analytical methods;
azaborines;
cyanides;
fluorides;
main group elements;
sensors;
PI-ELECTRON SYSTEMS;
FLUORIDE-ION;
OPTICAL-PROPERTIES;
CHARGE-TRANSFER;
LEWIS ACIDITY;
CYANIDE;
FLUORESCENT;
COMPLEXATION;
RECOGNITION;
SENSORS;
D O I:
10.1002/chem.200802159
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
New cationic triarylboranes bearing ammonio or phosphonio groups on the periphery were synthesized from a common intermediate, a dibromodibenzoazaborine. These cationic molecules are soluble in highly polar organic solvents as well as water, and they exhibit strong light absorption and photoluminescence emission in water. Complexation of the cationic azaborines with fluoride and cyanide ions in aqueous media proceeded and could be monitored by NMR, UV/Vis, and fluorescence spectroscopy.