title: Tuning the Electron Acceptor in Phthalocyanine-Based Electron Donor-Acceptor Conjugates.
abstract: Zinc phthalocyanines (ZnPc) have been attached to the peri-position of a perylenemonoimide (PMI) and a perylenemonoanhydride (PMA), affording electron donor-acceptor conjugates 1 and 2, respectively. In addition, a perylene-monoimide-monoanhydride (PMIMA) has been connected to a ZnPc through its imido position to yield the ZnPc-PMIMA conjugate 10. The three conjugates have been studied for photoinduced electron transfer. For ZnPc-PMIMA 10, electron transfer occurs upon both ZnPc and PMIMA excitation, giving rise to a long-lived (340 ps) charge-separated state. For ZnPc-PMI 1 and ZnPc-PMA 2, stabilization of the radical ion pair states by using polar media is necessary. In THF, photoexcitation of either ZnPc or PMI/PMA produces charge-separated states with lifetimes of 375 and 163 ps, respectively.
authors.affiliation: Department of Chemistry and Pharmacy &, Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nuremberg, Egerlandstraße 3, 91058 Erlangen (Germany).
authors.forename: Michael
authors.initials: M
authors.lastname: Sekita
authors.affiliation: Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid (Spain).
authors.forename: Ángel J
authors.initials: ÁJ
authors.lastname: Jiménez
authors.affiliation: Departamento de Química, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid (Spain).
authors.forename: M Luisa
authors.initials: ML
authors.lastname: Marcos
authors.affiliation: Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid (Spain).
authors.forename: Esmeralda
authors.initials: E
authors.lastname: Caballero
authors.affiliation: Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid (Spain).
authors.forename: M Salomé
authors.initials: MS
authors.lastname: Rodríguez-Morgade
authors.affiliation: Department of Chemistry and Pharmacy &, Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nuremberg, Egerlandstraße 3, 91058 Erlangen (Germany). dirk.guldi@chemie.uni-erlangen.de.
authors.forename: Dirk M
authors.initials: DM
authors.lastname: Guldi
authors.affiliation: Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid (Spain). tomas.torres@uam.es.|IMDEA-Nanociencia, Facultad de Ciencias, Cantoblanco 28049 Madrid (Spain). tomas.torres@uam.es.
authors.forename: Tomás
authors.initials: T
authors.lastname: Torres
keywords: anhydrides; electron transfer; imides; perylene; phthalocyanine