Electronic Communication in Tetrathiafulvalene (TTF)/C60 Systems: Toward Molecular Solar Energy Conversion Materials?

作者：Nazario Martı́n, Luis Sánchez, M. Ángeles Herranz, Beatriz M. Illescas, Dirk M. Guldi · 发表于：Accounts of Chemical Research · 年份：2007 · DOI：10.1021/ar700026t · 被引用次数：361 · 研究领域：Organic and Molecular Conductors Research、Fullerene Chemistry and Applications、Organic Electronics and Photovoltaics

The covalent connection of the electron acceptor C 60 to p-quinonoid pi-extended tetrathiafulvalenes (exTTFs) has allowed for the preparation of new photo- and electroactive conjugates able to act as artificial photosynthetic systems and active molecular materials in organic photovoltaics. The gain of aromaticity undergone by the pi-extended TTF unit in the oxidation process results in highly stabilized radical ion pairs, namely, C 60 (*-)/exTTF (*+). Lifetimes for such charge-separated states, ranging from a few nanoseconds to hundreds of microseconds, have been achieved by rationally modifying the nature of the chemical spacers. These long-lived radical pairs are called to play an important role for the conversion of sunlight into chemical or electrical power.