Synthesis and photophysical properties of polyfluoroalkylyate silicon (IV) phthalocyanine

Jiao Wang; Wenling Xiao; Shijun Wu; Qiuhao Ye; Xiuqin Chen; Yiru Peng; Hongqin Yang

doi:10.1117/12.2548817

20 December 2019 Synthesis and photophysical properties of polyfluoroalkylyate silicon (IV) phthalocyanine

Jiao Wang, Wenling Xiao, Shijun Wu, Qiuhao Ye, Xiuqin Chen, Yiru Peng, Hongqin Yang

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112093A (2019) https://doi.org/10.1117/12.2548817
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

Phthalocyanine complexes are promising second-generation photosensitizers. It has many advantages in photodynamic therapy: good photothermal stability, absorption wavelength in the near-infrared region, and low cytotoxicity. However, they also have some disadvantages：easy to aggregate, poor in solubility, and lack tissue-target.Therefore, how to modify the structure of phthalocyanine is becoming a research hotspot. In this paper, a novel polyfluoroalkylyate silicon (IV) phthalocyanine (SiPc-F) was synthesized. The photophysical properties of this novel polyfluoroalkylyate silicon (IV) phthalocyanine complex (SiPc-F) were studied by UV-visible spectroscopy, steady state and time-resolved spectroscopic methods. The effect of the fluorine substituent on the photophysical properties of phthalocyanine complexes and the quantum yield of singlet oxygen was compared. The results show that the maximum absorption wavelength of polyfluoroalkylyate silicon (IV) phthalocyanine is red-shifted and the intensity is enhanced, the fluorescence intensity becomes stronger, fluorescence quantum yields and fluorescence lifetime is higher but singlet oxygen quantum yields was lower than that of non-fluorinated silicon (IV) phthalocyanine at the same concentration. Polyfluoroalkylyate silicon (IV) phthalocyanine complexes are excellent candidate photosensitizers for photodynamic therapy.

Citation Download Citation

Jiao Wang, Wenling Xiao, Shijun Wu, Qiuhao Ye, Xiuqin Chen, Yiru Peng, and Hongqin Yang "Synthesis and photophysical properties of polyfluoroalkylyate silicon (IV) phthalocyanine", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112093A (20 December 2019); https://doi.org/10.1117/12.2548817

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KEYWORDS

Luminescence

Absorption

Silicon

Oxygen

Photodynamic therapy

Quantum efficiency

Fluorine

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