Abstract

The possibility of stabilization of zinc(II) 2,3,9,10,16,17,23,24-octa[(3,5-sodium biscarboxylate)phenoxy] phthalocyaninate (ZnPc₁₆) by its hybridization with the surface of graphene oxide (GO) sheets via van der Waals or coordination bonds with functional groups of the carbon matrix in the GO hydrosols has been investigated. A combination of physicochemical analysis methods (scanning electron microscopy, fluorescence microscopy, powder X-ray diffraction, and Raman spectroscopy) has been employed to confirm the integration of ZnPc₁₆ with GO nanosheets and to study the morphology and structure of the obtained hybrid materials. Using electronic absorption spectroscopy, it has been found that, regardless of the hybridization method, the binding of the macrocycles to the inorganic particles increases the stability of ZnPc₁₆ in an aqueous medium being irradiated with visible light. The analysis of spectral kinetic data has shown that, in contrast to the system obtained by direct integration of ZnPc₁₆ and GO, the hybrid material formed by coordination bonding of the components via zinc acetate (Zn(OAc)₂) as a binding metal cluster is able to exhibit photocatalytic properties in oxidative photodegradation of some model organic pollutant substrates (rhodamine 6G, 1,5-dihydroxynaphthalene, and 1,4-nitrophenol). The proposed colloid-chemical approach to the stabilization of photoactive water-soluble phthalocyaninates makes it possible to increase their resistance to photoinduced self-oxidation and can be adapted for various derivatives of tetrapyrrole compounds possessing photosensitizing properties.

中文翻译：

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氧化石墨烯水溶胶中水溶性酞菁锌的非共价稳定

摘要

通过与石墨烯表面杂化稳定锌(II) 2,3,9,10,16,17,23,24-八[(3,5-双羧酸钠)苯氧基]酞菁酸锌(ZnPc ₁₆ )的可能性已经研究了通过范德华力或与 GO 水溶胶中碳基体官能团的配位键形成氧化物（GO）片。采用物理化学分析方法（扫描电子显微镜、荧光显微镜、粉末X射线衍射和拉曼光谱）相结合来确认ZnPc ₁₆与GO纳米片的整合，并研究所获得的杂化材料的形貌和结构。使用电子吸收光谱法，已经发现，无论杂交方法如何，大环化合物与无机颗粒的结合增加了ZnPc ₁₆在用可见光照射的水性介质中的稳定性。光谱动力学数据分析表明，与ZnPc _{16和GO直接集成获得的体系相比，通过醋酸锌（Zn(OAc) 2}）作为结合金属簇配位键合形成的杂化材料能够在一些模型有机污染物底物（罗丹明 6G、1,5-二羟基萘和 1,4-硝基苯酚）的氧化光降解中表现出光催化性能。所提出的胶体化学方法用于稳定光敏水溶性酞菁酸酯，可以提高其对光诱导自氧化的抵抗力，并且可以适用于具有光敏特性的四吡咯化合物的各种衍生物。