Energy transfer-based ratiometric fluorescence sensing anthrax biomarkers in bimetallic lanthanide metal-organic frameworks

作者全名："Wu, Min; Jiang, Zhong Wei; Zhang, Pu; Gong, Xue; Wang, Yi"

作者地址："[Wu, Min; Jiang, Zhong Wei; Gong, Xue; Wang, Yi] Chongqing Normal Univ, Coll Chem, Chongqing Key Lab Green Synth & Applicat, Engn Res Ctr Biotechnol Act Subst,Minist Educ, Chongqing 401331, Peoples R China; [Zhang, Pu] Chongqing Med Univ, Coll Pharm, Chongqing Res Ctr Pharmaceut Engn, Chongqing 400016, Peoples R China"

通信作者："Jiang, ZW; Wang, Y (通讯作者)，Chongqing Normal Univ, Coll Chem, Chongqing Key Lab Green Synth & Applicat, Engn Res Ctr Biotechnol Act Subst,Minist Educ, Chongqing 401331, Peoples R China."

来源：SENSORS AND ACTUATORS B-CHEMICAL

ESI学科分类：CHEMISTRY

WOS号：WOS:000977572600001

JCR分区：Q1

影响因子：8

年份：2023

卷号：383

期号：　

开始页：　

结束页：　

文献类型：Article

关键词：Energy transfer; Ratiometric fluorescence sensing; Anthrax biomarkers; Wet grinding; Lanthanide metal-organic frameworks

摘要："A series of bimetallic lanthanide metal-organic frameworks (Ln-MOFs), namely Tbx/Eu1_x-BTC, were prepared by wet grinding with a green and facile process. The as-prepared Tbx/Eu1_x-BTC showed an adjustable dual emission performance for dipicolinic acid (DPA, Bacillus anthracis biomarker) ratiometric sensing. The highly efficient energy transfer from Tb3+ to Eu3+ endowed the strong red emission at 616 nm, even in Tbx/Eu1_x-BTC with high proportion of Tb3+. Meanwhile, the energy transfer between Tb3+ and Eu3+ nodes could be blocked by the introduced DPA, showing a strong green emission at 544 nm, and thus resulting in a ratiometric fluorescence response. As a novel ratiometric fluorescence probe, the Tb0.4/Eu0.6-BTC exhibited an excellent linearity with DPA concentrations from 50 nM to 3 mu M with high selectivity and low detection limit of 4.9 nM. The present work not only provided a green efficient method for the construction of bimetallic MOFs, but also proposed a new insight for designing fluorescence sensor with remarkable sensing performance."

基金机构：National Natural Science Foundation of China [22204011]; Chongqing Natural Science Foundation [CSTB2022NSCQ-MSX1064]; Science and Technology Research Project of Chongqing Education Commission [KJQN202200558]; Chongqing Innovation Research Group Project [CXQT21015]; Startup Fund of Chongqing Normal University [22XLB004]

基金资助正文："Acknowledgements This work was financially supported by National Natural Science Foundation of China (no. 22204011) , Chongqing Natural Science Foundation (no. CSTB2022NSCQ-MSX1064) , Science and Technology Research Project of Chongqing Education Commission (no. KJQN202200558) , the Chongqing Innovation Research Group Project (no. CXQT21015) , Startup Fund of Chongqing Normal University (no. 22XLB004) ."