Document Detail


In Situ Real Time Monitoring of Surface Transformation: Ellipsometric Microscopy Imaging of Electrografting at Microstructured Gold Surfaces.
MedLine Citation:
PMID:  23351088     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Surface chemical reactivity is imaged by combining electrochemical activation of a surface transformation process with spatio-temporal ellipsometric microscopy. An imaging ellipsometric microscope is built, allowing ellipsometric images of surfaces with a lateral resolution of ~1 µm and a thickness sensitivity of ~0.1 nm in air and 0.4 nm in a liquid. These performances are particularly adapted for using such optical setup as an in situ real time chemical microscope to observe a chemical surface transformation. This microscope is tested for the monitoring of the electrochemically actuated diazonium grafting of a gold surface. Such reaction is a model system of organic material deposition on a gold surface induced by an electrochemical actuation. Using either plain or physically or chemically structured electrodes, it allows for the characterization of local phenomena associated with the electrografting process. This illustrates its potential to reveal the local (electro)chemical reactivity of surfaces.
Authors:
Sorin Munteanu; Nicolas Garraud; Jean-Paul Roger; Fabien Amiot; Jian Shi; Yong Chen; Catherine Combellas; Frédéric Kanoufi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-28
Journal Detail:
Title:  Analytical chemistry     Volume:  -     ISSN:  1520-6882     ISO Abbreviation:  Anal. Chem.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370536     Medline TA:  Anal Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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