Creation of Nano-Molecular Assemblies Using Intermolecular Interactions and its Photofunction

利用分子间相互作用及其光功能创建纳米分子组装体

• 批准号: 16310073
• 负责人: IMAHORI Hiroshi
• 金额: $ 9.6万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16310073/
• 关键词: Porphyrin; Fullerene; Dendrimer; Nanoparticle; Cluster; Solar cell; Host-guest interaction; Hydrogen bonding; ポリフィリン; 電子移動; 自己組織化; バルクヘテロ接合; 微粒子

Novel organic solar cells have been prepared using quaternary self-organization of porphyrin (donor) and fullerene (acceptor) units by clusterization with gold nanoparticles on nanostructured SnO_2 electrodes. First, porphyrin-alkanethiolate monolayer-protected gold nanoparticles (H_2PC nMPP : nis the number of methylene groups in the spacer) are prepared (1st step) starting from the primary component (porphyrin-alkanethiol). These porphyrin-modified gold nanoparticles form complexes with fullerene molecules (2nd step), and they are clusterized in acetonitrile/toluene mixed solvent (3^<rd> step). The highly colored composite clusters can then be assembled as threedimensional arrays onto nanostructured SnO_2 films to afford the ITO/SnO_2/(H_2PC nMPP+C_<60>)_m electrode using an electrophoretic deposition method (4^<th> step). The film of the composite clusters with gold nanoparticle exhibits an incident photon-to-photocurrent efficiency (IPCE) as high as 54% and broad photocurrent action spectra (up to 1000 nm). The power conversion efficiency of the ITO/SnO_2/(H_2PC15MPP+C_<60>)_m composite electrode reaches as high as 1.5%, which is 45 times higher than that of the reference system consisting of the both single components of porphyrin and fullerene.

使用卟啉（供体）和富勒烯（受体）单位的第四纪自我组织来制备新型有机太阳能电池，并通过与金纳米颗粒在纳米结构的SNO_2电极上进行聚类。首先，制备了从主要成分（卟啉 - 阿甲硫醇）开始的（第一步）（第一步），制备了卟啉 - 烷烃单酸酯单层保护的金纳米颗粒（H_2pc NMPP：NIS）。这些卟啉修饰的金纳米颗粒与富勒烯分子形成复合物（第二步），并将它们聚集在乙腈/甲苯混合溶剂（3^<rd>步骤）中。然后可以将高色的复合簇作为三二数阵列组装到纳米结构的SNO_2膜上，以提供ITO/SNO_2/（H_2PC NMPP+C_ <60>）_ M电极使用电动物沉积法（4^<th>步骤）。带有金纳米颗粒的复合簇的膜表现出入射的光子到光电流效率（IPCE）高达54％和广泛的光电流动作光谱（高达1000 nm）。 ITO/SNO_2/（H_2PC15MPP+C_ <60>）_ M复合电极的功率转换效率高达1.5％，比由卟啉和富勒烯的单个组件组成的参考系统高45倍。

项目成果

Photovoltaic cells using composite nanoclusters of porphyrins and fullerenes with gold nanoparticles

• DOI: 10.1021/ja047768u
• 发表时间: 2005-02-02
• 期刊: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
• 影响因子: 15
• 作者: Hasobe, T;Imahori, H;Fukuzumi, S
• 通讯作者: Fukuzumi, S