Structure Determination of Alkynyl-Protected Gold Nanocluster Au22(tBuC≡C)18 and Its Thermochromic Luminescence
Xu-Shuang Han
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorXinqi Luan
Department Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province, Xiangtan, 411105 P. R. China
Search for more papers by this authorDr. Hai-Feng Su
Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 P. R. China
Search for more papers by this authorJiao-Jiao Li
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorDr. Shang-Fu Yuan
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorDr. Zhen Lei
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Dr. Yong Pei
Department Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province, Xiangtan, 411105 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Dr. Quan-Ming Wang
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorXu-Shuang Han
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorXinqi Luan
Department Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province, Xiangtan, 411105 P. R. China
Search for more papers by this authorDr. Hai-Feng Su
Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 P. R. China
Search for more papers by this authorJiao-Jiao Li
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorDr. Shang-Fu Yuan
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorDr. Zhen Lei
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Dr. Yong Pei
Department Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan Province, Xiangtan, 411105 P. R. China
Search for more papers by this authorCorresponding Author
Prof. Dr. Quan-Ming Wang
Department of Chemistry, Tsinghua University, Beijing, 100084 P. R. China
Search for more papers by this authorGraphical Abstract
Total determination: The total structure determination of an alkynyl-protected gold nanocluster, Au22(tBuC≡C)18, has been achieved. It consists of a Au13 cuboctahedron kernel and three [Au3(tBuC≡C)4] trimeric staples. The cluster displays strong thermochromic luminescence characterized as thermally activated delayed fluorescence.
Abstract
An alkynyl-protected gold nanocluster, Au22(tBuC≡C)18 (1), has been synthesized and its structure has been determined by single-crystal X-ray diffraction. The molecular structure consists of a Au13 cuboctahedron kernel and three [Au3(tBuC≡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.
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