A multidonor–photosensitizer–multiacceptor triad for long-lived directional charge separation

Tina Schlotthauer; Robert Schroot; Starla D. Glover; Leif Hammarström; Michael Jäger; Ulrich Sigmar Schubert

doi:10.1039/c7cp05593e

Abstract

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The modular assembly of a directional photoredox-active multidonor-photosensitizer-multiacceptor (D<sub>n</sub>-P-A<sub>m</sub>) architecture is presented. The triad assembly features a central Ru(ii) sensitizer equipped with pendant polymer chains consisting of multiple triarylamine (pTARA) and naphthalene diimide (pNDI) units, respectively. Upon excitation, the efficient formation (>96%) of charge separation (CS) was observed featuring similar CS lifetimes (400 ns) as related molecular triads. In contrast, a significant additional longer-lived CS component (2400 ns, 30%) is observed indicating multiple contributing pathways.

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A multidonor–photosensitizer–multiacceptor triad for long-lived directional charge separation

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