Microwave-accelerated surface modification of plasmonic gold thin films with self-assembled monolayers of alkanethiols.
Microwave-accelerated surface modification of plasmonic gold thin films with self-assembled monolayers of alkanethiols.
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DOI：
10.1021/la402455x
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发表时间：
2013-10-29
期刊：
影响因子：
--
通讯作者：
Aslan K
中科院分区：
文献类型：
--
作者：
Grell TA;Alabanza AM;Gaskell K;Aslan K
报道了一种利用微波加热在金薄膜表面快速形成硫醇自组装单分子膜的方法。在这方面，使用选择性微波加热，以1）半连续和2）连续方式并在室温下（24小时，对照实验，无微波加热），在金薄膜上成功地形成了两种模型烷硫醇11-巯基十一烷酸（11-MUDA，以产生亲水表面）和十一烷硫醇（UDET，疏水表面）的SAM。通过接触角测量、傅里叶变换红外光谱（FT-IR）和X射线光电子能谱（XPS）证实了11-MUDA和UDET自组装膜的形成。水对通过选择性微波加热和常规室温孵育技术（24小时）形成的SAM的接触角被测量为对于11-MUDA和UDET是相似的。红外光谱分析结果表明，微波加热法和室温下制备的自组装膜的内部结构相似。XPS结果表明，在裸金薄膜上发现的有机物和硫酸盐污染物被替换为SAM后，表面改性过程进行微波加热和在室温下。
A rapid surface modification technique for the formation of self-assembled monolayers (SAMs) of alkanethiols on gold thin films using microwave heating in less than 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 semi-continuous and 2) a continuous fashion and at room temperature (24 hours, control experiment, no microwave heating). The formation of SAMs of 11-MUDA and UDET were 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 hours) were measured to be similar for 11-MUDA and UDET. FT-IR spectroscopy results confirmed that the internal structure of SAMs prepared using both microwave heating and at 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 was carried out using both microwave heating and at room temperature.
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DOI：
10.1007/978-1-61779-373-8_13
发表时间：
2012-01-01
期刊：
CARBOHYDRATE MICROARRAYS: METHODS AND PROTOCOLS
影响因子：
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作者：
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