Stereochemical modulation of emission behaviour in E/Z isomers of diphenyldipyrroethene from aggregation induced emission to crystallization induced emission

Garg, K. ; Ganapathi, E. ; Rajakannu, P. ; Ravikanth, M. (2015) Stereochemical modulation of emission behaviour in E/Z isomers of diphenyldipyrroethene from aggregation induced emission to crystallization induced emission Physical Chemistry Chemical Physics, 17 (29). pp. 19465-19473. ISSN 1463-9076

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Official URL: http://pubs.rsc.org/en/content/articlelanding/2015...

Related URL: http://dx.doi.org/10.1039/C5CP02400E

Abstract

Herein, we report the synthesis, separation and characterisation of the E- and Z-isomers of dipyrrolyldiphenylethene to study their emission behaviour in the aggregation state and solid state. The E-isomer showed pronounced Aggregation Induced Emission (AIE) whereas the Z-isomer showed Crystallization Induced Emission (CIE). The present study explains that the emission behaviour (AIE/CIE) is dependent on the inter/intra molecular interactions between the molecules. The study also confirms that Restriction of Intramolecular Rotation (RIR) is the main cause of AIE/CIE in olefinic luminogens Tetraphenylethylene (TPE) type systems rather than E/Z isomerisation.

Item Type:Article
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ID Code:104935
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