University of Oulu

G. Kleinhans, A. K.-W. Chan, M.-Y. Leung, D. C. Liles, M. A. Fernandes, V. W.-W. Yam, I. Fernández, D. I. Bezuidenhout, Chem. Eur. J. 2020, 26, 6993.

Synthesis and photophysical properties of t‐shaped coinage‐metal complexes

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Author: Kleinhans, George1,2; Chan, Alan K.-W.3; Leung, Ming-Yi3;
Organizations: 1Chemistry Department, University of Pretoria, Private X20, Hatfield, 0028 South Africa
2Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, 2050 South Africa
3Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
4Departamento de Química Orgánica I, Centro de Innovación en Química Avanzado (ORFEO-CINQA) and, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040 Madrid, Spain
5Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P. O. Box 3000, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.2 MB)
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Language: English
Published: John Wiley & Sons, 2020
Publish Date: 2020-06-17


The photophysical properties of a series of T‐shaped coinage d10 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 AgI complex. Post‐complexation modification of the AuI complex provides access to a linear cationic AuI complex following ligand alkylation, or the first example of a cationic square planar AuIII−F complex from electrophilic attack on the metal centre. Emissions ranging from blue (CuI) to orange (AgI) 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 AuI, cationic linear AuI and square planar cationic AuIII). The higher quantum yield and longer decay lifetime of the linear gold(I) complex are indicative of increased phosphorescence contribution.

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Series: Chemistry. A European journal
ISSN: 0947-6539
ISSN-E: 1521-3765
ISSN-L: 0947-6539
Volume: 26
Issue: 31
Pages: 6993 - 6998
DOI: 10.1002/chem.202000726
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: G.K., D.I.B. and M.A.F. acknowledge the National Research Foundation, South Africa (NRF 115642; NRF 94784; NRF 100119; NRF 111705), and Sasol Technology R&D Pty. Ltd. (South Africa) for financial support (D.I.B). V.W.W.Y. acknowledges financial support from a General Research Fund (GRF) grant from the Research Grants Council of Hong Kong Special Administrative Region, P.R. China (HKU 17301517). I.F. is grateful to the Spanish Ministerio de Economía y Competitividad (MINECO) and FEDER (Grants CTQ2016‐78205‐P and CTQ2016‐81797‐REDC).
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Copyright information: © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.