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Luminescence Regulation of Silver‐Thiolate Clusters Protected by 1, 2‐Dithiolate ‐ o ‐carborane
Author(s) -
Liu LiJuan,
Mak Thomas C. W.,
Zang ShuangQuan
Publication year - 2021
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.202000250
Subject(s) - chemistry , luminescence , pyridine , carborane , pyrene , stereochemistry , metal , cluster (spacecraft) , crystallography , medicinal chemistry , organic chemistry , physics , optoelectronics , computer science , programming language
Main observation and conclusion Engineering the surface of the metal clusters with the core structure maintained and tuning their luminescence in a wide range is still a challenge in the nanomaterial research. We modified six mono‐pyridyl ligands with different electronic effects (conjugation effect or induction effect) on a superatomic silver cluster [Ag 14 (C 2 B 10 H 10 S 2 ) 6 (CH 3 CN) 8 ] (denoted as Ag 14 ) through in situ site‐specific surface engineering, and obtained the corresponding clusters [Ag 14 (C 2 B 10 H 10 S 2 ) 6 (CH 3 CN) 6 (L 1 /L 2 ) 2 ] (denoted as NC‐1, 2, L 1 /L 2 = 4‐acetylpyridine/ 4‐carboxypyridine) and [Ag 14 (C 2 B 10 H 10 S 2 ) 6 (L 3 /L 4 /L 5 /L 6 ) 8 ] (denoted as NC‐3, 4, 5, 6, L 3 /L 4 /L 5 /L 6 = 4‐phenylpyridine/4‐(1‐naphthyl)pyridine/9‐(4‐pyridine)anthracene/9‐(4‐pyridine)pyrene). Through the modification of the Ag 14 cluster, a wide‐range luminescence from blue to red was realized. This work might provide a practical guide for improving the emission performance of metal clusters via surface engineering.