Issue 6, 2011
From the journal:

Soft Matter

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

D. Dasgupta,a   S. Srinivasan,b   C. Rochas,c   A. Thierry,a   A. Schröder,a   A. Ajayaghosh*b  and  J. M. Guenet*a  

* Corresponding authors

a Institut Charles Sadron, CNRS UPR22, 23 rue du Loess, BP 84047, STRASBOURG Cedex2, France
E-mail: jean-michel.guenet@ics-cnrs.unistra.fr

b National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Industrial estate P.O, Pappanamcode, TRIVANDRUM, India
E-mail: aajayaghosh@rediffmail.com

c Laboratoire de Spectrométrie Physique CNRS-UJF UMR5588, SAINT MARTIN D'HERES Cedex, France

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.

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

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Article information

DOI
https://doi.org/10.1039/C0SM00976H
Article type
Paper
Submitted
13 Sep 2010
Accepted
08 Dec 2010
First published
31 Jan 2011

Soft Matter, 2011,7, 2797-2804

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

D. Dasgupta, S. Srinivasan, C. Rochas, A. Thierry, A. Schröder, A. Ajayaghosh and J. M. Guenet, Soft Matter, 2011, 7, 2797 DOI: 10.1039/C0SM00976H

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