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合成了吩噻嗪(PTZ)-corrole二元体1-3及其镓(III)配合物4-6.采用稳态吸收与稳态发射及时间分辨的瞬态光谱技术研究了这几种化合物的光物理特性.结合荧光量子产率和荧光寿命计算得到它们的辐射和无辐射速率常数.稳态吸收光谱表明:几种二元体中,corrole镓(III)单元表现出更强的Soret带和Q带.化合物1-3的荧光量子产率分别是0.156、0.134和0.139,辐射速率常数分别为4.02′107、3.47′107和2.89′107s-1.化合物4-6的荧光量子产率分别是0.502、0.443和0.494,辐射速率常数分别为20.90′107、16.78′107和21.11′107s-1.可见,化合物4-6的荧光量子产率和辐射速率常数均高于化合物1-3.然而,化合物4-6的荧光寿命分别是2.40、2.64和2.34ns,低于自由corrole1-3.琼脂糖凝胶电泳实验表明:在光照的条件下,这些吩噻嗪-corrole镓(III)二元体化合物能够把超螺旋DNA(formI)切割成缺刻型DNA(formII).
Synthesis of the phenothiazine (PTZ) -corrole binary 1-3 and its gallium (III) complexes 4-6 using steady-state absorption and steady-state emission and time-resolved transient spectroscopy of these compounds . The steady-state absorption spectra show that corrole gallium (III) units show stronger Soret bands in several binary bodies And Q. The fluorescence quantum yields of compound 1-3 were 0.156,0.134 and 0.139 respectively, and the radiation rate constants were 4.02’107,3.47’107 and 2.89’107s-1, respectively.The fluorescence quantum yields of compounds 4-6 were Are 0.502, 0.443 and 0.494, respectively, and the radiation rate constants are 20.90’107, 16.78’107 and 21.11’107s-1, respectively. It can be seen that both the fluorescence quantum yield and the radiation rate constant of the compounds 4-6 are higher than those of the compounds 1-3. , The fluorescence lifetime of compounds 4-6 were 2.40,2.64 and 2.34ns, respectively, which were lower than that of free corrole1-3. The agarose gel electrophoresis experiments showed that under light conditions, these phenothiazine-corrole gallium (III) The bulk compounds are capable of cleaving super form Ⅰ into form II.