A tert-Butyldiphenylsilyl-Containing Polyimide-Based Chemosensor for Sequential Detection of Fluoride Ions and Trace Water in Organic Solvents.

ABSTRACT: A tert-butyldiphenylsilyl-containing polyimide (PI-OSi) has been established as a colorimetric and ratiometric chemosensor for rapid detecting fluoride ions (F^-). The UV-vis absorbance ratio value (A₃₂₂/A₂₈₈) of PI-OSi in a DMF solution displays a wide linear range change to F^- concentrations with a detection limit (DL) value of 2.13 μM. Additionally, adding incremental amounts of F^- to a DMF solution of PI-OSi shows an immediate color change to yellow and finally to green from colorless. More interestingly, the resulting PI-OSi plus F^- system (PI-OSi·F) could detect trace water in DMF. The A₂₉₂/A₃₂₂ value of PI-OSi·F almost linearly increases with low wa

SUBMITTER: Wu Y 

PROVIDER: S-EPMC10745802 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature