Two-photon-excited fluorescence of zinc(Ⅱ),cadmium(Ⅱ) complexes containing phenothiazine ligand  

作　　者：薛照明 田玉鹏 王东 易佑民 蒋民华 

机构地区：[1]Department of Chemistry, Anhui University, Hefei 230039, China [2]State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China [3]State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China [4]Department of Physics, Anhui University, Hefei 230039, China

出　　处：《Science China Chemistry》2003年第5期505-511,共7页中国科学（化学英文版）

基　　金：This work was supported by the State Key Program of China(Grant No.G1998061402); the National Natural Science Foundation of China(Grant Nos.50272001,29871001 and 20071001).

摘　　要：Two new ligands, S-benzyl-b-N-[10-ethylphenothiazine-3-methylene] dithiocarbazate (HL1), S-methyl-b-N-[10-ethylphenothiazine-3-methylene] dithiocarbazate (HL2), and their complexes 122222(ZnL, ZnL, CdL), which exhibit intensive two-photon excited (TPE) fluorescence at 800 nm laser pulses in the femtosecond regime, are synthesized and fully characterized. The measured power dependence of the fluorescence signals provides a direct evidence for TPE. All of them exhibit a large two-photon absorptive crosssection. The two-photon-excited fluorescence spectra of them are compared and contrasted with the corresponding results obtained from the one-photon excitation. Emission peaks of the ligands and their complexes are observed mostly at the region 550—595 nm in the TPE fluorescence spectra.Two new ligands, S-benzyl-b-N-[10-ethylphenothiazine-3-methylene] dithiocarbazate (HL1), S-methyl-b-N-[10-ethylphenothiazine-3-methylene] dithiocarbazate (HL2), and their complexes 122222(ZnL, ZnL, CdL), which exhibit intensive two-photon excited (TPE) fluorescence at 800 nm laser pulses in the femtosecond regime, are synthesized and fully characterized. The measured power dependence of the fluorescence signals provides a direct evidence for TPE. All of them exhibit a large two-photon absorptive crosssection. The two-photon-excited fluorescence spectra of them are compared and contrasted with the corresponding results obtained from the one-photon excitation. Emission peaks of the ligands and their complexes are observed mostly at the region 550—595 nm in the TPE fluorescence spectra.

关 键 词：two-photon-excited fluorescence  NLO property  metal complex  phenothiazine. 

分 类 号：O657.3[理学—分析化学]