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Issue 3, 2017
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V-shaped oxydiphthalimides: side-chain engineering regulates crystallisation-induced emission enhancement

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Abstract

Tuning the luminescence properties of solid state materials by controlling the molecular packing in the crystal has played an important role in designing new functional materials. A series of five V-shaped oxydiphthalimides (ODPs) were synthesised. Side-chain engineering has been successfully utilized to systematically tune their luminescence properties in the crystalline state by introducing sterically bulky side-chains at the imidic nitrogen. Fluorescence spectroscopy and single crystal X-ray analyses disclose the effect of conformational twisting and bulkiness of imidic substituents on crystallisation-induced emission enhancement (CIEE). Detailed analysis revealed that the CIEE factor of ODPs shows a linear dependence on the percentage volume of the side-chain.

Graphical abstract: V-shaped oxydiphthalimides: side-chain engineering regulates crystallisation-induced emission enhancement

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Article information


Submitted
09 Aug 2016
Accepted
24 Oct 2016
First published
24 Oct 2016

CrystEngComm, 2017,19, 419-425
Article type
Paper

V-shaped oxydiphthalimides: side-chain engineering regulates crystallisation-induced emission enhancement

G. Gopan, P. S. Salini, S. Deb and M. Hariharan, CrystEngComm, 2017, 19, 419
DOI: 10.1039/C6CE01738J

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