文献类型：期刊文献

英文题名：A large Stokes shift, sequential, colorimetric fluorescent probe for sensing Cu2+/S2+ and its applications

作者：Li, Ji-Zhen[1,2];Leng, Tao-Hua[3];Wang, Zhi-Qiang[4,5];Zhou, Li[1,2];Gong, Xue-Qing[4,5];Shen, Yong-Jia[1,2];Wang, Cheng-Yun[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Inst Qual Inspect & Tech Res, Natl Food Qual Supervis & Inspect Ctr Shanghai, Shanghai 200233, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Ctr Computat Chem, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2019

卷号：373

起止页码：146

外文期刊名：JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

收录：;EI(收录号：20242616312450);WOS:【SCI-EXPANDED(收录号:WOS:000458225200017)】；

基金：The authors are grateful to financial support from the Natural Science Foundation of Shanghai (16ZR1408000), and the National Natural Science Foundation of China (No. 21576087).

语种：英文

外文关键词：Copper ions; Sulfide; Large Stokes shift; Colorimetric; Near-infrared; DFT calculations

摘要：Copper ions (Cu2+) and sulfide (S2-) are important markers in many physiologies and pathological processes. In this work, a new near-infrared fluorescent probe 1 for colorimetric and sequential detection of Cu2+/S2- was designed and developed. The probe showed a rapid (less than 1 min), highly selective and sensitive response toward copper ions. Notably, the probe could also be applied to detect S2- through reversible formation-separation of complex 1-Cu2+ and CuS with a large Stokes shift of 234 nm. The detection limit for Cu2+ and S2- was found to be 1.8 x 10(-8) M and 1.5 x 10(-8) M, respectively. Furthermore, the binding stoichiometry between 1 and Cu2+ was found to be 1:1, the binding mode was also demonstrated using density functional theory (DFT) calculations and contrastive compound research. In addition, the probe was successfully applied in real water samples assay for the detection of Cu2+, and the strip papers experiments also showed that probe 1 can be used to detect Cu2+ and S2-.