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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

基本信息

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

项目摘要

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.

利用卟啉（供体）和富勒烯（受体）单元的四元自组装，通过金纳米粒子在纳米SnO_2电极上的簇合，制备了新型有机太阳能电池。首先，以卟啉-硫醇为主要组分，制备了卟啉-硫醇单分子层保护的金纳米粒子（H_2PC nMPP：为间隔基中亚甲基的数目）。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），并且它们在乙腈/甲苯混合溶剂中聚集（第三<rd>步）。然后用电泳沉积法（4步）将高度着色的复合团簇组装到纳米SnO_2薄膜上，得到ITO/SnO_2/（H_2PC nMPP+C_<60>）_m电极<th>。该复合团簇薄膜具有高达54%的入射光-光电流转换效率（IPCE）和宽的光电流作用光谱（可达1000 nm）。ITO/SnO_2/（H_2PC15MPP+C_<60>）_m复合电极的光电转换效率高达1.5%，是由卟啉和富勒烯组成的参比体系的45倍。

项目成果

期刊论文数量（22）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Hydrogen bonding effects on the surface structure and photoelectrochemical properties of nanostructured SnO2 electrodes modified with porphyrin and fullerene composites.

DOI：
10.1021/jp0537409
发表时间：
2005-09
期刊：
The journal of physical chemistry. B
影响因子：
0
作者：
H. Imahori;Jia‐cheng Liu;H. Hotta;Aiko Kira;T. Umeyama;Y. Matano;Guifeng Li;S. Ye;Marja Isosomppi;N. Tkachenko;H. Lemmetyinen
通讯作者：
H. Imahori;Jia‐cheng Liu;H. Hotta;Aiko Kira;T. Umeyama;Y. Matano;Guifeng Li;S. Ye;Marja Isosomppi;N. Tkachenko;H. Lemmetyinen

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