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APTES mediated modular modification of regenerated silk fibroin in a water solution

机译:Aptes介导再生丝素蛋白在水溶液中的模块化改性

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摘要

Silk fibroin (SF) is a natural polymer of increasing interest for applications ranging from tissue engineering to optoelectronics. Here, we report a new mild and facile strategy targeted on hydroxylic pendants of serine and tyrosine residues, to functionalize SF in water, based on the use of amino(propyl)triethoxysilane (APTES), a common silylating agent. APTES is exploited as a bifunctional linker to bind SF through the triethoxysilane a-ends and to simultaneously graft species of interest, even hydrophobic ones, by means of the end g-amino groups. By using a fluorescent oligothiophene bearing amino reacting end groups (T3) we monitor the process simply through fluorescence detection and we demonstrate the value of the proposed method to achieve chemically modified SF materials. Moreover, we show that the new SF based biocomposite retains silk filmability and transparency but also shows T3 fluorescence and markedly enhanced mechanical robustness.
机译:丝素蛋白(SF)是从组织工程到光电子的应用增加的天然聚合物。 在这里,我们报告了靶向丝氨酸和酪氨酸残基的羟基侧膜的新温和和体面的策略,基于氨基(丙基)三乙氧基硅烷(Aptes),普通甲硅烷基化剂的使用在水中官能化SF。 易于作为双官能接头被利用,以通过三乙氧基硅烷末端将SF结合,并通过端部G-氨基将甚至是疏水性的脱气物种。 通过使用荧光寡噬杉轴承氨基反应端(T3),我们通过荧光检测简单地监测该过程,我们证明了所提出的方法实现化学改性的SF材料的价值。 此外,我们表明新的基于SF的生物复合材料保留了丝质可集体和透明度,而且还显示出T3荧光并显着提高机械稳健性。

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