A Multistimuli-Responsive Photoluminescent Au(I) Complex with a PNN-Type Ligand
Yuanyuan Hu1, Jiangyue Wang1, David James Young2, Hong-Xi Li1, Yuxin Lu1（陆语欣）*, Zhi-Gang Ren1（任志刚）*
1College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, Jiangsu, People’s Republic of China
2James Watt School of Engineering, University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K.
Inorg. Chem. 2025, 64, 14882
Abstract: Reaction of AuCN with a PNN-type ligand dppmaphen (N-(diphenylphosphanylmethyl)-2-amino-1,10-phenanthroline) yielded a novel monoprotonated trinuclear Au(I) complex [Au3H(dppmaphen)2(CN)4] (1). Upon excitation at 368 nm, compound 1 emitted phosphorescence at 524 nm at room temperature and an additional phosphorescent band around 610 nm at lower temperatures and may function as a low-temperature thermometer. Compound 1 also exhibited reversible PL changes from green to yellow upon grinding and exposure to organic solvents, which is attributed to the destruction and rebuilding of voids in its crystal structure. Upon exposure to gaseous ammonia, up to 8 equiv of NH3 were adsorbed, leading to the switching-off of the PL, and accompanied by a change in crystalline phase.
Article information: https://doi.org/10.1021/acs.inorgchem.5c01405
