Adsorption and thermal decomposition of 2-octylthieno[3,4-b]thiophene on Au(111)
- Authors
- Park, Joon B.; Zong, Kyukwan; Jeon, Il Chul; Hahn, Jae Ryang; Stacchiola, Dario; Starr, David; Mueller, Kathrin; Noh, Jaegeun
- Issue Date
- Oct-2012
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Keywords
- 2-Octylthieno[3,4-b]thiophene; Adsorption; Dissociation; Scanning tunneling microscopy; X-ray photoelectron spectroscopy; Temperature programmed desorption
- Citation
- JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.384, no.1, pp.143 - 148
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF COLLOID AND INTERFACE SCIENCE
- Volume
- 384
- Number
- 1
- Start Page
- 143
- End Page
- 148
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144708
- DOI
- 10.1016/j.jcis.2012.06.020
- ISSN
- 0021-9797
- Abstract
- The adsorption and thermal stability of 2-octylthieno[3,4-b]thiophene (OTTP) on the Au(1 1 1) surfaces have been studied using scanning tunneling microscopy (STM), temperature programmed desorption (TPD), and X-ray photoelectron spectroscopy (XPS). UHV-STM studies revealed that the vapor-deposited OTTP on Au(1 1 1) generated disordered adlayers with monolayer thickness even at saturation coverage. XPS and TPD studies indicated that OTTP molecules on Au(1 1 1) are stable up to 4501< and further heating of the sample resulted in thermal decomposition to produce H-2 and H2S via C-S bond scission in the thieno-thiophene rings. Dehydrogenation continues to occur above 600 K and the molecules were ultimately transformed to carbon clusters at 900 K. Highly resolved air-STM images showed that OTTP adlayers on Au(1 1 1) prepared from solution are composed of a well-ordered and low-coverage phase where the molecules lie flat on the surface, which can be assigned as a (9 x 2 root 33)R5 degrees structure. Finally, based on analysis of STM, TPD, and XPS results, we propose a thermal decomposition mechanism of OTTP on Au(1 1 1) as a function of annealing temperature.
- Files in This Item
-
Go to Link
- 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/144708)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.