Polymorphism in crystals of bis(4-bromophenyl)fumaronitrile through vapour phase growth

Torsten T. Jensen, Jason Potticary, Lui R. Terry, Hannah E. Bruce Macdonald, Jan Gerit Brandenburg, Simon R. Hall*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)
223 Downloads (Pure)

Abstract

Polymorphic selectivity within crystals grown via physical vapour transport (PVT) is dependent on the thermodynamic stabilities of differing molecular conformations and the kinetic regime within the growth apparatus. Crystals of bis(4-bromophenyl)fumaronitrile have been grown for the first time via this method, with the formation of both the conventional polymorph and a new, unforseen polymorph. Analysis suggests that the conventional form is less thermodynamically stable, with this form crystallising at higher temperature than the newly discovered form due to the release of binding energy of intermolecular interactions during the growth process. Fluorometry reveals the new form to exhibit weaker, red-shifted fluorescence emission owing to greater intermolecular π-π overlap.
Original languageEnglish
Pages (from-to)7223-7228
Number of pages6
JournalCrystEngComm
Volume19
Issue number48
Early online date17 Oct 2017
DOIs
Publication statusPublished - 28 Dec 2017

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