Aromaticity controls the excited-state properties of host–guest complexes of nanohoops
Gibu George, Olga A. Stasyuk, Alexander A. Voityuk, Anton J. Stasyuk, Miquel Solà
Abstract
]pyrrole ([4]PP). Their complexes with C60 fullerene show different behavior upon photoexcitation, depending on the degree of aromaticity. [4]DHPP acts as an electron donor, whereas [4]PP is a stronger electron acceptor than C60. The ultrafast charge separation combined with the slow charge recombination that we found for [4]PP⊃C60 indicates a long lifetime of the charge transfer state.
Topics & Concepts
AntiaromaticityPhotoexcitationAromaticityExcited statePyrroleHOMO/LUMOConjugated systemFullerenePhotochemistryMoleculeAcceptorChemistryCharge (physics)Electron acceptorMaterials scienceChemical physicsAtomic physicsOrganic chemistryPhysicsQuantum mechanicsCondensed matter physicsPolymerSynthesis and Properties of Aromatic CompoundsFullerene Chemistry and ApplicationsOrganic Electronics and Photovoltaics