Imine-Linked Covalent Organic Framework with a Naphthalene Moiety as a Sensitive Phosphate Ion Sensing
Entidad
UAM. Departamento de Química InorgánicaFecha de edición
2021-05-03Cita
10.1021/acsami.1c24555
ACS Applied Materials & Interfaces 14 (2022): 22398–22406
ISSN
1944-8244 (print); 1944-8252 (online)DOI
10.1021/acsami.1c24555Financiado por
The authors gratefully acknowledge the Research Affairs Division of the Isfahan University of Technology (IUT), Isfahan, for partial financial support. F.Z. thanks financial support from Ministerio de Ciencia e Innovacion (project PID2019-106268GB-C32)Versión del editor
https://doi.org/10.1021/acsami.1c24555Materias
Covalent organic framework; DFT calculation; Ion sensing; Phosphate ion; Photoluminescence; QuímicaDerechos
© 2022 American Chemical SocietyResumen
Due to the excellent ion-sensing potential of covalent organic frameworks (COFs), the new imine-linked conjugated COF (IC-COF) is synthesized through a water-based synthesis reaction between 1,5-diaminonaphthalene and 2,4,6-tris(4-formylphenoxy)-1,3,5-triazine to create a luminescence sensor. It is noteworthy that the green synthesized IC-COF shows excellent selectivity to phosphate ions (PO43-) with a detection limit of 0.61 μM. The recyclability performance of IC-COF is high, indicating that it can be reused without a significant reduction in performance (5.2% decline after 5 cycles). Theoretical calculations using the density functional theory are performed on the IC-COF-PO43- and IC-COF-Cu+ complexes to explore the sensing mechanism. The fluorescence quenching in the presence of PO43- ions is attributed to the difference between PO43- binding sites to the IC-COF compared to Cu+, which leads to the considerable change in the IC-COF absorption spectrum from 400 to 600 nm.
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Google Scholar:Afshari, Mohaddeseh
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Dinari, Mohammad
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Farrokhpour, Hossein
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Zamora Abanades, Félix Juan
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