Highly selective fluorescence detection of Cu2+ based on Schiff base functionalized periodic mesoporous organosilicas. (25th February 2021)

• Record Type: Journal Article
• Authors: Gao, Meng; Xing, Chenchen; Jiang, Xiaoping; Xu, Lijie; Li, Peihai; Hsiao, Chung‐Der
• Is Part Of: Luminescence. Volume 36:Number 4(2021)
• Page Start: 951
• Page End: 957
• Publication Date: 2021-02-25
• Subjects: copper (II) recognition -- fluorescence probe -- periodic mesoporous organosilicas -- Schiff base; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.4021
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: A novel copper ion sensing periodic mesoporous organosilica (SCN‐PMO) was obtained by incorporating a Schiff base‐based fluorescent receptor into the pore walls of mesoporous silica, which exhibited a well ordered mesoporous structure and excellent optical properties demonstrated by various characterization results. SCN‐PMO possessed high selectivity and sensitivity towards Cu 2+ based on its specific fluorescence response. The detection limit of SCN‐PMO could be as low as 6.7 × 10 −7 M. Due to protection of the silica network, SCN chromophores in PMOs exhibited higher photostability and the resulting material possessed great repeatability. Additionally, the fluorescence changes of SCN‐PMO towards copper ions in vivo (zebrafish) showed that SCN‐PMO has potential application as a nanoprobe in biological fields. Abstract : A high selectivity and sensitivity copper(II)‐recognition fluorescence sensor was prepared by covalent incorporated of the Schiff base‐based receptor SCN within the pore walls of PMOs. The SCN‐PMO sensor exhibited high optical stability and good recyclability, which was promising candidates in chemosensors, biosensor and environmental monitoring applications.