A copper-based metal-organic framework for ratiometric detection of hydrogen sulfide with high sensitivity and fast response

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 243; p. 118794
• Main Authors: Zhao, Xiaoli, Zhang, Lijiao, Bai, Jianguo, Wu, Pengyan, Li, Yang, Liang, Lili, Xie, Liheng, Wang, Jian
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.12.2020
• Subjects: Fast response; Hydrogen sulfide; Luminescent sensor; Metal-organic frameworks; Ratiometric; Hydrogen sulfide; Luminescent sensor; Metal-organic frameworks; Fast response; Ratiometric
• ISSN: 1386-1425
• DOI: 10.1016/j.saa.2020.118794

Metal-organic framework (MOF) is a class of crystalline porous solid materials which could be designed as sensors for bioactive molecules. In this study, charge transition between the ligand and the metal ions related emission and the ligand-based emission were formed simultaneously within a novel luminescent MOF with the copper reactive site as nodes. It can serve as a rare example of MOFs implicated ratiometric sensor for selective luminescent detection of H2S. The luminescent detection limitations for H2S is 0.21 μM, and it possesses a fast response of 30 s. The sensing mechanism is also discussed. A novel luminescent MOF with dual-emission signals can serve as a rare example of MOFs-based ratiometric sensor for detecting H2S with the detection limitation of 0.21 μM. [Display omitted] •A novel dual-emission MOF with a 1D pore system has been reported.•This MOF shows a rare example of MOFs implicated ratiometric sensing of H2S.•The detection limit is very low, and the mechanism is fairly clear.