during polymerization. The presence of a band at 1650 cm(-1) in FTIR spectra corresponding to the -C=O group of AA units and the improvement in thermal stability of the copolymer as observed from thermogravimetric analysis (TGA) favor the incorporation of AA units in the copolymer. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：58 / 65

页数：8

共 35 条

[11] ELECTROCHEMICAL SYNTHESIS AND STUDY OF POLYDIPHENYLAMINE [J].

HAYAT, U ;

BARTLETT, PN ;

DODD, GH ;

BARKER, J .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1987, 220 (02) :287-294

[12] Electrochemistry of conductive polymer .19. Oxidation of aniline at bore and polyaniline-modified platinum electrodes studied by electrochemical impedance spectroscopy [J].

Johnson, BJ ;

Park, SM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (04) :1269-1276

[13] Electrochemistry of conductive polymers .20. Early stages of aniline polymerization studied by spectroelectrochemical and rotating ring disk electrode techniques [J].

Johnson, BJ ;

Park, SM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (04) :1277-1282

[14] Preparation of poly(diphenylamine-4,4′-diyl) and related random copolymers by organometallic polycondensation.: Electrical, electrochemical, and optical properties [J].

Kim, SB ;

Harada, K ;

Yamamoto, T .

MACROMOLECULES, 1998, 31 (04) :988-993

[15]

Kriz, 1996, INTRO SPECTROSCOPY

[16] INVESTIGATION OF THE EARLY STAGES OF THE ELECTROPOLYMERIZATION OF O-TOLUIDINE BY UV-VIS REFLECTANCE SPECTROSCOPY [J].

LEGER, JM ;

BEDEN, B ;

LAMY, C ;

OCON, P ;

SIEIRO, C .

SYNTHETIC METALS, 1994, 62 (01) :9-15

[17] ANODIC-OXIDATION OF PARA-AMINODIPHENYLAMINE - AN ELECTRON-PARAMAGNETIC RESONANCE AND ELECTROCHEMICAL STUDY [J].

MALE, R ;

ALLENDOERFER, RD .

JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (22) :6237-6240

[18] UV-VIS spectroelectrochemical detection of intermediate species in the electropolymerization of an aniline derivative [J].

Malinauskas, A ;

Holze, R .

ELECTROCHIMICA ACTA, 1998, 43 (16-17) :2413-2422

[19] An in situ UV-vis spectroelectrochemical investigation of the initial stages in the electrooxidation of selected ring- and nitrogen-alkylsubstituted anilines [J].

Malinauskas, A ;

Holze, R .

ELECTROCHIMICA ACTA, 1999, 44 (15) :2613-2623

[20]

MULLER D, 1972, B SOC CHIM FR, P4083

← 1 2 3 4 →