ABSTRACT Using a new kind of alkenyl silicon phthalocyanine, styrene (St) and methacrylic acid as monomers and potassium persulfate as an initiator, carboxylated silicon phthalocyanine photosensitive microspheres were synthesized by in-situ emulsion copolymerization. The structure and morphology of the microspheres were characterized by Fourier transform infrared spectroscopy (FT-IR)and scanning electron microscopy. Fluorescence spectrometer was used to characterize the optical property of the microspheres. The experimental results show that silicon phthalocyanine molecules with flexible unsaturated side chains have good compatibility with styrene. With the presence of carboxyl groups, the as-prepared photosensitive microspheres show high monodispersity and stability. On the basis of this, 9,10-diphenylanthracene (DPA) as singlet oxygen indicator was used to evaluate the photosensitivity of the microspheres. In addition, we report a novel phenomenon that the microspheres can be controllable etched by light irradiation with the presence of DPA in a specific solvent.

中文翻译：

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可控蚀刻合成羧化硅酞菁光敏微球

摘要 以新型烯基硅酞菁、苯乙烯(St)、甲基丙烯酸为单体，过硫酸钾为引发剂，原位乳液共聚法合成了羧化硅酞菁光敏微球。通过傅里叶变换红外光谱（FT-IR）和扫描电子显微镜对微球的结构和形貌进行了表征。荧光光谱仪用于表征微球的光学性质。实验结果表明，具有柔性不饱和侧链的硅酞菁分子与苯乙烯具有良好的相容性。由于羧基的存在，所制备的光敏微球表现出较高的单分散性和稳定性。在此基础上，9、10-二苯基蒽（DPA）作为单线态氧指示剂用于评估微球的光敏性。此外，我们报告了一种新现象，即在特定溶剂中存在 DPA 的情况下，微球可以通过光照射进行可控蚀刻。