Zhang Ya-Qian, Blatov Vladislav A, Zheng Tian-Rui, Yang Chang-Hao, Qian Lin-Lu, Li Ke, Li Bao-Long, Wu Bing
State and Local Joint Engineering Laboratory for Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
Dalton Trans. 2018 May 1;47(17):6189-6198. doi: 10.1039/c7dt04682k.
A zinc(ii) coordination polymer {[Zn3(mtrb)3(btc)2]·3H2O}n (1) was synthesized and characterized (mtrb = 1,3-bis(1,2,4-triazole-4-ylmethyl)benzene, btc = 1,3,5-benzenetricarboxylate). The polymer 1 shows an unusual (3,4,4)-coordinated self-catenated 3D network with the point symbol of {63}2{62·82·102}{64·82}2. The polymer 1 is the first luminescent sensor for the detection of 2-amino-4-nitrophenol (ANP). The polymer 1 is also a good luminescence sensor for detection of TNP, 2,4-DNP, 4-NP, ANP and 2-NP in MeOH, particularly for TNP. The order of detection efficiency is TNP > 2,4-DNP > 4-NP > ANP > 2-NP. The polymer 1 also exhibits high sensitivity and selectivity as a luminescence sensor for the detection of Fe3+, Cr2O72- and CrO42- in aqueous solution. Our experiments showed that the presence of interfering ions had no significant effect on the sensing of Fe3+, Cr2O72- or CrO42- ions. The detection limits for TNP, ANP, Fe3+, Cr2O72- and CrO42- are 0.22 μM, 4.12 μM, 1.78 μM, 2.83 μM, and 4.52 μM, respectively. The luminescence sensor is stable and can be recycled for detection at least five times. The possible quenching mechanisms are discussed. The polymer 1 is also an effective photocatalyst for degradation of methylene blue (MB) under visible or UV light irradiation.
合成并表征了一种锌（II）配位聚合物{[Zn3(mtrb)3(btc)2]·3H2O}n（1）（mtrb = 1,3 - 双（1,2,4 - 三唑 - 4 - 基甲基）苯，btc = 1,3,5 - 苯三甲酸酯）。聚合物1呈现出一种不寻常的（3,4,4）配位的自连环三维网络，点符号为{63}2{62·82·102}{64·82}2。聚合物1是用于检测2 - 氨基 - 4 - 硝基苯酚（ANP）的首个发光传感器。聚合物1也是用于在甲醇中检测TNP、2,4 - DNP、4 - NP、ANP和2 - NP的良好发光传感器，特别是对于TNP。检测效率顺序为TNP > 2,4 - DNP > 4 - NP > ANP > 2 - NP。聚合物1作为用于检测水溶液中Fe3 +、Cr2O72 - 和CrO42 - 的发光传感器还表现出高灵敏度和选择性。我们的实验表明，干扰离子的存在对Fe3 +、Cr2O72 - 或CrO42 - 离子的传感没有显著影响。TNP、ANP、Fe3 +、Cr2O72 - 和CrO42 - 的检测限分别为0.22 μM、4.12 μM、1.78 μM、2.83 μM和4.52 μM。该发光传感器稳定且可至少循环使用五次进行检测。讨论了可能的猝灭机制。聚合物1也是在可见光或紫外光照射下用于降解亚甲基蓝（MB）的有效光催化剂。
