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Fullerenes as Novel Acceptors in Photosynthetic Electron Transfer

✍ Scribed by Hiroshi Imahori; Yoshiteru Sakata


Book ID
102658391
Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
527 KB
Volume
1999
Category
Article
ISSN
1434-193X

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✦ Synopsis


We propose a novel strategy using fullerenes for the

The peculiar electron transfer properties of fullerenes can be explained by the small reorganization energies, which make construction of solar energy conversion systems that mimic the primary electron transfer events in photosynthesis. it possible to optimize artificial photosynthetic multistep charge separation. A combination of the two strategies, Redox-active fullerenes such as C 60 and C 70 were covalently bound to a porphyrin and the photophysical properties of the multistep electron transfer and small reorganization energy of fullerenes, has been applied to light energy conversion resulting compounds were investigated. Regardless of solvent and linkage, the charge-separated state is produced systems as well as the more complex molecular systems such as triads. Highly efficient photosynthetic multistep electron efficiently in zincporphyrin-fullerene dyads, showing that fullerenes are good electron acceptors. The most intriguing transfer has been realized at gold electrodes modified with self-assembled monolayers of fullerene-containing mole-characteristic of fullerenes in electron transfer is that they accelerate photoinduced charge separation as well as charge cules. These results will provide new principles and concepts to develop artificial photosynthetic materials as well as shift and slow down charge recombination, properties that are in sharp contrast with those of conventional two-molecular devices. dimensional aromatic acceptors such as quinones and imides.

Solar energy conversion is one of the most attractive top-


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Photoinduced Electron-Transfer Processes
✍ K. George Thomas; Manapurathu V. George; Prashant V. Kamat 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 German ⚖ 419 KB

## Abstract Photoinduced electron‐transfer processes in fullerene‐based donor–acceptor dyads (DBA) in homogeneous and cluster systems are summarized. Stabilization of charge has been achieved through the use of fullerene substituted‐aniline/heteroaromatic dyads with tunable ionization potentials