Journal
NEW JOURNAL OF CHEMISTRY
Volume 46, Issue 15, Pages 7055-7069Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj00241h
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Funding
- University Grant Commission (UGC), New Delhi
- Council of Scientific and Industrial Research (CSIR), India
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This study demonstrates the design and facile synthesis of 1-adamantanamine-based organosilanes using a click silylation approach. These synthesized organosilanes exhibit preferential selectivity towards Sn2+ ions and can serve as colorimetric/fluorimetric dual-channel probes. The chemosensor 4a shows promising results in the recovery testing of Sn2+ in real soil samples.
The current investigation illustrates the design and facile synthesis of the 1-adamantanamine-based organosilanes 4a-dvia a click silylation approach, and they were characterized well via NMR (H-1 and C-13) and mass spectroscopic techniques. All the synthesized organosilanes possessed preferential selectivity towards Sn2+ ions in the presence of other relevant ions and served as colorimetric/fluorimetric dual-channel probes. The probes have been successfully employed as naked-eye sensors with a visible color change in daylight from transparent white to golden yellow upon binding with Sn2+ ions. The enhancement in fluorescence is attributed to the inhibition of the PET process upon interaction with Sn2+ ions. Furthermore, BH plots reveal the presence of strong binding with 1 : 1 stoichiometry in the physiological pH range. Moreover, the limits of detection when using 4a-d towards Sn2+ found in this study are far lower than the WHO guidelines for drinking water. Interestingly, the chemosensor 4a has been successfully employed for performing recovery testing of Sn2+ in real soil samples. Owing to these enticing features, this present protocol could enormously expedite the design and development of chemosensors for the detection of Sn2+ ions.
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