國家衛生研究院 NHRI:Item 3990099045/15746
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/15746


    Title: Electrified interactions of polyzwitterions with charged surfaces: Role of dipole orientation and surface potentials
    Authors: Lin, CH;Wu, JG;Lin, HH;Luo, SC
    Contributors: Institute of Biomedical Engineering and Nanomedicine
    Abstract: The zwitterionic groups possess strong dipole moments, leading to inter- or intrachain interactions among zwitterionic polymers. This study aims to demonstrate the interaction of polyzwitterions poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC), and poly(carboxybetaine methacrylate) (PCBMA) with electrified surfaces, despite their electrically neutral nature. We studied the adsorption of polyzwitterions and their monomers on electrified surfaces by using an electrochemical quartz crystal microbalance with dissipation (EQCM-D). The interaction between zwitterionic molecules and charged surfaces is explored by adjusting the surface potentials. Interestingly, the adsorption of polyzwitterions can be influenced by external potential, primarily due to the formation of polyzwitterions restricting the mobility of zwitterionic groups, affecting the adsorption behavior of polyzwitterions based on the surface potential. The impact is determined by the arrangement of positive and negative ions within the zwitterionic groups, which are the dipole orientation. Additionally, surface potentials determine the adsorption rate, amount, and chain conformation of the adsorbed thin polyzwitterion layers. The effect of ionic strength was investigated by introducing electrolytes into the aqueous solutions to assess the range of influenced surface potentials.
    Date: 2024-04-09
    Relation: Langmuir. 2024 Apr 09;40(14):7653-7660.
    Link to: http://dx.doi.org/10.1021/acs.langmuir.4c00343
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0743-7463&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:001192452100001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85189006950
    Appears in Collections:[Others] Periodical Articles

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