The fluorescence sensor for saccharide based on internal conversion.
In this paper, an internal conversion (IC) fluorescence probe N-(o-boronic acid)benzyl-1-naphthylamine (BBNA) was prepared from 1-naphthylamine and 2-formylbenzeneboronic acid. The fluorescence parameters of BBNA were investigated in a variety of solvents. When BBNA interacted with D-fructose in phosphate buffer solution of 30% MeOH, pH 8.21 (v/v), the fluorescence intensity increased and emission maximum red-shifted slightly with increasing D-fructose concentration. In the presence of D-fructose, the fluorescence quantum yield of BBNA increased with increasing solvent polarity, suggesting that internal conversion (IC) occurred with BBNA. The binding force of BBNA with d-fructose was the strongest, and the stability constant (K) of D-fructose was 99.9 mol/L. Therefore, a selective recognition system based on IC was constructed for D-fructose.
Sun
Xiang-Ying
XY
Department of Environmental Science and Engineering, Huaqiao University, Quanzhou 362021, People's Republic of China. liumy@hqu.edu.cn
Liu
Bin
B
D015057:1-Naphthylamine / Q000031:analogs & derivatives / Q000032:analysis / Q000737:chemistry; D001897:Boronic Acids / Q000032:analysis / Q000737:chemistry; D005456:Fluorescent Dyes / Q000032:analysis* / Q000737:chemistry*; D005632:Fructose / Q000737:chemistry / Q000494:pharmacology; D005936:Glucans / Q000032:analysis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D010777:Photochemistry; D013050:Spectrometry, Fluorescence
D001897:Boronic Acids; D005456:Fluorescent Dyes; D005936:Glucans; C506447:N-(o-boronic acid)benzyl-1-naphthylamine; D005632:Fructose; D015057:1-Naphthylamine