Document Detail


Oxygen concentration control of dopamine-induced high uniformity surface coating chemistry.
MedLine Citation:
PMID:  23273315     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Material surface engineering has attracted great interest in important applications, including electronics, biomedicine, and membranes. More recently, dopamine has been widely exploited in solution-based chemistry to direct facile surface modification. However, unsolved questions remain about the chemical identity of final products, their deposition kinetics and binding mechanism. In particular, the reaction kinetics is a key for improving surface modification efficiency. Here, we demonstrate that high O2 concentrations in the dopamine-solution lead to highly homogeneous, thin-layer deposition on any material surfaces via accelerated reaction-kinetics, elucidated by Le Chatelier's principle toward dopamine oxidation steps in a Michael-addition reaction. As a result, highly-uniform, ultra-smooth modified surfaces are achieved in much shorter deposition times. This finding provides new insights into the effect of reaction-kinetics and molecular geometry on the uniformity of modifications for surface engineering techniques.
Authors:
Hyo Won Kim; Bryan D McCloskey; Tae Hwan Choi; Changho Lee; Min-Joung Kim; Benny D Freeman; Ho Bum Park
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-31
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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