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Multi-functional bis(alkynyl)gold(III) N⁁C complexes with distinct mechanochromic luminescence and electroluminescence properties
Chemical Science ( IF 8.4 ) Pub Date : 2017-08-23 00:00:00 , DOI: 10.1039/c7sc02410j
Ben Yiu-Wing Wong 1, 2, 3 , Hok-Lai Wong 1, 2, 3 , Yi-Chun Wong 1, 2, 3 , Vonika Ka-Man Au 1, 2, 3 , Mei-Yee Chan 1, 2, 3 , Vivian Wing-Wah Yam 1, 2, 3
Affiliation  

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.

中文翻译:

具有明显的机械致变色发光和电致发光特性的多功能双(炔基)金()N⁁C配合物

合成并表征了新型的供体-受体类型的发光双(炔基)金(III)N⁁C配合物。这些金(III)配合物不仅表现出高达0.81的高光致发光量子产率,而且还具有可逆的有趣的机械致变色发光行为。研磨后,可以在金(III)配合物的固体样品中观察到从绿色到红色的剧烈发光颜色变化,并且可以通过明智地选择吡啶环上的取代基来容易地调节机械变色发光。此外,已经实现了基于此类配合物的可溶液处理的OLED,其EQE值高达4.0%,代表了双(炔基)金(III)N⁁C络合物作为可溶液加工的OLED中的发光材料。
更新日期:2017-09-25
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