Polymetalates Based Organic-Inorganic Nanocomposites

被引：61

作者：

Judeinstein, P. ^{[1
]}

Schmidt, H. ^{[1
]}

机构：

[1] Univ Saarlandes, Inst Neue Mat, D-66123 Saarbrucken, Germany

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1994年 / 3卷 / 03期

关键词：

nanocomposites; sol-gel; heteropolymetalates; photochromics; electrochemical properties;

D O I：

10.1007/BF00486557

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

New nanocomposites materials have been synthesized. They present electrochemical and photochromic properties. They are based on a hybrid organic-inorganic network, in which tungsten heteropolyoxometalates (PW12O403-, SiW12O404-, W10O324-, polymeric tungstate) are entrapped. High tungsten ratios could be reached and films or bulk materials have been obtained. The structure of these materials is described on the basis of multi-spectroscopic investigations (IR, EPR, NMR). Electrochemical redox reactions have been observed in thin films. Dark blue reversible coloration of the materials is obtained under UV irradiation. The photochromic mechanism has been investigated and shows the reversible formation of carbonyl group.

引用

页码：189 / 197

页数：9

共 35 条

[1]

[Anonymous], 1979, CHEM SILICA

[2] POLYMERS WITH IONIC-CONDUCTIVITY [J].

ARMAND, M .

ADVANCED MATERIALS, 1990, 2 (6-7) :278-286

[3]

BIDAN G, 1989, SYNTHETIC MET, V28, pC113, DOI 10.1016/0379-6779(89)90507-9

[4] DEEP ULTRAVIOLET PHOTORESIST BASED ON TUNGSTEN POLYOXOMETALATES AND POLY(VINYL ALCOHOL) FOR BILAYER PHOTOLITHOGRAPHY [J].

CARLS, JC ;

ARGITIS, P ;

HELLER, A .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (03) :786-793

[5] CRYSTAL-STRUCTURES OF ALPHA-[CO(II)W12O40]6- AND ITS HETEROPOLY BLUE 2E REDUCTION PRODUCT, ALPHA-[CO(II)W12O40]8- - STRUCTURAL, ELECTRONIC, AND CHEMICAL CONSEQUENCES OF ELECTRON DELOCALIZATION IN A MULTIATOM MIXED-VALENCE SYSTEM [J].

CASANPASTOR, N ;

GOMEZROMERO, P ;

JAMESON, GB ;

BAKER, LCW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1991, 113 (15) :5658-5663

[6]

CHEMSEDDINE A, 1984, REV CHIM MINER, V21, P487

[7] ELECTROCHEMICAL AND PHOTOCHEMICAL REDUCTION OF DECATUNGSTATE - A REINVESTIGATION [J].

CHEMSEDDINE, A ;

SANCHEZ, C ;

LIVAGE, J ;

LAUNAY, JP ;

FOURNIER, M .

INORGANIC CHEMISTRY, 1984, 23 (17) :2609-2613

[8]

Chemseddine A., 1992, J NONCRYST IN PRESS, P147

[9] SOL-GEL CONDENSATION OF RAPIDLY HYDROLYZED SILICON ALKOXIDES - A JOINT SI-29 NMR AND SMALL-ANGLE X-RAY-SCATTERING STUDY [J].

DEVREUX, F ;

BOILOT, JP ;

CHAPUT, F ;

LECOMTE, A .

PHYSICAL REVIEW A, 1990, 41 (12) :6901-6909

[10] AN INFRARED STUDY ON THE REDUCTION PROCESSES OF DODECAMOLYBDOPHOSPHATES [J].

EGUCHI, K ;

TOYOZAWA, Y ;

YAMAZOE, N ;

SEIYAMA, T .

JOURNAL OF CATALYSIS, 1983, 83 (01) :32-41

← 1 2 3 4 →