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Cyclometalated Ir(III) Complex as a Metalloligand and a Selective Cu(II) Sensor: Synthesis and Structural Characterization of a Heterometallic Tetranuclear Ir(III)/Cu(II) Complex
ACS Omega ( IF 3.7 ) Pub Date : 2018-03-08 00:00:00 , DOI: 10.1021/acsomega.8b00042
Vadapalli Chandrasekhar 1, 2 , Bani Mahanti 1 , Mrituanjay D Pandey 3 , R Suriya Narayanan 2
Affiliation  

A cyclometalated Ir(III) complex, [Ir(ppy)2(LH)] (2) [LH2 = 1,2-bis(pyridine-2-carboxamido)benzene; ppyH = 2-phenylpyridine] was synthesized and structurally characterized. [Ir(ppy)2(LH)] contains free donor sites and functions as a metalloligand. Accordingly, it interacts with a Cu(II) salt to afford the heterometallic tetranuclear complex, [{Ir(ppy)2(L)}2{Cu2Cl2}] (3). In the latter, a Cu2Cl2 dimer bridges the two cyclometalated Ir(III) units, resulting in a IrIII–CuII–CuII–IrIII motif. 2 also functions as a selective and reversible sensor for Cu2+, as revealed by quenching of its emission and subsequent revival of the luminescence signal upon addition of EDTA.

中文翻译:


环金属化 Ir(III) 络合物作为金属配体和选择性 Cu(II) 传感器:异金属四核 Ir(III)/Cu(II) 络合物的合成和结构表征



环金属化Ir(III)络合物,[Ir(ppy) 2 (LH)] ( 2 ) [LH 2 = 1,2-双(吡啶-2-甲酰胺基)苯; ppyH = 2-苯基吡啶]的合成和结构表征。 [Ir(ppy) 2 (LH)] 包含游离供体位点并充当金属配体。因此,它与 Cu(II) 盐相互作用,得到异金属四核配合物 [{Ir(ppy) 2 (L)} 2 {Cu 2 Cl 2 }] ( 3 )。在后者中,Cu 2 Cl 2二聚体桥接两个环金属化 Ir(III) 单元,形成 Ir III –Cu II –Cu II –Ir III基序。 2还充当 Cu 2+的选择性和可逆传感器,如通过添加 EDTA 后其发射猝灭和随后发光信号的恢复所揭示的。
更新日期:2018-03-08
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