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首页> 外文期刊>Chemistry: A European journal >Electrostatic Attachment of Gold and Poly(Iactic acid) Nanoparticles onto omega-Aminoalkanoic Acid Self-Assembled Monolayers on 316L Stainless Steel
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Electrostatic Attachment of Gold and Poly(Iactic acid) Nanoparticles onto omega-Aminoalkanoic Acid Self-Assembled Monolayers on 316L Stainless Steel

机译：在316L不锈钢上将金和聚乳酸纳米粒子静电附着到ω-氨基链烷酸自组装单分子膜上

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The assembly of poly (lactic acid) (PLA) nanoparticles on a 12-ami-nodecanoic acid (ADA) self-assembled monolayer (SAM) is described.Assembly is accomplished through electrostatic interactions between the positively charged SAM and the negatively charged PLA nanoparticles.The strategy used involves two steps in which a preliminary electrochemical coating of the ADA SAM is followed by a second step that involves immersing the SAM in a solution containing gold or PLA nanoparticles.The SAM was characterized by using cyclic voltammetry (CV),X-ray photoelectron spectroscopy (XPS),FTIR spectroscopy,and contact angle measurements,whereas scanning electron microscopy (SEM) was used to image the nanoparticles after electrostatic attachment was achieved.We found that the surface coverage of the nanoparticles could be controlled by modulating the electrostatic interactions between the negatively charged particles and the positively charged SAM surface by varying the pH of the nanoparticle solution,the immersion time,and the number of cyclic voltammetry scans under which the SAM was formed.
机译：描述了聚乳酸（PLA）纳米颗粒在12酰胺酸（ADA）自组装单分子膜（SAM）上的组装。通过带正电的SAM与带负电的PLA纳米颗粒之间的静电相互作用完成组装使用的策略涉及两个步骤，其中先进行ADA SAM的电化学涂层，然后进行第二步，将SAM浸入包含金或PLA纳米颗粒的溶液中.SAM的特征在于使用循环伏安法（CV），X射线光电子能谱（XPS），傅立叶变换红外光谱（FTIR）和接触角测量，然后使用扫描电子显微镜（SEM）对纳米粒子进行静电附着后成像。我们发现可以通过调节纳米粒子的表面来控制纳米粒子的表面覆盖率。通过改变纳米粒子溶液的pH值，带负电的粒子与带正电的SAM表面之间的静电相互作用n，浸没时间和形成SAM的循环伏安扫描的次数。

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