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
作者单位E-mail
徐涵 黄山学院化学化工学院, 无机功能材料重点实验室, 黄山 245041  
潘兆瑞 南京晓庄学院环境科学学院, 南京 211171 pzr_2006@163.com 
江蓉 黄山学院化学化工学院, 无机功能材料重点实验室, 黄山 245041  
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)(H2O)]·CH3OH}n1)、{[Zn(BIDPS)(p-bdc)]·H2O}n2)和[Mn(BIDPT)(NBA)]n3)(BIDPS=4,4'-二(1-咪唑基)苯砜,H2PA=帕莫酸,p-H2bdc=对苯二甲酸,BIDPT=4,4'-二(1-咪唑基)苯硫醚,H2NBA=4,4'-氮杂二基二苯甲酸)。单晶结构分析表明化合物12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12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Fe3+和Cr2O72-,并能抵抗多种竞争离子的干扰。同时研究了其对Fe3和Cr2O72-的荧光猝灭机理。
关键词: 配位聚合物  晶体结构  荧光  检测
基金项目: 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)和安徽省大学生创新创业项目(No.202110375020)资助
Abstract: Three new coordination polymers based on V-shaped ligands, namely {[Cd(BIDPS) (PA) (H2O)]·CH3OH}n (1), {[Zn(BIDPS) (p-bdc)]·H2O}n (2) and[Mn(BIDPT) (NBA)]n (3) (BIDPS=4, 4'-bis(imidazol-l-yl)-phenyl sulphone, H2PA=pamoic acid, p-H2bdc=p-phthalic acid, BIDPT=4, 4'-bis(imidazol-l-yl) diphenyl thioether, H2NBA=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 … π interaction. Compounds 1 and 2 showed excellent water stability and fluorescence, which were further con-firmed as bifunctional fluorescent sensors for Fe3+ and Cr2O72- with high selectivity, sensitivity, and anti-interference ability in the water. The mechanisms of fluorescence quenching were also studied in detail.
Keywords: coordination polymer  crystal structure  fluorescence  detection
投稿时间:2021-12-08 修订日期:2022-04-01
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徐涵,潘兆瑞,江蓉.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[J].无机化学学报,2022,38(6):1133-1145.
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