Issue 10, 2017

Multi-functional bis(alkynyl)gold(iii) N⁁C complexes with distinct mechanochromic luminescence and electroluminescence properties

Abstract

A new class of donor–acceptor type luminescent bis(alkynyl)gold(III) N⁁C complexes has been synthesized and characterized. These gold(III) complexes not only exhibit high photoluminescence quantum yields of up to 0.81, but also interesting mechanochromic luminescence behaviors that are reversible. Upon grinding, a dramatic luminescence color change from green to red can be observed in solid samples of the gold(III) complexes, and the mechanochromic luminescence can be readily tuned via a judicious selection of substituents on the pyridine ring. In addition, solution-processable OLEDs based on this class of complexes with EQE values of up to 4.0% have been realized, representing the first demonstration of bis(alkynyl)gold(III) N⁁C complexes as emissive materials in solution-processable OLEDs.

Graphical abstract: Multi-functional bis(alkynyl)gold(iii) N⁁C complexes with distinct mechanochromic luminescence and electroluminescence properties

Supplementary files

Article information

Article type
Edge Article
Submitted
29 5 2017
Accepted
06 8 2017
First published
23 8 2017
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2017,8, 6936-6946

Multi-functional bis(alkynyl)gold(III) N⁁C complexes with distinct mechanochromic luminescence and electroluminescence properties

B. Y. Wong, H. Wong, Y. Wong, V. K. Au, M. Chan and V. W. Yam, Chem. Sci., 2017, 8, 6936 DOI: 10.1039/C7SC02410J

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