Kaur Bhupinder, Gourkhede Rani, Balakrishna Maravanji S
Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
Inorg Chem. 2024 Sep 16;63(37):16981-16990. doi: 10.1021/acs.inorgchem.4c02586. Epub 2024 Sep 5.
Synthesis of a potentially polydentate, phosphine and pyridine embedded 1,2,3-triazole, -PhP(CH)C(CH)-1,2,3-N(CH)(Py) () (here onward referred to as "PNN") and its copper complexes are described. Reactions of with CuX yielded mononuclear [Cu{(PNN)-κ-}]X ( - ; X = I, CuBr and CuCl) and dinuclear [Cu{(PNN)-κ-}]X ( X = OTf, X = BF) complexes. Interestingly, the cationic complex [Cu{(PNN)-κ-}]I () in acetonitrile changes into neutral complex Cu(μ-I)(μ-I)(NCCH){(PNN)-κ(μ-)(μ-)}, which on addition of dichloromethane reverts back to the cationic form. The photoluminescent characteristics of cationic complexes are significantly impacted by the nature of counteranions and hence the corresponding photoluminescence quantum yields. Cationic complex showed an increase in quantum yield and lifetime on changing over to neutral complex . TD-DFT calculations also assisted in assessing the photophysical properties.
本文描述了一种潜在的多齿、嵌入膦和吡啶的1,2,3 - 三唑 -PhP(CH)C(CH)-1,2,3-N(CH)(Py) ()（以下简称“PNN”）及其铜配合物的合成。 与CuX反应生成单核[Cu{(PNN)-κ-}]X ( - ; X = I、CuBr和CuCl) 和双核[Cu{(PNN)-κ-}]X ( X = OTf、 X = BF) 配合物。有趣的是，乙腈中的阳离子配合物[Cu{(PNN)-κ-}]I () 转变为中性配合物Cu(μ-I)(μ-I)(NCCH){(PNN)-κ(μ-)(μ-)}，加入二氯甲烷后又恢复为阳离子形式。阳离子配合物的光致发光特性受到抗衡阴离子性质的显著影响，进而影响相应的光致发光量子产率。阳离子配合物 在转变为中性配合物 时量子产率和寿命增加。TD - DFT计算也有助于评估光物理性质。
