Meso-四(4-(N-咔唑)丁烷氧苯基)卟啉稀土金属配合物的合成及光电性质

Synthesis and photoelectrical properties of meso-tetra{4-[(N-carbazyl) butyloxyphenyl]}porphyrin earth metal complexes

本文设计合成了未见文献报道的meso—N（4-（N-咔唑）丁烷氧苯基）卟啉（1）及其稀土金属配合物（Ln=Sm（2），Eu（3），Tb（4），Dy（5））．通过核磁共振氢谱、紫外．可见吸收光谱、元素分析和红外光谱对稀土金属卟啉配合物进行了表征，并研究了卟啉样品的荧光性质和表面光电压性质．结果表明，受无辐射跃迁等因素的影响，卟啉1～5的荧光强度和荧光量子效率依次减小．在无外加电场的情况下，稀土金属配合物2～5的表面光电压强度变化与荧光强度变化呈现相反的规律，充分表明荧光发射与表面光电压的相互竞争过程．不同性质的电场对金属卟啉配合物的电荷分离影响显著，在正电场和无外加电场情况下，配合物2～5的表面光电压信号强度依次增加．

A novel meso-tetra{4-[（N-carbazyl）butyloxyphenyl] }porphyrin and its different rare earth metal complexes （Ln = Sm（2）, Eu（3）, Tb（4）, Dy（5）） were prepared and characterized by 1H NMR spectra, UV-Vis spectra, elemental analysis and infrared spectra. The fluorescence and surface photovoltage were also studied. The results show that the fluorescence intensity and fluorescence quantum yield of porphyrin 1-5 decreased because of the radiationless transition. Contrary to the results of the fluorescence intensity of porphyrin complexes, there are high surface photovoltages of porphyrin 2-5 without external field. Competition process is presented between fluorescence intensity and surface photovoltage intensity. Surface photovoltage spectra of porphyrin complexes is influenced by the property of external electric field. Surface photovoltage intensity of porphyrin 2-5 increased under positive external field or without external field.