Issue 23, 2022

Solid-state fluorescence of a quasi-isostructural polymorphic biphenyl based Michael addition product

Abstract

Polymorphic materials have gained significant attention owing to their fascinating physicochemical properties. Herein, a biphenyl based Michael addition product (compound A) with an active methylene group (dimedone) was synthesized. Compound A displayed aggregation-induced emission in an ethanol–water system and in the solid state owing to its highly twisted conformation due to two bulky dimedone groups connected to a sp3 hybridized C atom. It is dimorphic in nature (forms 1 and 2) with the two forms having identical crystal packing densities (the calculated density is 1.201 g cm−3). Form 1 was solved in the P21/c monoclinic space group, whereas form 2 was solved in the P[1 with combining macron] triclinic space group. The quasi-isostructural nature of the two polymorphic systems of the synthesized compound resulted in identical photo-physical behaviours.

Graphical abstract: Solid-state fluorescence of a quasi-isostructural polymorphic biphenyl based Michael addition product

Supplementary files

Article information

Article type
Paper
Submitted
28 Mar 2022
Accepted
02 May 2022
First published
03 May 2022

CrystEngComm, 2022,24, 4262-4273

Solid-state fluorescence of a quasi-isostructural polymorphic biphenyl based Michael addition product

P. Deka, K. Patir, I. Rawal, S. Ahmed, S. R. Bora, D. J. Kalita, K. Althubeiti, S. K. Gogoi, P. Sarma and R. Thakuria, CrystEngComm, 2022, 24, 4262 DOI: 10.1039/D2CE00425A

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