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Structure Determination of Alkynyl‐Protected Gold Nanocluster Au 22 ( t BuC≡C) 18 and Its Thermochromic Luminescence
Author(s) -
Han XuShuang,
Luan Xinqi,
Su HaiFeng,
Li JiaoJiao,
Yuan ShangFu,
Lei Zhen,
Pei Yong,
Wang QuanMing
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201912984
Subject(s) - luminescence , thermochromism , crystallography , materials science , cluster (spacecraft) , fluorescence , crystal structure , single crystal , quantum yield , analytical chemistry (journal) , chemistry , optoelectronics , physics , optics , organic chemistry , computer science , programming language
An alkynyl‐protected gold nanocluster, Au 22 ( t BuC≡C) 18 ( 1 ), has been synthesized and its structure has been determined by single‐crystal X‐ray diffraction. The molecular structure consists of a Au 13 cuboctahedron kernel and three [Au 3 ( t BuC≡C) 4 ] trimeric staples. The cluster 1 has strong luminescence in the solid state with a 15 % quantum yield, and it displays interesting thermochromic luminescence as revealed by temperature‐dependent emission spectra. The enhanced room‐temperature emission is characterized as thermally activated delayed fluorescence.