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Germanium triazatetrabenzcorrole and germanium phthalocyanine: Synthesis, fluorescence and singlet oxygen generation

Institute of Applied Photochemistry, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei Province, 066004, China

MPC Technology, Hamilton, ON L8S 3H4, Canada

E-mail Address: zhangxianfu@tsinghua.org.cn

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and

Xiaojie Sun

Institute of Applied Photochemistry, Hebei Normal University of Science and Technology, Qinhuangdao, Hebei Province, 066004, China

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https://doi.org/10.1142/S1088424618500670Cited by:6 (Source: Crossref)

Abstract

The synthesis, fluorescence properties and singlet oxygen generation capability of germanium tetrabenzotriazacorrole (LGeTBC), germanium phthalocyanine (Cl $_{2}$ $_{2}$ GePc) and their derivatives are described. Measurements include UV-vis absorption spectra, fluorescence emission spectra, fluorescence quantum yields fluorescence lifetimes, and singlet delta oxygen quantum yields. LGeTBC and its derivatives exhibit quite different spectral and fluorescence properties from their phthalocyanine precursor. Both LGeTBC and Cl $_{2}$ $_{2}$ GePc show high singlet delta oxygen quantum yields and suitable fluorescence quantum yields, indicating that they can act as good singlet oxygen photosensitizers for photodynamic therapy.

Dedicated to Professor Naisheng Chen on the occasion of his 80th birthday

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