Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-01-01

Journal: RSC ADVANCES

Included Journals: Scopus、EI、SCIE

Volume: 4

Issue: 98

Page Number: 55179-55186

ISSN: 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.