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Indexed by:期刊论文

Date of Publication:2014-01-01

Journal:RSC ADVANCES

Included Journals:SCIE、EI、Scopus

Volume:4

Issue:98

Page Number:55179-55186

ISSN No.:2046-2069

Abstract:Triarylborane-containing polyacetylene derivatives (2a-c) were synthesized by the polymerization of the corresponding monomers with Rh+(nbd)[C6H5B-(C6H5)(3)] catalyst. The anion sensing ability of 2a-c was examined by using tetra-n-butylammonium salts of a series of halide ions. UV-vis absorption and emission measurements revealed that these polymers could selectively detect F-, while they did not show any response for Cl-, Br-, and I-. The fluoride sensing properties of these polymers are highly dependent on the structure of the spacers between the conjugated main chain and boron atoms. Namely, 2a containing fluorenyl moieties exhibited a "turn on" fluorescence F- sensing ability. 2b having phenyl spacers displayed emission quenching upon addition of F- in solution, and a signal amplification phenomenon was observed compared to the corresponding monomer. Addition of F- changed the color of the biphenyl group-containing 2c in THF from yellow to orange, indicating that 2c can be used as a colorimetric sensor.