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Updated: Apr 16, 2026
An Optimized Protocol for the Efficient Radiolabeling of Gold Nanoparticles by Using a 125I-labeled Azide Prosthetic Group
Published on: October 10, 2016
A study on the effect of dianionic tridentate ligands on the radiative and nonradiative processes for gold(III)
Elizabeth Suk-Hang Lam1, Wai Han Lam1, Vivian Wing-Wah Yam1
1Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China.
Abstract:
Gold(III) alkynyl complexes with dianionic tridentate pincer ligands have received growing attention recently because of their rich luminescence behavior and their potential applications in areas such as optoelectronics and sensors. In this study, density functional theory (DFT) and time-dependent DFT (TDDFT) calculations have been performed to investigate the radiative and nonradiative processes for the gold(III) alkynyl complexes with different dianionic tridentate ligands, [Au(C^N^C)(C≡CC6H5)] (1; C^N^C = 2,6-diphenylpyridine), [Au(C(Np)^N^C(Np))(C≡CC6H5)] [2; C(Np)^N^C(Np) = 2,6-di(2-naphthyl)pyridine], [Au(N^N^N)(C≡CC6H5)] [3; N^N^N = 2,6-bis(benzimidazol-2'-yl)pyridine], and [Au(C^C^N)(C≡CC6H5)] [4; C^C^N = 3-(2-pyridyl)biphenyl]. It has been found that the electronic properties of the tridentate ligand could have a significant impact on the radiative and nonradiative processes. This study provides an in-depth understanding on the effect of the dianionic pincer ligands on the different photophysical behaviors among the gold(III) alkynyl complexes and crucial information for the future design of gold(III) complexes in various applications.
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