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Cited by 291

The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.

Probing the Surface Hydration of Nonfouling Zwitterionic and PEG Materials in Contact with Proteins

Leng, Chuan, Hung, Hsiang-Chieh, Sun, Shuwen, Wang, Dayang, Li, Yuting, Jiang, Shaoyi, Chen, Zhan·2015·ACS Applied Materials & Interfaces

Abstract

Zwitterionic polymers and poly(ethylene glycol) (PEG) have been reported as promising nonfouling materials, and strong surface hydration has been proposed as a significant contributor to the nonfouling mechanism. Better understanding of the similarity and difference between these two types of materials in terms of hydration and protein interaction will benefit the design of new and effective nonfouling materials. In this study, sum frequency generation (SFG) vibrational spectroscopy was applied for in situ and real-time assessment of the surface hydration of the sulfobetaine methacrylate (SBMA) and oligo(ethylene glycol) methacrylate (OEGMA) polymer brushes, denoted as pSBMA and pOEGMA, in contact with proteins. Whereas a majority of strongly hydrogen-bonded water was observed at both pSBMA and pOEGMA surfaces, upon contact with proteins, the surface hydration of pSBMA remained unaffected, but the water ordering at the pOEGMA surface was disturbed. The effects of free sulfobetaine, free PEG chains with two different molecular weights, and PEG coated gold nanoparticles on the surface hydration of proteins were investigated. The results indicated that free sulfobetaine could strengthen the protein hydration layer, but free PEG chains greatly disrupt the protein hydration layer and likely directly interact with the protein molecules. In contrast to free PEG, the PEG chains anchored on the nanoparticles behave similarly to the pOEGMA surface and could induce strong hydrogen bonding of the water molecules at the protein surfaces.

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Crossref · 10.1021/acsami.5b05627

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Metadata

Authors
Leng, C., Hung, H.-C., Sun, S., Wang, D., Li, Y., Jiang, S., & Chen, Z.
Venue
ACS Applied Materials & Interfaces
Published
2015-07-24
Volume
7
Issue
30
Pages
16881-16888
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W848448822
Cited by
291
References
44
FWCI
8.81
Type
journal article
Language
en
Open access
closed

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