Journal
LUMINESCENCE
Volume 36, Issue 4, Pages 951-957Publisher
WILEY
DOI: 10.1002/bio.4021
Keywords
copper (II) recognition; fluorescence probe; periodic mesoporous organosilicas; Schiff base
Categories
Funding
- China Postdoctoral Science Foundation [2019M662418]
- major scientific and technological innovation projects of Shandong Province [2018CXGC1406]
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SCN-PMO is a novel copper ion sensing periodic mesoporous organosilica with high selectivity and sensitivity, and a detection limit as low as 6.7 x 10(-7) M. It shows potential application as a nanoprobe in biological fields.
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 Cu2+ based on its specific fluorescence response. The detection limit of SCN-PMO could be as low as 6.7 x 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.
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