Two new emissive mononuclear copper（Ⅰ） triphenylphosphine complexes with functionalized 6-tert- butoxycarbonyl-2,2＇-bipyridiue chelating ligands were prepared and characterized. Each Cu（Ⅰ） cation has a markedly...Two new emissive mononuclear copper（Ⅰ） triphenylphosphine complexes with functionalized 6-tert- butoxycarbonyl-2,2＇-bipyridiue chelating ligands were prepared and characterized. Each Cu（Ⅰ） cation has a markedly distorted P2N2 tetrahedral array with two different Cu--N bond distances, due to the addition of the bulky tert-butoxycarbonyl group at the 6-position of the 2,2＇-bipyridyl ring. A weak low-energy broad absorption band appears at 330-500 nm in their CH2Cl2 solutions, which is influenced by the methylation of the 2,2＇-bipyridyl ring. At room temperature, the photoluminescence can be clearly observed both in degassed CH2Cl2 solution and in the solid state, because of the introduction of the bulky tert-butoxycarbonyl substituent, and the emission properties are remarkably affected by both the methylation and the alkoxycarbonyl variation of the 2,2＇-bipyridyl ring. It is shown that the introduction of the bulky tert-butoxyearbonyl group is favorable for improving the emission properties of the 6-alkoxycarbonyl-2,2＇-bipyridine-based cuprous complexes.展开更多
基金Supported by the National Natural Science Foundation of China（Nos.21561013, 21501077）, the Major Program of Jiangxi Provincial Natural Science Foundation for Young Scholar, China（Nos.20143ACB21017, 20161ACB21013）, the Natural Science Foundation of Jiangxi Province, China（Nos.20171BAB203005, 20171BCB23066, 20151BAB213003） and the Program for Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology, China.
文摘Two new emissive mononuclear copper（Ⅰ） triphenylphosphine complexes with functionalized 6-tert- butoxycarbonyl-2,2＇-bipyridiue chelating ligands were prepared and characterized. Each Cu（Ⅰ） cation has a markedly distorted P2N2 tetrahedral array with two different Cu--N bond distances, due to the addition of the bulky tert-butoxycarbonyl group at the 6-position of the 2,2＇-bipyridyl ring. A weak low-energy broad absorption band appears at 330-500 nm in their CH2Cl2 solutions, which is influenced by the methylation of the 2,2＇-bipyridyl ring. At room temperature, the photoluminescence can be clearly observed both in degassed CH2Cl2 solution and in the solid state, because of the introduction of the bulky tert-butoxycarbonyl substituent, and the emission properties are remarkably affected by both the methylation and the alkoxycarbonyl variation of the 2,2＇-bipyridyl ring. It is shown that the introduction of the bulky tert-butoxyearbonyl group is favorable for improving the emission properties of the 6-alkoxycarbonyl-2,2＇-bipyridine-based cuprous complexes.
