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Mechano-Responsive Room Temperature Luminescence Variations of Boron Conjugated Pyrene in Air

Abstract

Stimuli responsive tunable luminescence is a promising field of research. Even though mechanofluoroscence is widely studied, mechanophosphorescence stays unexplored. Here we report the mechano-driven fluorescence and phosphorescence variations of a pyrene tetraboronic ester derivative. The fluorochromic and room temperature phosphorescence features are supported by theoretical studies and single crystal analysis. The mechanically ground fluorescence active but phosphorescence inactive pyrene tetraboronic ester exhibits room temperature phosphorescence in air with mechanical force. The efficient intermolecular electronic coupling in the dimer formed upon scratching enables a good communication between singlet and triplet states, hence results in room temperature mechanophosphorescence. The current demonstration will lead towards stimuli responsive phosphorescent materials for smart applications.

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Publication details

The article was accepted on 17 May 2018 and first published on 17 May 2018


Article type: Communication
DOI: 10.1039/C8CC03494J
Citation: Chem. Commun., 2018, Accepted Manuscript
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    Mechano-Responsive Room Temperature Luminescence Variations of Boron Conjugated Pyrene in Air

    V. Wakchaure, K. C. Ranjeesh, G. -. --, T. Das, K. Vanka, R. G. Gonnade and S. B. Sukumaran, Chem. Commun., 2018, Accepted Manuscript , DOI: 10.1039/C8CC03494J

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