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Issue 29, 2015
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Stereochemical modulation of emission behaviour in E/Z isomers of diphenyldipyrroethene from aggregation induced emission to crystallization induced emission

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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.

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

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Article information


Submitted
24 Apr 2015
Accepted
17 Jun 2015
First published
24 Jun 2015

Phys. Chem. Chem. Phys., 2015,17, 19465-19473
Article type
Paper
Author version available

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

K. Garg, E. Ganapathi, P. Rajakannu and M. Ravikanth, Phys. Chem. Chem. Phys., 2015, 17, 19465
DOI: 10.1039/C5CP02400E

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