Wang Rong-Yan, Zhang Xiao, Yu Jie-Hui, Xu Ji-Qing
College of Chemistry, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University Changchun Jilin 130012 China
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin China 150080
RSC Adv. 2018 Oct 23;8(63):36150-36160. doi: 10.1039/c8ra05760e. eCollection 2018 Oct 22.
In this article, three bisimidazole derivatives (1,4-bis(2-ethylimidazol-1-yl)butane, L1; 4,4'-di(1-imidazol-1-yl)-1,1'-biphenyl, L2'; and 1,3-bis(2-ethylimidazol-1-yl)propane, L3) were employed to solvothermally react with AgI in an acidic environment, creating three new 1-D chained iodoargentates [H(L1)][AgI]·DMF (DMF = ,'-dimethylformamide) 1, [L2][AgI] (L2 = 4,4'-di(1-imidazol-1-ium)-1,1'-biphenyl) 2, and [H(L3)][AgI] 3. L2 in 2 originated from the N-alkylation of L2' with the CHOH solvent. X-ray single-crystal diffraction analysis reveals that (i) in 1, Ag and I aggregate to form a 1-D tube-like iodoargentate, which exhibits the same topology as the carbon tube; (ii) the chain structure of the iodoargentate in 2 is based on a kind of trinuclear Ag-I cluster, which can be viewed as a segment of the classical cubic MI cluster; (iii) the chain structure of the iodoargentate in 3 is simple, which can be described as a linear arrangement of the AgI tetrahedra by sharing edges. The photoluminescence analysis reveals that at 77 K, (i) 1 and 2 emit strong yellow light with ms-grade photoluminescence lifetimes (5.460 ms for 1, 6.931 ms for 2); (ii) 3 possesses photochromic luminescence properties. Upon excitation at 254 nm, it emits blue-green light, whereas upon excitation at 365 nm, it emits yellow light.
在本文中，三种双咪唑衍生物（1,4-双（2-乙基咪唑-1-基）丁烷，L1；4,4'-二（1-咪唑-1-基）-1,1'-联苯，L2'；以及1,3-双（2-乙基咪唑-1-基）丙烷，L3）用于在酸性环境中与AgI进行溶剂热反应，生成三种新的一维链状碘银酸盐[H(L1)][AgI]·DMF（DMF = N,N'-二甲基甲酰胺）1、[L2][AgI]（L2 = 4,4'-二（1-咪唑-1-鎓）-1,1'-联苯）2和[H(L3)][AgI] 3。2中的L2源自L2'与CHOH溶剂的N-烷基化反应。X射线单晶衍射分析表明：（i）在1中，Ag和I聚集形成一维管状碘银酸盐，其拓扑结构与碳管相同；（ii）2中碘银酸盐的链结构基于一种三核Ag-I簇，可视为经典立方MI簇的一部分；（iii）3中碘银酸盐的链结构简单，可描述为通过共享边的AgI四面体的线性排列。光致发光分析表明，在77 K时：（i）1和2发出强黄色光，光致发光寿命为毫秒级（1为5.460 ms，2为6.931 ms）；（ii）3具有光致变色发光特性。在254 nm激发时，它发出蓝绿色光，而在365 nm激发时，它发出黄色光。
