Charge separation in a covalently-linked phthalocyanine-oligo(p- phenylenevinylene)-C60 system. Influence of the solvent polarity
Cid JJ, Kahnt A, Vazquez P, Guldi DM, Torres T (2012)
Publication Type: Journal article, Original article
Publication year: 2012
Journal
Original Authors: Cid J.-J., Kahnt A., Vazquez P., Guldi D.M., Torres T.
Publisher: Elsevier
Book Volume: 108
Pages Range: 216-224
DOI: 10.1016/j.jinorgbio.2011.11.011
Abstract
A photo- and redoxactive system ZnPc-oPPV-C 2, in which the photoexcited state electron donor - zinc phthalocyanine - and the ground state electron acceptor - C - are connected by a oligo(p- phenylenevinylene) (oPPV) spacer, has been synthesized in a multi-step synthesis by means of two consecutive Wadsworth-Horner-Emmons and a dipolar 1,3-cycloaddition reactions as key steps. The simpler system ZnPc-C 1 has also been prepared as a reference model for photophysical studies. In this regards, the photophysical investigations by means of fluorescence, flash photolysis, and transient-absorption spectroscopy have manifested a clear dependence between charge transfer kinetics and spatial arrangement. In both systems, intramolecular charge separation evolves from the photoexcited ZnPc and yields the ZnPc /C radical ion pairs. Interestingly, the ZnPc /C radical ion pair lifetimes and quantum yields are strongly impacted by the solvent polarity and the distance. To this end, maximum radical ion pair lifetimes of 2900 and 5530 ps were found in anisol for 1 and 2, respectively. © 2011 Elsevier Inc. All rights reserved.
Authors with CRIS profile
Axel Kahnt
Lehrstuhl für Physikalische Chemie I
Dirk Michael Guldi
Lehrstuhl für Physikalische Chemie I
Involved external institutions
Spain (ES)How to cite
APA:
Cid, J.-J., Kahnt, A., Vazquez, P., Guldi, D.M., & Torres, T. (2012). Charge separation in a covalently-linked phthalocyanine-oligo(p- phenylenevinylene)-C60 system. Influence of the solvent polarity. Journal of Inorganic Biochemistry, 108, 216-224. https://doi.org/10.1016/j.jinorgbio.2011.11.011
MLA:
Cid, Juan-Jose, et al. "Charge separation in a covalently-linked phthalocyanine-oligo(p- phenylenevinylene)-C60 system. Influence of the solvent polarity." Journal of Inorganic Biochemistry 108 (2012): 216-224.
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