Cited 2 time in webofscience Cited 1 time in scopus

Material-Selective Polydopamine Coating in Dimethyl Sulfoxide

Title
Material-Selective Polydopamine Coating in Dimethyl Sulfoxide
Authors
Park, Hong K.Park, Ji HunLee, HaeshinHong, Seonki
DGIST Authors
Hong, Seonki
Issue Date
2020-10
Citation
ACS Applied Materials and Interfaces, 12(43), 49146-49154
Type
Article
Article Type
Article
Author Keywords
polydopamine coatingmaterial-independent coatingmaterial-selective coatingdimethyl sulfoxidesurface patterning
Keywords
REDUCEDGRAPHENE OXIDESURFACE-CHEMISTRYHYDROGEN-BONDCATECHOLADHESIONFILMSIMMOBILIZATIONPERFORMANCEREDUCTIONTITANIUM
ISSN
1944-8244
Abstract
Polydopamine coating is known to be performed in a material-independent manner and has become a popular tool when designing a surface-functionalization strategy of a given material. Studies to improve polydopamine coatings have been reported, aiming to reduce the coating time (by transition metals, oxidants, applied voltages, or microwave irradiation), control surface roughness using catechol derivatives, and vary the ad-layer molecules formed on an underlying polydopamine layer. However, none of the techniques have changed the most important intrinsic property of polydopamine, the surface-independent coating. Currently, no method has been reported to modify this property to create a material-selective 'smart' polydopamine coating. Herein, we report a method with polydopamine to differentiate the chemistry of surfaces. We found that the polydopamine coating was largely inhibited on silicon-containing surfaces such as Si wafers and quartz crystals in a dimethyl sulfoxide (DMSO)/phosphatebuffered saline (PBS) cosolvent, while the coating properties on other materials remained mostly unchanged. Among the various interface bonding mechanisms of coordination, namely, cation-π, π-π stacking, and hydrogen-bonding interactions, the DMSO/PBS cosolvent effectively inhibits hydrogen-bond formation between catechol and SiO2, resulting in surface-selective 'smart' polydopamine coatings. The new polydopamine coating is useful for functionalizing patterned surfaces such as Au patterns on SiO2 substrates. Considering that Si wafer is the most widely used substrate, the surface-selective polydopamine coating technique described herein opens up a new direction in surface functionalization and interface chemistry. © 2020 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/12647
DOI
10.1021/acsami.0c11440
Publisher
American Chemical Society
Related Researcher
  • Author Hong, Seonki Biomaterials & Biointerface Engineering Laboratory
  • Research Interests Bio-inspired organic materials; Polymeric biomaterials; Surface biofunctionalization; biochip fabrication
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceBiomaterials & Biointerface Engineering Laboratory1. Journal Articles


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