Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 노재근 | - |
dc.date.accessioned | 2022-04-26T02:15:23Z | - |
dc.date.available | 2022-04-26T02:15:23Z | - |
dc.date.issued | 2020-08 | - |
dc.identifier.citation | THIN SOLID FILMS, v. 707, article no. 138100 | en_US |
dc.identifier.issn | 0040-6090 | - |
dc.identifier.issn | 1879-2731 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0040609020303114?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/170278 | - |
dc.description.abstract | To understand headgroup effects on phase behaviors of self-assembled monolayers (SAMs) prepared by coadsorption of octanethiol [OT, CH3(CH2)(7)-SH] and octyl thiocyanate [OTC, CH3(CH2)(7)-SCN] on Au(111) as a function of the OT:OTC molar concentration ratio, we investigated the surface structures of the resulting SAMs formed in 1 mM ethanol solutions at 50 degrees C for 24 h using scanning tunneling microscopy (STM). The STM study showed that the single-component OT SAMs were composed of an ordered c(4 x 2) phase, whereas singlecomponent OTC SAMs had a binary phase consisting of a disordered phase and a striped phase with a distance of 1.3 +/- 0.1 nm between rows. The fully covered c(4x2) phase on Au(111) formed by OT molecules was observed even a molar concentration ratio of OT is equal to OTC (50:50) or is much lower than OTC (10:90). The partially covered striped phase formed by OTC molecules was observed when the molar concentration ratios of OTC were much higher than OT (OT:OTC = 5:95 or OT:OTC = 1:99). Molecular-scale STM results clearly reveal the phase transitions of SAMs on Au(111) via coadsorption of OT and OTC depending on OT:OTC molar ratio. These results will help advance understanding of SAM formation and phase behavior on Au(111) by the coadsorption of alkanethiol and alkyl thiocyanates. | en_US |
dc.description.sponsorship | This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education Korea (NRF-2012R1A6A1029029 and NRF-2018R1D1A1B07048063). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCIENCE SA | en_US |
dc.subject | Octanethiol | en_US |
dc.subject | Octyl thiocyanate | en_US |
dc.subject | Coadsorption | en_US |
dc.subject | Self-assembled monolayers | en_US |
dc.subject | Phase behavior | en_US |
dc.subject | c(4 × 2) phase | en_US |
dc.subject | Striped phase | en_US |
dc.subject | Scanning tunneling microscopy | en_US |
dc.title | Scanning tunneling microscopy study on phase behavior of self-assembled monolayers formed by coadsorption of octanethiol and octyl thiocyanate on Au(111) | en_US |
dc.type | Article | en_US |
dc.relation.no | 138100 | - |
dc.relation.volume | 707 | - |
dc.identifier.doi | 10.1016/j.tsf.2020.138100 | - |
dc.relation.page | 1-5 | - |
dc.relation.journal | THIN SOLID FILMS | - |
dc.contributor.googleauthor | Choi, Youngsik | - |
dc.contributor.googleauthor | Seong, Sicheon | - |
dc.contributor.googleauthor | Han, Seulki | - |
dc.contributor.googleauthor | Son, Young Ji | - |
dc.contributor.googleauthor | Mondarte, Evan Angelo Quimada | - |
dc.contributor.googleauthor | Tahara, Hiroyuki | - |
dc.contributor.googleauthor | Song, Subin | - |
dc.contributor.googleauthor | Hayashi, Tomohiro | - |
dc.contributor.googleauthor | Noh, Jaegeun | - |
dc.relation.code | 2020048030 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | jgnoh | - |
dc.identifier.orcid | https://orcid.org/0000-0002-6115-7971 | - |
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