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Open AccessArticle

Vapor-Deposited Reactive Coating with Chemically and Topographically Erasable Properties

School of Dentistry, Graduate Institute of Clinical Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei 10048, Taiwan
Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
Department of Chemistry and Biotechnology, Swinburne University of Technology, Victoria 3122, Australia
Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
Authors to whom correspondence should be addressed.
Y.-C. Chiang and C.-P. Ho contributed equally to this work.
Polymers 2019, 11(10), 1595;
Received: 8 August 2019 / Revised: 21 September 2019 / Accepted: 26 September 2019 / Published: 29 September 2019
(This article belongs to the Special Issue Polymeric Colloidal Materials for Biomedical Applications)
An erasable coating was prepared to modify material surfaces with accessibilities, including specific conjugation, elimination of the conjugated chemistry/function, and the reactivation of a second new chemistry/function. The coating was realized based on a vapor-deposited functional poly-p-xylylene coating composed of an integrated 3-((3-methylamido)-disulfanyl)propanoic acid functional group, resulting in not only chemical reactivity, but also a disulfide interchange mechanism. Mechanically, the coating was robust in terms of the thermal stability and adhesive property on a variety of substrate materials. Chemically, the anchoring site of carboxylic acid was accessible for specific conjugation, and a disulfide bridge moiety was used to disengage already installed functions/properties. In addition, the homogeneous nature of the vapor-phased coating technique is known for its morphology/thickness and distribution of the functional moiety, which allowed precision to address the installation or erasure of functions and properties. Characterization of the precisely confined hydrophilic/hydrophobic wetting property and the alternating reversibility of this wetting property on the same surface was achieved. View Full-Text
Keywords: poly-p-xylylene; coating; surface modification; erasable property; biointerface poly-p-xylylene; coating; surface modification; erasable property; biointerface
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MDPI and ACS Style

Chiang, Y.-C.; Ho, C.-P.; Wang, Y.-L.; Chen, P.-C.; Wang, P.-Y.; Chen, H.-Y. Vapor-Deposited Reactive Coating with Chemically and Topographically Erasable Properties. Polymers 2019, 11, 1595.

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