以4,4′⁃二(1⁃咪唑基)苯砜或4,4′⁃二(1⁃咪唑基)苯硫醚为配体的配位聚合物的合成、晶体结构及性质  

Syntheses,Crystal Structures and Properties of Coordination Polymers Based on 4,4′⁃Bis(imidazol⁃l⁃yl)⁃phenyl Sulphone or 4,4′⁃Bis(imidazol⁃l⁃yl)diphenyl Thioether

作　　者：徐涵 潘兆瑞 江蓉 XU Han;PAN Zhao-Rui;JIANG Rong(School of Chemistry and Chemical Engineering,Key Laboratory of Inorganic Functional Materials,Huangshan University,Huangshan,Anhui 245041,China;School of Environmental Science,Nanjing Xiaozhuang University,Nanjing 211171,China)

机构地区：[1]黄山学院化学化工学院,无机功能材料重点实验室,黄山245041 [2]南京晓庄学院环境科学学院,南京211171

出　　处：《无机化学学报》2022年第6期1133-1145,共13页Chinese Journal of Inorganic Chemistry

基　　金：安徽省高校优秀人才支持计划重点项目(No.gxyqZD2020042);安徽高校省级自然科学研究资金(No.KJHS2019B03);安徽省大学生创新创业项目(No.202110375020)资助。

摘　　要：通过水热法合成并表征了3个基于V型配体构筑的新颖配位聚合物{[Cd(BIDPS)(PA)(H_(2)O)]·CH_(3)OH}_(n)(1)、{[Zn(BIDPS)(pbdc)]·H_(2)O}_(n)(2)和[Mn(BIDPT)(NBA)]_(n)(3)(BIDPS=4,4′-二(1-咪唑基)苯砜,H_(2)PA=帕莫酸,p-H_(2)bdc=对苯二甲酸,BIDPT=4,4′-二(1-咪唑基)苯硫醚,H_(2)NBA=4,4′-氮杂二基二苯甲酸)。单晶结构分析表明化合物1和2具有二维网络结构,化合物1进一步通过倾斜穿插形成三维结构,化合物2通过分子间氢键形成了三维网络结构。化合物3属于3-连接六边形的蜂窝状结构,通过C—H…π作用形成三维超分子结构。化合物1和2在水中具有很好的稳定性和荧光性质,可作为高灵敏度、高选择性荧光探针检测水溶液中的Fe^(3+)和Cr_(2)O_(7)^(2-),并能抵抗多种竞争离子的干扰。同时研究了其对Fe^(3)和Cr_(2)O_(7)^(2-)的荧光猝灭机理。Three new coordination polymers based on V-shaped ligands,namely{[Cd(BIDPS)(PA)(H_(2)O)]·CH_(3)OH}_(n)(1),{[Zn(BIDPS)(p-bdc)]·H_(2)O}_(n)(2)and[Mn(BIDPT)(NBA)]_(n)(3)(BIDPS=4,4′-bis(imidazol-l-yl)-phenyl sulphone,H_(2)PA=pamoic acid,p-H_(2)bdc=p-phthalic acid,BIDPT=4,4′-bis(imidazol-l-yl)diphenyl thioether,H_(2)NBA=4,4′-azanediyl dibenzoic acid)have been hydrothermally synthesized and structurally characterized.Compounds 1 and 2 feature an undulate 2D layer structure.Compound 1 exhibits a rare 2D→3D inclined polycatenated structure,while compound 2 is further joined by intermolecular hydrogen bondings to form a 3D network.Compound 3 displays a 3-connected hexagonal layer hcb topology(honeycomb network)and is further assembled into a 3D network via C—H…πinteraction.Compounds 1 and 2 showed excellent water stability and fluorescence,which were further confirmed as bifunctional fluorescent sensors for Fe^(3+)and Cr_(2)O_(7)^(2-)with high selectivity,sensitivity,and anti-interference ability in the water.The mechanisms of fluorescence quenching were also studied in detail.CCDC:1919698,1;2085947,2;2117923,3.

关 键 词：配位聚合物 晶体结构 荧光 检测 

分 类 号：O614.241[理学—无机化学] O614.242[理学—化学]