A new ligand, 4-dipropylaminobenzaldehyde thiosemicarbazone (HL) and its complexes (ZnL2, CdL2), which exhibit intense two-photon excited (TPE) dual fluorescence using 800 nm laser pulses in the femtosecond regime, were synthesized and fully characterized. The measured power dependence of the fluorescence signals provides direct evidence for TPE. The two-photon excited dual fluorescence spectra were compared and contrasted with the corresponding results obtained from one-photon excitation. Emission peaks of the ligand and its complexes were assigned with the aid of PM3 calculations.
合成了一种新
配体 4-二丙
氨基
苯甲醛缩
氨基
硫脲 (HL) 及其配合物 (Zn
L2、Cd
L2),在飞秒范围内使用 800 nm 激光脉冲表现出强烈的双光子激发 (TPE) 双荧光,并进行了充分表征。测量到的荧光信号的功率依赖性为 TPE 提供了直接证据。将双光子激发的双荧光光谱与单光子激发获得的相应结果进行比较和对比。借助 PM3 计算来指定
配体及其配合物的发射峰。