Abstract
The effects of silver antigalvanic reduction (Ag AGR) on the structure of alkanethiol self-assembled monolayers (SAMs) on gold with regard to the ordered structure and surface coverage were studied using electrochemical methods. In this paper, we report the structure changes as well as the chemical lift-off lithography (CLL) performance of SAMs dependent on chain lengths, namely, 1-butanethiol, 6-mercapto-1-hexanol, and 11-mercapto-1-undecanol. Cyclic voltammetry of the redox probe and linear sweep voltammetry of the reductive desorption demonstrated that the structure of SAMs with Ag AGR pretreatment are more ordered, resulting from higher surface coverage and stronger molecular interaction. Meanwhile, the influence of Ag AGR on the CLL efficiency behaved differently depending on the SAM chain lengths in both electrochemistry and AFM imaging. In general, the formation of alkanethiol SAMs on Ag AGR/Au has enabled a facile method, which possesses a great potential on the quality control of the SAMs system.
| Original language | English |
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| Pages (from-to) | 16070-16078 |
| Number of pages | 9 |
| Journal | Journal of Physical Chemistry C |
| Volume | 122 |
| Issue number | 28 |
| DOIs | |
| Publication status | Published - 19 Jul 2018 |
| MoE publication type | A1 Journal article-refereed |
Funding
S.H. acknowledges the support from the Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (No. NRF-2017R1A2B4012056, NRF-2014R1A2A1A11053268) and by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. NRF-2014R1A6A1030732). This Research also has been performed as a cooperation project of “Basic project (referring to projects performed with the budget directly contributed by the Government to achieve the purposes of establishment of Government-funded research Institutes)” and supported by the KOREA RESEARCH INSTITUTE of CHEMICAL TECHNOLOGY (KRICT).