Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature

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	Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature
	Z. X. Bao ; F. Colon ; N. J. Pinto ; C. X. Liu
刊名	Synthetic Metals
	1998
卷号	94 期号:2 页码:211-213
关键词	polyaniline and derivatives pressure dependence resistance electrical-conductivity localization transport transition polymers regime
ISSN号	0379-6779
中文摘要	The electrical resistances of powdered samples of polyaniline and poly(o-toluidine) were measured as a function of pressure using a diamond anvil cell up to 22 GPa at room temperature. Since the primary influence of pressure is sample compression, application of pressure leads to an initial decrease in the resistance (enhanced conductivity) of both samples, indicating greater interchain coherence due to reduced interchain separation. Poly(o-toluidine) is seen to have higher resistance values compared with polyaniline for all pressure values recorded, consistent with the fact that it has greater disorder due to the substitution of the larger methyl group on the polymer backbone. Resistance versus pressure measurements recorded during the loading and unloading cycle show asymmetry, suggesting irreversible structural changes in both samples. The crystallinity in poly(o-toluidine) as deduced from our resistance-pressure data is seen to be slightly less than that for polyaniline. (C) 1998 Elsevier Science S.A. All rights reserved.
原文出处	://WOS:000073600400010
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/37627]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. X. Bao,F. Colon,N. J. Pinto,et al. Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature[J]. Synthetic Metals,1998,94(2):211-213.
APA	Z. X. Bao,F. Colon,N. J. Pinto,&C. X. Liu.(1998).Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature.Synthetic Metals,94(2),211-213.
MLA	Z. X. Bao,et al."Pressure dependence of the resistance in polyaniline and poly(o-toluidine) at room temperature".Synthetic Metals 94.2(1998):211-213.