Fashina Adedayo, Amuhaya Edith, Nyokong Tebello
Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa.
Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Apr 5;140:256-64. doi: 10.1016/j.saa.2014.12.070. Epub 2014 Dec 25.
This work reports on the synthesis, characterization and photophysical studies of newly derived phthalocyanine complexes and the phthalocyanine-silica nanoparticles conjugates. The derived phthalocyanine complexes have one terminal alkyne group. The derived phthalocyanine complexes showed improved photophysical properties (ФF, ФT, ΦΔ and τT) compared to the respective phthalocyanine complexes from which they were derived. The derived phthalocyanine complexes were conjugated to the surface of an azide functionalized silica nanoparticles via copper (1) catalyzed cyclo-addition reaction. All the conjugates showed lower triplet quantum yields ranging from 0.37 to 0.44 compared to the free phthalocyanine complexes. The triplet lifetimes ranged from 352 to 484 μs for the conjugates and from 341 to 366 μs for the free phthalocyanine complexes.
这项工作报道了新衍生的酞菁配合物以及酞菁-二氧化硅纳米颗粒共轭物的合成、表征和光物理研究。衍生的酞菁配合物具有一个末端炔基。与它们所衍生的相应酞菁配合物相比，衍生的酞菁配合物表现出改善的光物理性质（ФF、ФT、ΦΔ和τT）。通过铜（I）催化的环加成反应，将衍生的酞菁配合物与叠氮化物功能化的二氧化硅纳米颗粒表面共轭。与游离酞菁配合物相比，所有共轭物的三重态量子产率较低，范围为0.37至0.44。共轭物的三重态寿命范围为352至484μs，游离酞菁配合物的三重态寿命范围为341至366μs。
