| Summary: | 碩士 === 國立彰化師範大學 === 化學系 === 99 === The goal of this research is to synthesize the boron-based derivatives and to investigate their potential for anion sensors. We successfully synthesize compound 4, 8 and 6 that all are naphthalene as the chromophore. Chemosensor 4 exhibits selective recognition towards CH3COO－、H2PO4－ and I－ ion among a series of tested anions in CH3CN solution. The association constant for 4* CH3COO－、4* H2PO4－ and 4* I－ in CH3CN solution were calculated to be 3.9×106 M-1、2.6×105 M-1 and 2.6×105 M-1, respectively. Chemosensor 4 formed complexes with the CH3COO－ 、H2PO4－ or I－ ion at a 1:1 ligand-to-anion ratio with a detection limit of 40 ppm CH3COO－、61 ppm H2PO4－ and 0.09 ppm I－, respectively.
Chemosensor 8 exhibits selective recognition towards I－ ion among a series of tested anions in CH2Cl2 solution. The association constant for 8* I－ in CH2Cl2 solution was calculated to be 6.6×105 M-1. Chemosensor 8 formed complexes with the I－ ion at a 1:1 ligand-to-anion ratio with a detection limit of 0.005 ppm I－.
Chemosensor 6 exhibits selective recognition towards I－ ion among a series of tested anions in THF/H2O (1：1, v/v) solution. The association constant for 6* I－ in THF/H2O (1：1, v/v) solution was calculated to be 5×104 M-1. Chemosensor 6 formed complexes with the I－ ion at a 1:1 ligand-to-anion ratio with a detection limit of 0.26 ppm I－.
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