Striped Phase of 3-Hexylthiophene Self-Assembled Monolayers on Au(111) Formed by Vapor Phase Deposition
- Authors
- Kim, Youngwoo; Kang, Hungu; Tsunoi, Azuho; Hayashi, Tomohiro; Hara, Masahiko; Noh, Jaegeun
- Issue Date
- Mar-2016
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- 3-Hexylthiophene; Self-Assembled Monolayers; Striped Phase; Scanning Tunneling Microscopy; Cyclic Voltammetry
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.16, no.3, pp.2792 - 2795
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 16
- Number
- 3
- Start Page
- 2792
- End Page
- 2795
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155024
- DOI
- 10.1166/jnn.2016.11097
- ISSN
- 1533-4880
- Abstract
- The formation and surface structure of 3-hexylthiophene (HTP) self-assembled monolayers (SAMs) on Au(111) prepared by solution and ambient-pressure vapor deposition at room temperature (RT) for 24 h were examined by means of scanning tunneling microscopy (STM) and cyclic voltammetry (CV). STM imaging revealed that HTP SAMs formed by solution deposition have a disordered phase, whereas those formed by vapor deposition exhibit a striped phase with a unidirectional orientation. The distance between the rows in the striped phase was measured to be 1.3 +/- 0.1 nm, and the hexyl molecular backbones of HTP in the SAMs on Au(111) are oriented parallel to the Au(111) surface with the head-to-head orientation. From this STM observation, we suggest that the formation of this striped phase in HTP SAMs prepared by vapor deposition were mainly driven by the optimization of van der Waals interactions between the hexyl chains on the surface. CV measurements also demonstrated that HTP SAMs show a high blocking efficiency for electron transfer reactions between electrolytes and the gold electrode, suggesting the formation of SAMs on Au(111) from the vapor phase. Our results obtained here will be very useful for understanding the formation and structure of HTP SAMs on Au(111) surfaces and how they are influenced by deposition method.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 서울 자연과학대학 > 서울 화학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155024)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.