| Reversible light-controlled conductance switching of azobenzene-based metal/polymer nanocomposites. | |
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MedLine Citation:
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PMID: 20972322 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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We present a new concept of light-controlled conductance switching based on metal/polymer nanocomposites with dissolved chromophores that do not have intrinsic current switching ability. Photoswitchable metal/PMMA nanocomposites were prepared by physical vapor deposition of Au and Pt clusters, respectively, onto spin-coated thin poly(methylmethacrylate) films doped with azo-dye molecules. High dye concentrations were achieved by functionalizing the azo groups with tails and branches, thus enhancing solubility. The composites show completely reversible optical switching of the absorption bands upon alternating irradiation with UV and blue light. We also demonstrate reversible light-controlled conductance switching. This is attributed to changes in the metal cluster separation upon isomerization based on model experiments where analogous conductance changes were induced by swelling of the composite films in organic vapors and by tensile stress. |
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Authors:
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Christina Pakula; Vladimir Zaporojtchenko; Thomas Strunskus; Dordaneh Zargarani; Rainer Herges; Franz Faupel |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-10-25 |
Journal Detail:
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Title: Nanotechnology Volume: 21 ISSN: 1361-6528 ISO Abbreviation: Nanotechnology Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-10-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101241272 Medline TA: Nanotechnology Country: England |
Other Details:
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Languages: eng Pagination: 465201 Citation Subset: IM |
Affiliation:
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Institut für Materialwissenschaft-Materialverbunde, Technische Fakultät der Christian-Albrechts-Universität zu Kiel, Kiel, Germany. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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