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Tunable Adsorption and Film Formation of Mussel Adhesive Protein by Potential Control
KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap. Tsinghua University, China.
KTH, Skolan för kemivetenskap (CHE), Kemi, Yt- och korrosionsvetenskap.
2017 (Engelska)Ingår i: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 33, nr 35, s. 8749-8756Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Mussel adhesive proteins are of great interest in many applications because of their outstanding adhesive property and film forming ability. Understanding and controlling the film formation and its performance is crucial for the effective use of such proteins. In this study, we focus on the potential controlled film formation and compaction of one mussel adhesive protein, Mefp-1. The adsorption and film-forming behavior of Mefp-1 on a platinum (Pt) substrate under applied potentials were investigated by cyclic voltammetry, potential-controlled electro-chemical impedance spectroscopy (EIS), and quartz crystal microbalance with dissipation monitoring (QCM-D). Moreover, microfriction measurements were performed to evaluate the mechanical properties of the Mefp-1 films formed at selected potentials. The results led to the conclusion that Mefp-1 adsorbs on the Pt substrate through both electrostatic and nonelectrostatic interactions and shows an effective blocking effect for the electroactive sites on the substrate. The properties of the adsorbed Mefp-1 film vary with the applied potential, and the compactness of the adsorbed Mefp-1 film can be reversibly tuned by the applied potential.

Ort, förlag, år, upplaga, sidor
American Chemical Society (ACS), 2017. Vol. 33, nr 35, s. 8749-8756
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Annan kemi
Identifikatorer
URN: urn:nbn:se:kth:diva-215369DOI: 10.1021/acs.langmuir.6b04125ISI: 000410015000020PubMedID: 28071917Scopus ID: 2-s2.0-85028941962OAI: oai:DiVA.org:kth-215369DiVA, id: diva2:1148140
Forskningsfinansiär
VINNOVA, 2013-02073
Anmärkning

QC 20171010

Tillgänglig från: 2017-10-10 Skapad: 2017-10-10 Senast uppdaterad: 2017-10-10Bibliografiskt granskad

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Zhang, FanXie, GuoxinPan, Jinshan
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