Abstract

A novel 5,10,15-tris(5-bromo-2-thienyl),20(phenylcarboxy)porphyrin and its gallium derivative have been synthesized and fully characterized by various spectroscopic techniques and their respective photophysical and photochemical properties, such as the singlet oxygen quantum yield (Φ_Δ), fluorescence quantum yield (Φ_F) and triplet lifetime (τ_T) were determined. The complexes were conjugated to PEI_GQDs resulting is stable conjugates, owing to strong π–π stacking interaction between the PEI_GQDs and the porphyrins. PDT studies were carried out on these nanoconjugates and results obtained indicated they are suitable candidates for further in-depth PDT studies.

摘要

合成了一种新型的5,10,15-三(5-溴-2-噻吩基),20(苯基羧基)卟啉及其镓衍生物,并通过各种光谱技术及其各自的光物理和光化学性质,如单线态测定了氧量子产率 (Φ _Δ )、荧光量子产率 (Φ _F ) 和三重态寿命 (τ _T )。由于 PEI_GQDs 和卟啉之间的强 π-π 堆积相互作用，复合物与 PEI_GQDs 共轭，得到稳定的共轭物。对这些纳米缀合物进行了 PDT 研究，获得的结果表明它们是进一步深入 PDT 研究的合适候选者。