Insight into the gelation habit of oligo(para-phenylene vinylene) derivatives: effect of end-groups

Dasgupta, D. ; Srinivasan, S. ; Rochas, C. ; Thierry, A. ; Schröder, A. ; Ajayaghosh, A. ; Guenet, J. M. (2011) Insight into the gelation habit of oligo(para-phenylene vinylene) derivatives: effect of end-groups Soft Matter, 7 (6). pp. 2797-2804. ISSN 1744-683X

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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2011...

Related URL: http://dx.doi.org/10.1039/C0SM00976H

Abstract

This paper reports a study on the gelation habits of organogels prepared in benzyl alcohol from derivatives of oligo(p-phenylene vinylene) (OPV) bearing C16H33 aliphatic wings and a series of end groups on the backbone. Significant differences are observed based on whether or not these end groups can establish hydrogen bonds with adjacent OPV molecules or with the solvent. It is particularly shown that the fibril structure, the morphology and the molecular organization not only depend upon the aliphatic wings and/or the π-π interactions of the backbones but equally on the nature of these end groups. Evidence highlighting a homogeneous nucleation process for gel formation are also presented and discussed. Discrepancies with thermoreversible gels of covalent polymers are also stressed.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:77224
Deposited On:10 Jan 2012 14:13
Last Modified:10 Jan 2012 14:13

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