Fast Charge Separation in Distant Donor–Acceptor Dyads Driven by Relaxation of a Hot Excited State
Zimu Wei, Abbey M. Philip, Wolter F. Jager, Ferdinand C. Grozema
Abstract
-oligophenylene bridges. Planarization of the bridge endorses an increased charge delocalization and a prominent CT character in the relaxed ES and forms the origin for the evident fast CS at the longest distance. Thus, the relaxation of the hot ES and the concomitantly enhanced charge delocalization adds a new caveat to the classic nature of distance-dependent CS in artificial DBA chromophores and recommends a cautious treatment of the attenuation factor (β) while discussing anomalous CS trends.
Topics & Concepts
Delocalized electronExcited stateChromophoreGround stateAcceptorChemistryExcitationMolecular physicsRelaxation (psychology)Photoinduced charge separationUltrafast laser spectroscopyCharge (physics)Atomic physicsChemical physicsPhotochemistryPhysicsOpticsCondensed matter physicsQuantum mechanicsLaserCatalysisArtificial photosynthesisBiochemistryPsychologyPhotocatalysisOrganic chemistrySocial psychologyPhotochemistry and Electron Transfer StudiesLuminescence and Fluorescent MaterialsPorphyrin and Phthalocyanine Chemistry