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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 of aromatic compounds and 1,4-diiodotetrafluorobenzene were successfully synthesized by solvent drop grinding method. Structural features of these co-crystals indicate that relative interplay of σ- and π-hole directed intermolecular interactions were observed to be responsible for modulating luminescent properties of those materials. Investigation of photoluminescent 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.

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Publication details

The article was received on 15 Dec 2018, accepted on 12 Feb 2019 and first published on 13 Feb 2019


Article type: Paper
DOI: 10.1039/C8CE02118J
Citation: CrystEngComm, 2019, Accepted Manuscript

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    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, Accepted Manuscript , DOI: 10.1039/C8CE02118J

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