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Development of a Water‐Dispersible SBA‐15‐Benzothiazole‐Derived Fluorescence Nanosensor by Physisorption and Its Use in Organic‐Solvent‐Free Detection of Perborate and Hydrazine
Author(s) -
Gawas Ram U.,
Anand Shivesh,
Ghosh Barun K.,
Shivbhagwan Princee,
Choudhary Kushav,
Ghosh Narendra Nath,
Banerjee Mainak,
Chatterjee Amrita
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201802328
Subject(s) - chemistry , physisorption , nanosensor , hydrazine (antidepressant) , fluorescence , detection limit , inorganic chemistry , nuclear chemistry , organic chemistry , chromatography , nanotechnology , catalysis , materials science , physics , quantum mechanics
We have synthesized a water dispersible SBA‐15 based sensing material (nanosensor 1 ) for the detection of perborate ions and hydrazine in water. The nanosensor was prepared by simple physisorption of chemosensing unit 2‐(benzo[ d ]thiazol‐2‐yl)phenyl acetate ( 2 ) onto PEG‐stabilized SBA‐15. The probe molecule undergoes spontaneous cleavage of acetate group in the presence of both perborate ions and hydrazine to produce corresponding phenol ( 3 ), which results in greenish blue fluorescence by excited state intra‐molecular proton transfer (ESIPT) mechanism. The limit of detection (LOD) for both analytes was observed in ppb level; 49.9 ppb for perborate ions and 8.0 ppb for hydrazine. Simple synthesis, effortless modification, high water dispersibility make this nanosensor very efficient for perborate ions and hydrazine. Finally, this is a demonstration of the physisorption strategy in building useful sensing materials which can be applied to any analyte based on the choice of a suitable chemosenors.