Pyrene-Derived Novel One- and Two-Component Organogelators

Babu, P and Sangeetha, NM and Vijaykumar, P and Maitra, Uday and Rissanen, Kari and Raju, AR (2003) Pyrene-Derived Novel One- and Two-Component Organogelators. In: Chemistry - A European Journal, 9 (9). pp. 1922-1932.

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Abstract

A new class of alkyl-chain-appended pyrene derivatives 4-14 were synthesized and evaluated for their gelation abilities. Depending on the nature of the linking group, these compounds gelated a number of organic solvents, either in the presence or in the absence of the acceptor molecule 2,4,7-trinitrofluorenone (TNF). Compounds with ester, ether, or alkyl linkages gelated a number of hydroxylic and hydrocarbon solvents by means of a charge-transfer interaction with TNF, while compounds with amide, urethane and urea linkers formed gels on their own in a variety of solvents by means of \pi-\pi stacking and hydrogen-bonding interactions. The Xray crystal structure of urethane (S)-12 showed hydrogen-bonding and stacking features, as suggested by the model. The gels obtained were investigated by spectroscopic and electron microscopic techniques which provided structural insights.

Item Type:	Journal Article
Publication:	Chemistry - A European Journal
Publisher:	Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim
Additional Information:	The copyright belongs to Wiley-VCH Verlag GmbH&Co. KGaA, Weinheim
Keywords:	aggregation;donor acceptor systems;gels;hydrogen bonding;pi interactions
Department/Centre:	Division of Chemical Sciences > Organic Chemistry
Date Deposited:	03 Mar 2006
Last Modified:	19 Sep 2010 04:23
URI:	http://eprints.iisc.ac.in/id/eprint/5595

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