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Issue 39, 2020
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Triboluminescence of a new family of CuI–NHC complexes in crystalline solid and in amorphous polymer films

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Abstract

Triboluminescent compounds that generate emission of light in response to mechanical stimulus are promising targets in the development of “smart materials” and damage sensors. Among triboluminescent metal complexes, rare-earth europium and terbium complexes are most widely used, while there is no systematic data on more readily available and inexpensive Cu complexes. We report a new family of photoluminescent Cu–NHC complexes that show bright triboluminescence (TL) in the crystal state visible in ambient indoor light under air. Moreover, when these complexes are blended into amorphous polymer films even at small concentrations, TL is easily observed. Observation of TL in polymer films overcomes the limitation of using crystals and opens up possibilities for the development of mechanoresponsive coatings and materials based on inexpensive metals such as Cu. Our results may also have implications for the understanding of the TL effect's origin in polymer films.

Graphical abstract: Triboluminescence of a new family of CuI–NHC complexes in crystalline solid and in amorphous polymer films

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Supplementary files

Article information


Submitted
13 Aug 2020
Accepted
21 Sep 2020
First published
21 Sep 2020

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020,11, 10814-10820
Article type
Edge Article

Triboluminescence of a new family of CuI–NHC complexes in crystalline solid and in amorphous polymer films

A. Karimata, P. H. Patil, R. R. Fayzullin, E. Khaskin, S. Lapointe and J. R. Khusnutdinova, Chem. Sci., 2020, 11, 10814
DOI: 10.1039/D0SC04442C

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