Effects of interfacial redox in mussel adhesive protein films on mica.
Effects of interfacial redox in mussel adhesive protein films on mica.
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DOI:
10.1002/adma.201003580
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发表时间:
2011-05-24
影响因子:
29.4
通讯作者:
Waite, J. Herbert
中科院分区:
文献类型:
--
作者:
Yu, Jing;Wei, Wei;Danner, Eric;Israelachvili, Jacob N.;Waite, J. Herbert
The 3,4-dihydroxyphenylalanine (Dopa)-containing proteins of mussels and sandcastle worms provide attractive design paradigms for engineering synthetic polymers as wet adhesives and coatings. Despite this, a generally accepted explanation of how Dopa interacts with most surfaces is not available. The effect of uncontrollable Dopa redox on the dependability of catechol as an anchoring functionality for polymers is a recognized problem for many mussel-inspired adhesives. Using a surface force apparatus, the effect of interfacial redox in mussel adhesive protein-3 (Mfp-3) films on mica was tested. The SFA results show that the adhesion properties of Mfp-3 are closely coupled to the redox state of Dopa. The oxidation of Dopa to Dopaquinone diminishes the adhesion of Mfp-3 on mica surfaces. Dopaquinone tautomers could be associated with structural changes in oxidized adhesive mussel foot proteins such as Mfp-3.
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