A Highly Efficient Luminescent Metal-Organic Framework with Strong Conjugate Unit for Sensing Small Molecules  

作　　者：Bi-Lian Chai Hui Xu Teng-Fei Zheng Jing-Lin Chen Sui-Jun Liu Mei-Hui Yu He-Rui Wen 

机构地区：[1]School of Chemistry and Chemical Engineering,Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China [2]School of Materials Science and Engineering,TKL of Metal-and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Nankai University,Tianjin 300350,China

出　　处：《Chinese Journal of Chemistry》2022年第11期1305-1312,共8页中国化学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Nos.22061019,21761012,and 21861018);the Natural Science Foundation of Jiangxi Province(No.20202ACBL213001);Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry(No.20212BCD42018);the Natural Science Foundation of Tianjin(No.20JCQNJCO1680);the Youth Jinggang Scholars Program in Jiangxi Province(No.QNJG2019053);the Two Thousand Talents Program in Jiangxi Province(No.jxsq2019201068).

摘　　要：Luminescent metal-organic frameworks(LMOFs)have become a promising class of fluorescence sensing materials,however,the multi-responsive LMOF sensors for organic compounds are rather rare.Herein,a water stable and highly efficient luminescent MOF with the formula of{[Zn(BBZB)(2,6-NDC)]-solvents}n(JXUST-10,BBZB=4,7-bis(1H-benzimidazole-1-yl)-2,1,3-benzothiadiazole and 2,6-NDC=2,6-naphthalenedicarboxylate)was constructed by the incorporation of Zn2+and two organic ligands(BBZB and 2,6-NDC)featuring the conjugate system.JXUST-10 is a three-dimensional two-fold interpenetrated framework with good fluorescent proper-ty.Based on the luminescent characteristic,JXUST-10 can be used as a multi-responsive sensor for detection of three different ana-lytes including tetracycline,benzaldehyde and uric acid via different luminescent change behaviours.Remarkably,fluorescence test paper and LED light devices are used to detect analytes through the visual change of luminescence colour of JXUST-10 from blue greenish to yellow greenish under ultraviolet light(365 nm)irradiation.Furthermore,the probable sensing mechanisms for three target analytes were also discussed.

关 键 词：Metal-organic frameworks Sensors LUMINESCENCE Red-shift emission Turn-on effect 

分 类 号：O62[理学—有机化学]