A fluoride selective dipyrromethane-TCNQ colorimetric sensor based on charge-transfer

作者：Kaur Paramjit^*; Kaur Sandeep; Singh Kamaljit

来源：Talanta, 2011, 84(3): 947-951.

DOI：10.1016/j.talanta.2011.02.034

• Charge-transfer
• TCNQ
• Colorimetric
• Fluoride
• Reflectance

A colorimetric sensor based on dipyrromethane(donor)-7,7',8,8'-tetracyanoquinodimethane (acceptor) charge-transfer compound depicts excellent selectivity for naked-eye as well as spectrophotometric determination of F- even in co-existence with other halide ions (Cl-, Br- and I-). The sensing mechanism is ascribed to the interrupted charge-transfer between donor-acceptor in the presence of F-. The sensing on solid support mimics the solution sensing process supported by the reflectance values. Thus this compound has potential for practical applications.

• 出版日期2011-5-15