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论文类型：期刊论文

发表时间：2010-11-01

发表刊物：JOURNAL OF FLUORESCENCE

收录刊物：SCIE、EI、PubMed、Scopus

卷号：20

期号：6

页面范围：1255-1265

ISSN号：1053-0509

关键字：Boronic acid; Fluorescent chemosensors; DFT; PET

摘要：New ethynylated triphenylamine boronic acid sensors 1 and 2 were designed and the photophysical properties, as well as the binding with tartaric acid and mandelic acid were studied. We found the emission intensity of the sensors is sensitive to the polarity of the solvents and the emission of sensor 2 is sensitive to protic solvents. Theoretical calculations on the low-lying excited states of these sensors predicted d-PET effect. Experimental observations show either a-PET effect or no significant PET effect for the sensors. The sensitivity of the emission of the sensors toward solvent polarity is used to rationalize the observed emission intensity-pH profiles.