Issue 5, 2011
From the journal:

Journal of Materials Chemistry

Charge and energy transfer processes in ruthenium(II) phthalocyanine based electron donor–acceptor materials—implications for solar cell performance†‡

Fabian Spänig,a   Ismael López-Duarte,b   Markus K. R. Fischer,c   M. Victoria Martínez-Díaz,b   Peter Bäuerle,c   Tomás Torres*bd  and  Dirk M. Guldi*a  

* Corresponding authors

a Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-University Erlangen-Nuremberg, Egerlandstr. 3, Erlangen, Germany
E-mail: dirk.guldi@chemie.uni-erlangen.de
Fax: (+49) 9131-852-7340

b Departamento de Química Orgánica, Universidad Autónoma de Madrid, Cantoblanco, Spain
E-mail: tomas.torres@uam.es

c Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, Ulm, Germany
E-mail: peter.baeuerle@uni-ulm.de
Fax: (+49) 731-502-2840

d IMDEA-Nanociencia, Facultad de Ciencias, Ciudad Universitaria de Cantoblanco, Madrid, Spain

Abstract

Six supramolecular electron donor–acceptor hybrids, based on a ruthenium(II) phthalocyanine [RuPc] coordinating different dendritic oligothiophene (DOT) ligands [Py-nT] (n = 3, 9, 21) in either one [RuPcCO(Py-nT)] or two [RuPc(Py-nT)2] axial positions, have been characterized by standard spectroscopic methods and their photophysical behavior has been established by using ultrafast and fast time-resolved techniques. Based on the spectrochemical and radiolytically generated [Py-nT] (i.e., one-electron reduction of [Py-nT]) and [RuPcCO(Py) or RuPc(Py)2] (i.e., one-electron oxidation of [RuPcCO(Py) or RuPc(Py)2]) features, the deactivation processes were assigned to a solvent independent energy transfer in RuPcCO(Py-3T) and RuPc(Py-3T)2 and a strongly solvent dependent charge transfer mechanism, which competes with the energy transfer and the intersystem crossing for RuPcCO(Py-9T), RuPc(Py-9T)2, RuPcCO(Py-21T) and RuPc(Py-21T)2.

Graphical abstract: Charge and energy transfer processes in ruthenium(II) phthalocyanine based electron donor–acceptor materials—implications for solar cell performance

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Article information

DOI
https://doi.org/10.1039/C0JM00579G
Article type
Paper
Submitted
02 Mar 2010
Accepted
28 Jul 2010
First published
27 Aug 2010

J. Mater. Chem., 2011,21, 1395-1403

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Charge and energy transfer processes in ruthenium(II) phthalocyanine based electron donor–acceptor materials—implications for solar cell performance

F. Spänig, I. López-Duarte, M. K. R. Fischer, M. V. Martínez-Díaz, P. Bäuerle, T. Torres and D. M. Guldi, J. Mater. Chem., 2011, 21, 1395 DOI: 10.1039/C0JM00579G

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