Triphenylamine based fluorescent probe for the detection of water in organic solvents
A novel triphenylamine based fluorescent probe,TPAO,was synthesized through condensation reaction.The probe exhib-its a pronounced solvent-induced discolouration effect in organic solvents.The correlation between the solvent-induced color change of TPAO and polarity was determined using the empirical parameter ET(30)method.Based on the high sensitivity of TPAO to po-larity,water was detected in eight organic solvents with detection limits as low as 0.0015％(v/v,1,4-dioxane),0.0016％(v/v,tet-rahydrofuran),0.0066％(v/v,acetone),0.016％(v/v,DMF),0.043％(v/v,DMSO),0.0043％(v/v,acetonitrile),0.0040％(v/v,ethanol),0.014％(v/v,methanol).Moreover,TPAO was successfully employed for determining the alcohol contents in Chinese Baijius.
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