Photoactive proton conductor: Poly(4-vinyl pyridine) gel

被引：15

作者：

Berestetsky, Naum ^{[1
,2
]}

Vaganova, Evgenia ^{[1
,2
]}

Wachtel, Ellen

Leitus, Gregory ^{[3
]}

Goldberg, Alexander ^{[4
]}

Yitzchaik, Shlomo ^{[1
,2
]}

机构：

[1] Hebrew Univ Jerusalem, Dept Inorgan & Analyt Chem, IL-91904 Jerusalem, Israel

[2] Hebrew Univ Jerusalem, Farkas Ctr Light Induced Proc, IL-91904 Jerusalem, Israel

[3] Weizmann Inst Sci, Chem Res Support Unit, IL-76100 Rehovot, Israel

[4] Accelyrs, Dept Mat Sci, San Diego, CA 92121 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 12期

关键词：

D O I：

10.1021/jp711038u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We describe a hydrogen-bonded poly(4-vinyl pyridine)-based dielectric material, in which conductivity can be induced due to the presence of side-chain protonated species that form spontaneously when the polymer is dissolved in pyridine. The conductivity of the proton conductive gel can be controlled by direct irradiation at the proton-transfer center: a reversible change of conductivity was observed in response to the on/off switching of 385 nm wavelength radiation. Over most of the range of intensities used, the proton conductivity exhibited a bimolecular character. We present a model of the protonated pyridine side-chain unit in the ground and excited states (DFT level). In the ground state, the protonated pyridine moiety has a cyclic, conjugated structure.

引用

页码：3662 / 3667

页数：6

共 49 条

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ADAMSON A, 1973, TXB PHYS CHEM, P566

[2] Elementary steps in excited-state proton transfer [J].