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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >Microwave-accelerated surface modification of plasmonic gold thin films with self-assembled monolayers of alkanethiols
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Microwave-accelerated surface modification of plasmonic gold thin films with self-assembled monolayers of alkanethiols

机译：自组装单链烷硫醇的等离子体加速金薄膜的微波加速表面改性

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摘要

A rapid surface modification technique for the formation of self-assembled monolayers (SAMs) of alkanethiols on gold thin films using microwave heating in <10 min is reported. In this regard, SAMs of two model alkanethiols, 11-mercaptoundecanoic acid (11-MUDA, to generate a hydrophilic surface) and undecanethiol (UDET, a hydrophobic surface), were successfully formed on gold thin films using selective microwave heating in (1) a semicontinuous fashion and (2) a continuous fashion at room temperature (24 h, control experiment, no microwave heating). The formation of SAMs of 11-MUDA and UDET was confirmed by contact angle measurements, Fourier transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The contact angles for water on SAMs formed by the selective microwave heating and conventional room temperature incubation technique (24 h) were measured to be similar for 11-MUDA and UDET. FT-IR spectroscopy results confirmed that the internal structures of SAMs prepared using both microwave heating and room temperature were similar. XPS results revealed that the organic and sulfate contaminants found on bare gold thin films were replaced by SAMs after the surface modification process had been conducted using both microwave heating and room temperature.
机译：报道了一种快速的表面改性技术，该技术可在不到10分钟的时间内通过微波加热在金薄膜上形成链烷硫醇的自组装单分子层（SAMs）。在这方面，在（1）中使用选择性微波加热成功地在金薄膜上形成了两种模型链烷硫醇的SAMs，即11-巯基十一酸（11-MUDA，可产生亲水表面）和十一烷硫醇（UDET，疏水表面）。半连续方式和（2）在室温下（24小时，对照实验，无微波加热）连续方式。通过接触角测量，傅立叶变换红外（FT-IR）光谱和X射线光电子能谱（XPS）确认了11-MUDA和UDET的SAM的形成。对于11-MUDA和UDET，通过选择性微波加热和常规室温孵育技术（24小时）形成的水在SAM上的水接触角被测量为相似。 FT-IR光谱结果证实，使用微波加热和室温制备的SAM的内部结构相似。 XPS结果表明，在使用微波加热和室温进行表面改性后，裸金薄膜上发现的有机和硫酸盐污染物被SAM取代。

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