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Synthesis and Photophysical Properties of T‐Shaped Coinage‐Metal Complexes
Author(s) -
Kleinhans George,
Chan Alan K.W.,
Leung MingYi,
Liles David C.,
Fernandes Manuel A.,
Yam Vivian W.W.,
Fernández Israel,
Bezuidenhout Daniela I.
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202000726
Subject(s) - metal , chemistry , materials science , organic chemistry
The photophysical properties of a series of T‐shaped coinage d 10 metal complexes, supported by a bis(mesoionic carbene)carbazolide (CNC) pincer ligand, are explored. The series includes a rare new example of a tridentate T‐shaped Ag I complex. Post‐complexation modification of the Au I complex provides access to a linear cationic Au I complex following ligand alkylation, or the first example of a cationic square planar Au III −F complex from electrophilic attack on the metal centre. Emissions ranging from blue (Cu I ) to orange (Ag I ) are obtained, with variable contributions of thermally‐dependent fluorescence and phosphorescence to the observed photoluminescence. Green emissions are observed for all three gold complexes (neutral T‐shaped Au I , cationic linear Au I and square planar cationic Au III ). The higher quantum yield and longer decay lifetime of the linear gold(I) complex are indicative of increased phosphorescence contribution.