Issue 12, 2019

Tuning the solid-state emission by co-crystallization through σ- and π-hole directed intermolecular interactions

Abstract

Four new binary luminescent co-crystals and a co-crystal stoichiomorph comprising aromatic compounds and 1,4-diiodotetrafluorobenzene were successfully synthesized by the solvent drop grinding method. Structural features of these co-crystals indicate that the relative interplay of σ- and π-hole directed intermolecular interactions were observed to be responsible for modulating luminescence properties of those materials. Investigation of photoluminescence properties reveals that there is a substantial change in emission color from the starting aromatic materials to co-crystals. The I⋯N and σ-hole⋯π halogen bonds along with π-hole⋯π interactions have been instrumental towards altering the emissive properties of the luminescent materials.

Graphical abstract: Tuning the solid-state emission by co-crystallization through σ- and π-hole directed intermolecular interactions

Supplementary files

Article information

Article type
Paper
Submitted
15 Dec 2018
Accepted
12 Feb 2019
First published
13 Feb 2019

CrystEngComm, 2019,21, 1940-1947

Tuning the solid-state emission by co-crystallization through σ- and π-hole directed intermolecular interactions

R. Bhowal, S. Biswas, D. P. Adiyeri Saseendran, A. L. Koner and D. Chopra, CrystEngComm, 2019, 21, 1940 DOI: 10.1039/C8CE02118J

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