Conductivity of graphene oxide films: Dependence from solvents and photoreduction

被引：26
|
作者：
Smirnov, V. A. [1 ]
Denisov, N. N. [1 ]
Ukshe, A. E. [1 ]
Shulga, Yu. M. [1 ]
机构：
[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Region, Russia
来源：
CHEMICAL PHYSICS LETTERS | 2013年 / 583卷
基金：
俄罗斯基础研究基金会;
关键词：
WATER; TRANSPORT;
D O I：
10.1016/j.cplett.2013.08.019
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：
The moisture effect on conductivity of graphene oxide (GO) films was studied. GO films of 200-500 nm thickness become conductive (Omega ranges from 10(6) to 10(2) S/cm) upon the moisture increase from 30% to 100%. Waters diffusion changes the films morphology. The UV reduction of GO reduces the film sensitivity toward moisture until the complete disappearance. Proton character conductivity is concluded for GO, the isotopic effect for the conductivity being sigma(H)/sigma(D) = 1.4 +/- 0.1. The GO film conductivity increases in polar solvents vapors (alcohols, acetone, pyridine, etc.), however, nonpolar (toluene and hexane) and chlorine containing (CCl4, CHCl3) solvents vapors do not affect the conductivity. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：155 / 159
页数：5
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