Highly Stable 3,4,9,10-Perylenediimide Radical Anions Immobilized in Robust Zirconium Phosphonate Self-Assembled Films

Self-assembled thin films of 3,4,9,10-perylenediimides (PDIs) containing up to 50 PDI layers were grown on quartz slides using the zirconium phosphonate technique. When the films were immersed in aqueous solutions of the sodium dithionite reducing agent, in situ reduction of the dye was observed, ge...

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Bibliographic Details
Published in:Langmuir 2007-11, Vol.23 (24), p.11972-11976
Main Authors: Marcon, Rodrigo O, Brochsztain, Sergio
Format: Article
Language:English
Subjects:
Anions
Chemistry
Colloidal state and disperse state
Coloring Agents - chemistry
Dithionite - chemistry
Exact sciences and technology
General and physical chemistry
Imides - chemistry
Membranes, Artificial
Microscopy, Atomic Force
Organophosphonates - chemistry
Oxidation-Reduction
Oxygen - chemistry
Perylene - analogs & derivatives
Perylene - chemistry
Quartz - chemistry
Spectrophotometry
Surface physical chemistry
Surface Properties
Zirconium - chemistry
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Description
Summary:Self-assembled thin films of 3,4,9,10-perylenediimides (PDIs) containing up to 50 PDI layers were grown on quartz slides using the zirconium phosphonate technique. When the films were immersed in aqueous solutions of the sodium dithionite reducing agent, in situ reduction of the dye was observed, generating a purple film containing PDI radical anions. The PDI radical anions formed within the films were rather stable, persisting for several minutes in the presence of atmospheric oxygen. Atomic force microscopy (AFM) images showed that the film surface was rather smooth and pinhole-free.
ISSN:0743-7463
1520-5827
DOI:10.1021/la702642h