7-羟基喹啉的双光子荧光光谱特性

Two-photon Fluorescence Spectral Characteristic of the Excited State Proton Transfer Molecular 7-hydroxyquinolioe

利用超快激光脉冲作为激发光源,研究了激发态质子转移有机分子7-羟基喹啉溶液的双光子吸收光谱特性。实验发现在波长为532nm的脉冲激光作用下,该溶液在波长约为380nm和550nm处出现了两个荧光峰,研究证明,峰波长为380nm处的荧光是7-羟基喹啉醇式结构下分子从激发态返回基态时发射的荧光,而峰波长为550nm处的荧光是该溶液的酮式结构分子从激发态返回基态时发射的荧光。

Using the ultrafast laser pulse as excitation light,the two-proton absorption spectral of the excited state proton transfer molecular 7-hydroxyquinoline are studied. It was found that the two fluorescence peak appeared in the wavelength of about 380nm and 550nm. It was proved that the peak wavelength of 380nm is emitted by the enol of 7-hydroxyquinoline molecules,and the peak wavelength for 550nm is emitted by the keto.