吩噻嗪及其衍生物的TICT性质研究

STUDY ON THE TICT PROPERTY OF PHENOTHIAZINE AND ITS DERIVATIVES

测定了吩噻嗪（ＰＴＨ），Ｎ－吡啶吩噻嗪（ＰＹＺ），Ｎ－苯基吩噻嗪（ＰＨＺ）及模型化合物Ｎ，Ｎ－二甲基氨苯氰（ＤＭＡＢＮ］在苯溶液中的非辐射量子产率（Φｎｒ）。分别考察了ＰＨＺ，ＰＹＺ，ＰＴＨ及ＤＭＡＢＮ在不同溶剂中非辐射跃迁量子产率的变化行为。通过与具有典型ＴＩＣＴ性质的ＤＭＡＢＮ所得结果相比较，发现ＰＹＺ及ＤＭＡＢＮ的Φｎｒ与溶剂极性参数ＥＴ（３０）具有一定的依赖关系。结合稳态荧光和动态荧光的实验结果，证明ＰＹＺ类似ＤＭＡＢＮ具有ＴＩＣＴ性质，而ＰＨＺ及ＰＴＨ并非如此。

The radiationless quantum yields(Φ nr ) of phenothiazine (PTH).N phenyl phenothiazine (PHZ).N (2 pyridine) phenothiazine (PYZ) and model compound p N,N dimethylaminobenzonitrile (DMABN)in benzene were measured.The effects of solvents on Φ nr  of DMABN,PHZ,PYZ and PTH were investigated respectively.It was found that Φ nr  of PYZ and DMABN were dependent on the solvent polar parameter (E T (30) ).From the results of radiationless quantum yields and combining the state and dynamic fluorescence spectra,it is proved that PYZ as well as DMABN appears TICT property.