Identification and Characterization of Redox Sites in Supramolecular Systems and Their Relevance for the Design of Photoactive Devices. Ru(II)/C60-Based Donor-Acceptor Dyads

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Title:Identification and Characterization of Redox Sites in Supramolecular Systems and Their Relevance for the Design of Photoactive Devices. Ru(II)/C60-Based Donor-Acceptor Dyads
Creators:
Carano, Maurizio
Ceroni, Paola
Maggini, Michele
Marcaccio, Massimo
Menna, Enzo
Paolucci, Francesco
Roffia, Sergio
Scorrano, Gianfranco
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 66, 2, pp. 276-290
Uncontrolled Keywords:Bipyridines, Fullerenes, Redox series, Cyclic voltammetry, Steroids, Supramolecular chemistry, Ruthenium complexes, Electrochemistry, Donor-acceptor systems

Abstract

Two dyads consisting of a mononuclear or a dinuclear ruthenium complex covalently linked to a fullerenopyrrolidine through a rigid androstane spacer, have been prepared through azomethine ylide cycloaddition to C<sub>60</sub>. Electrochemical and photophysical studies revealed that ground-state electronic interactions between the dinuclear ruthenium chromophore and the fullerenopyrrolidine moiety are small. The redox series observed for the dyads correspond to the superimposition of the reduction patterns of the fullerene core and of the Ru(II)-bipyridine moieties. The results of the electrochemical investigation allow us to rationalize the photophysical behaviour of the two species by identifying the thermodynamically allowed and forbidden routes for the deactivation of the Ru-based metal-to-ligand charge transfer (MLCT) excited state. <p>

Title:Identification and Characterization of Redox Sites in Supramolecular Systems and Their Relevance for the Design of Photoactive Devices. Ru(II)/C60-Based Donor-Acceptor Dyads
Creators:
Carano, Maurizio
Ceroni, Paola
Maggini, Michele
Marcaccio, Massimo
Menna, Enzo
Paolucci, Francesco
Roffia, Sergio
Scorrano, Gianfranco
Uncontrolled Keywords:Bipyridines, Fullerenes, Redox series, Cyclic voltammetry, Steroids, Supramolecular chemistry, Ruthenium complexes, Electrochemistry, Donor-acceptor systems
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:66
Number:2
Page Range:pp. 276-290
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20010276UNSPECIFIED
ID Code:1789
Item Type:Article
Deposited On:06 Feb 2009 17:12
Last Modified:06 Feb 2009 16:12

Citation

Carano, Maurizio; Ceroni, Paola; Maggini, Michele; Marcaccio, Massimo; Menna, Enzo; Paolucci, Francesco; Roffia, Sergio; Scorrano, Gianfranco (2001) Identification and Characterization of Redox Sites in Supramolecular Systems and Their Relevance for the Design of Photoactive Devices. Ru(II)/C60-Based Donor-Acceptor Dyads. Collection of Czechoslovak Chemical Communications, 66 (2). pp. 276-290. ISSN 0010-0765

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