Probing Biological Molecule Orientation and Polymer Surface Structure at the Polymer/Solution Interface In Situ

Langmuir : the ACS Journal of Surfaces and Colloids
Ting LinZhan Chen

Abstract

Polymers are widely used for many applications ranging from biomedical materials, marine antifouling coatings, membranes for biomolecule separation, to substrates for enzyme molecules for biosensing. For such applications, it is important to understand molecular interactions between biological molecules and polymer materials in situ in real time. Such understanding provides vital knowledge to manipulate biological molecule-polymer interactions and to optimize polymer surface structures to improve polymer performance. In this research, sum frequency generation (SFG) vibrational spectroscopy was applied to study interactions between peptides (serving as models for biological molecules) and deuterated polystyrene (d8-PS, serving as a model for polymer materials). The peptide conformations/orientations and polymer surface phenyl orientation during the peptide-d8-PS interactions were determined using SFG. It was found that the π-π interaction between the aromatic amino acids on peptides and phenyl groups on d8-PS surface does not play a significant role. Instead, the peptide-d8-PS interactions are mediated by general hydrophobic interactions between the peptides and the polymer surface.

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Jan 17, 2017·Journal of the American Chemical Society·Xingquan ZouZhan Chen
Dec 13, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Xiaofeng HanZhan Chen

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Citations

Apr 22, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Chengcheng ZhangZhan Chen
May 21, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Feifei YinXiaolin Lu
Aug 12, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Bianca M de LimaPaula M Wood-Adams
Aug 31, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Lirong ShiZhan Chen
Oct 21, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Shuqing ZhangZhan Chen
Dec 15, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Hidenobu TanedaKeiji Tanaka

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