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Adsorbed Water Structure on Acrylate-Based Biocompatible Polymer Surface

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Title
Adsorbed Water Structure on Acrylate-Based Biocompatible Polymer Surface
Author(s)
Saptarsi Mondal; Jooyoun Kang; Kwanghee Park; Jong Min Lim; Ha, Jeong-Hyon; Kyungwon Kwak; Minhaeng Cho
Publication Date
2021-09-30
Journal
Journal of Physical Chemistry Letters, v.12, no.38, pp.9275 - 9282
Publisher
American Chemical Society
Abstract
© 2021 American Chemical Society.The role of water in the excellent biocompatibility of the acrylate-based polymers widely used for antibiofouling coating material has been realized previously. Here, we report femtosecond mid-infrared pump-probe spectroscopy of the OD stretch band of HOD molecule adsorbed on highly biocompatible poly(2-methoxyethyl) acrylate [PMEA] and poorly biocompatible poly(2-phenoxyethyl) acrylate [PPEA], both of which reveal that there are two water species with significantly different vibrational lifetime. PMEA interacts more strongly with water than PPEA through the H-bonding interaction between carbonyl (CO) and water. The vibrational lifetime of the OD stretch in PPEA is notably longer by factors of 3 and 7 than those in PMEA and bulk water, respectively. The IR-pump visible-probe photothermal imaging further unravels substantial spatial overlap between polymer CO group and water for hydrated PMEA and a significant difference in surface morphology than those in PPEA, which exhibits the underlying relationships among polymer-water interaction, surface morphology, and biocompatibility.
URI
https://pr.ibs.re.kr/handle/8788114/10611
DOI
10.1021/acs.jpclett.1c02491
ISSN
1948-7185
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > 1. Journal Papers (저널논문)
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