Synthesis of Latex Photocatalysts Loaded with Phthalocyanines and Their Applications

负载酞菁乳胶光催化剂的合成及其应用

• 批准号: 12640559
• 负责人: NAKASHIMA Kenichi
• 金额: $ 2.56万
• 依托单位: Saga University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12640559/
• 关键词: latex; phothalocyanine-aluminum complex; photocatalyst; envionmental pollutant; photodecompositon; singlet oxygen; フタロシアニンアルミニウム; 光反応機構; フタロシアニン銅; フタロシアニン

The purposes of this project are: (I) to synthesize novel latex catalysts loaded with phthalocyanines, (ii) to efficiently decompose environmental pollutants using the latex photocatlysts, and (iii) to elucidate the mechanisms of catalytic activities of the latex photocatalysts.During the term of the project, we Gave carried out the following experiments:(1) Synthesis of aluminum phothalocyanine complex: Based on San Roman's method (J. Photochem. Photobilol. B: Biol.1989, 3, 615), we synthesized hydroxyalminium tricarboxymonoamide phthalocyanine (AlTCPc), followed by characterization by elemental analysis, UV-Via and IR spectroscopy. Furthermore, fluorescence spectra were examined in detail since it is known that the ability of generating singlet oxygen of phthalocyanine derivatives is directly related to their fluorescence quantum yields.(2) Loading of AlTCPc on amino latex: We bound AlTCPc to the surface of polystyrene latex particles with amino groups by amidation reaction The mount of AlTCPc on the latex particles were determined by elemental analysis, ICP and IR spectroscopy.(3) Decomposition of eosin Y as a model compound of river pollutants: Eosin Y was decomposed by the latex photocatalyst in aqueous dispersions. Compared with a latex system without AlTCPc, photodegradeation of eosin Y was significantly enhanced. This fact demonstrates the usefulness of the latex-AlTCPc system as a photocatalyst. The photodegradation of eosin Y seems to be due to singlet oxygen generated by AlTCPc (Type II mechanism). To confirm this, we will determine the concentration of singlet oxygen and observe transient absorption spectra. Furthermore, we plan to decompose actual river pollutants such as endocrine disruptors.

本课题的主要目的是：（1）合成新型的负载酞菁的乳胶光催化剂，（2）利用乳胶光催化剂高效降解环境污染物，（3）阐明乳胶光催化剂的催化活性机理。光胆素B：1989，3，615），我们合成了羟基丙氨酸三羧基单酰胺酞菁（AlTCPc），随后通过元素分析、UV-Via和IR光谱进行表征。此外，荧光光谱进行了详细检查，因为它是已知的，产生单线态氧的酞菁衍生物的能力是直接关系到它们的荧光量子产率。(2)氨基胶乳负载AlTCPc：通过酰胺化反应将AlTCPc负载到聚苯乙烯胶乳粒子表面，并通过元素分析、ICP和IR光谱测定了AlTCPc在胶乳粒子表面的负载量。(3)以曙红Y为模型化合物的河流污染物的降解研究：在水分散体系中，利用胶乳型光催化剂对曙红Y进行降解。与不含AlTCPc的胶乳体系相比，曙红Y的光降解显著增强。这一事实证明了胶乳-AlTCPc体系作为光催化剂的有用性。曙红Y的光降解似乎是由于AlTCPc产生的单线态氧（II型机制）。为了证实这一点，我们将测定单线态氧的浓度并观察瞬态吸收光谱。此外，我们计划分解实际的河流污染物，如内分泌干扰物。

项目成果

Y-K.Gong, K.Nakashima: "Photoinduced Electron Transfer from Pyrenes to Alkylviologens on the Surface of Polystyrene Latex Particles : Effects of Polarities of the Donors and Charge Densities of the Particles"The Journal of Physical Chemistry B. 106巻. 803-

Y-K.Gong，K.Nakashima：“聚苯乙烯乳胶颗粒表面从芘到烷基碘的光致电子转移：供体极性和颗粒电荷密度的影响”物理化学杂志 B.卷 106. 803-

Y-K. Gong, K. Nakashima, and R. Xu: "A Novel Method to Determine Effective Charge of Polystyrene Latex Particles in Aqueous Dispersion"Langmuir. Vol.17, No.9. 2889-2892 (2001)

Y-K。

T. Watanabe, K. Nakashima, K. Tokunou, and N. Suzuki: "Singlet Oxygen as Sensitized by Methylene Blue in Polystyrene Latex Dispersions"ITE Letters. Vol.3 , No.1. 49-52 (2002)

T. Watanabe、K. Nakashima、K. Tokunou 和 N. Suzuki：“聚苯乙烯乳胶分散体中亚甲基蓝敏化的单线态氧”ITE Letters。

Y.Li, et al.: "Nano-Aggregate Formation of Poly(ethylen oxide)-b-Polymethacrylate Copolymer Induced by Alkaline Earth Metal Ion Binding"Langmuir. 18巻. 6727-6729 (2002)

Y.Li 等人：“碱土金属离子结合诱导的聚(环氧乙烷)-b-聚甲基丙烯酸酯共聚物的纳米聚集体形成”Langmuir，第 18 卷，6727-6729 (2002)。

Y-K.Gong, K.Nakashima: "Penetration of Pyrene and Its Derivatives into Polystyrene Latex Particles as Studied by Fluorescence Spectroscopy"Chemical Communications. 2001巻. 1772-1773 (2001)

Y-K.Gong，K.Nakashima：“通过荧光光谱研究芘及其衍生物对聚苯乙烯乳胶颗粒的渗透”，《化学通讯》，2001 年，第 1772-1773 卷。