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Aggregation-Induced Emission Phosphorescence Featured Au–Ag Coordination Polymer with a Diphosphine N-Heterocyclic Carbene Ligand for Highly Sensitive Detection of Cr(VI)
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-07-23 , DOI: 10.1021/acs.inorgchem.4c01340 Sisi Yan 1 , Yuanyuan Hu 1 , Lin Cui 1 , Mengyao Feng 1 , David James Young 2 , Hong-Xi Li 1 , Xuewen He 1 , Chengrong Lu 1 , Zhi-Gang Ren 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-07-23 , DOI: 10.1021/acs.inorgchem.4c01340 Sisi Yan 1 , Yuanyuan Hu 1 , Lin Cui 1 , Mengyao Feng 1 , David James Young 2 , Hong-Xi Li 1 , Xuewen He 1 , Chengrong Lu 1 , Zhi-Gang Ren 1
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Luminescent materials with aggregation-induced emission (AIE) characteristics have been recognized as highly selective and sensitive probes for the detection of toxic metal ions in recent years. In this paper, a Au–Ag cluster-based coordination polymer [Au3Ag3(L)2(CN)6(H2O)2]n [1, L = 1,3-bis((diphenylphosphanyl)methyl)-4,5-dihydro-imidazolylidene] was prepared by in situ generation of the diphosphine N-heterocyclic carbene (PCNHCP)-type ligand L in the presence of the corresponding metal salts. Compound 1 exhibited 530 nm phosphorescence under 380 nm excitation with a QY of 6.30% and a lifetime (τ) of 7.14 μs in the solid state. 1 showed good AIE behavior in the mixture of MeOH/H2O while the best aggregation state (fwater = 90%, QY = 6.79%, τ = 6.70 μs) exhibited selective and sensitive emission quenching toward Cr(VI) ions. Ultralow detection limits of 9.7 ppb (w/w) for Cr2O72– and 17.9 ppb (w/w) for CrO42– were achieved.
中文翻译：
具有二膦 N-杂环卡宾配体的聚集诱导发射磷光特征的 Au-Ag 配位聚合物用于高灵敏检测 Cr(VI)
近年来，具有聚集诱导发射（AIE）特性的发光材料已被认为是检测有毒金属离子的高选择性和灵敏探针。本文提出了一种基于Au-Ag簇的配位聚合物[Au 3 Ag 3 ( L ) 2 (CN) 6 (H 2 O) 2 ] n [ 1 , L = 1,3-bis((diphenylphosphanyl)methyl) [-4,5-二氢咪唑亚基]通过在相应金属盐存在下原位生成二膦N-杂环卡宾(PC NHC P)型配体L来制备。化合物1在380 nm激发下表现出530 nm磷光，QY为6.30%，固态寿命（τ）为7.14 μs。图1在MeOH/H 2 O混合物中表现出良好的AIE行为，而最佳聚集状态（ f水= 90％，QY = 6.79％，τ = 6.70 μs）对Cr（VI）离子表现出选择性和灵敏的发射猝灭。 Cr 2 O 7 2–的超低检测限为 9.7 ppb (w/w)，CrO 4 2–的超低检测限为 17.9 ppb (w/w)。
更新日期：2024-07-23
中文翻译：
具有二膦 N-杂环卡宾配体的聚集诱导发射磷光特征的 Au-Ag 配位聚合物用于高灵敏检测 Cr(VI)
近年来，具有聚集诱导发射（AIE）特性的发光材料已被认为是检测有毒金属离子的高选择性和灵敏探针。本文提出了一种基于Au-Ag簇的配位聚合物[Au 3 Ag 3 ( L ) 2 (CN) 6 (H 2 O) 2 ] n [ 1 , L = 1,3-bis((diphenylphosphanyl)methyl) [-4,5-二氢咪唑亚基]通过在相应金属盐存在下原位生成二膦N-杂环卡宾(PC NHC P)型配体L来制备。化合物1在380 nm激发下表现出530 nm磷光，QY为6.30%，固态寿命（τ）为7.14 μs。图1在MeOH/H 2 O混合物中表现出良好的AIE行为，而最佳聚集状态（ f水= 90％，QY = 6.79％，τ = 6.70 μs）对Cr（VI）离子表现出选择性和灵敏的发射猝灭。 Cr 2 O 7 2–的超低检测限为 9.7 ppb (w/w)，CrO 4 2–的超低检测限为 17.9 ppb (w/w)。
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