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Robust Benzo[g, h, i ]perylenetriimide Dye-Sensitized Electrodes in Air-Saturated Aqueous Buffer Solution

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Abstract

Highly electron deficient benzo[ghi]perylenetriimide (BPTI) chromophores were persistently anchored to a metal oxide electrode surface and reversible formation of their radical anions was shown in air-saturated aqueous buffer solution. Our results show a very low reaction-rate constant of BPTI.− with O2 (k=1.92±0.05×10−2 s−1). BPTI is a robust chromophore that can be used as the electron acceptor in molecule-based artificial photosynthetic devices for direct water splitting in aqueous phase.

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