Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/16026
Title: Adsorption of some carbonyl and related compounds on Si(111)-7x7 surface
Authors: NING YUESHENG
Keywords: Si(111) surface; cycloaddition; radical; ene reaction; HREELS; XPS
Issue Date: 22-Jul-2008
Source: NING YUESHENG (2008-07-22). Adsorption of some carbonyl and related compounds on Si(111)-7x7 surface. ScholarBank@NUS Repository.
Abstract: The adsorption of some carbonyl (acetaldehyde, acetone, p-benzoquinone) and structurally related compounds (propargyl chloride, isopropyl isocyanide) on Si(111)-7C 7 was investigated by combining experimental (High-Resolution Electron Energy Loss Spectroscopy, HREELS; X-ray Photoelectron spectroscopy, XPS) and theoretical (Density Functional Theory, DFT) methods. Acetaldehydes were polymerized by the initiation of silicon surface dangling bonds, forming molecular chains containing ethane-1,1-dioxy blocks. Both acetone and propargyl chloride underwent an ene-like reaction, resulting in surface-bound enolate and terminal allene, respectively. p-Benzoquinone was attached to the surface by forming two Si-O covalent bonds. The binding mode was named [6+2]-like cycloaddition. Isopropyl isocyanide was adsorbed on Si(111)-7C 7 in two end-on configurations, with one bent and one linear molecular skeletons. The bent one is a radical species. Formation of donor-acceptor complexes between these two configurations were suggested by the anomalous vibrational peak shift.
URI: http://scholarbank.nus.edu.sg/handle/10635/16026
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
CoverANDContent.pdf306.99 kBAdobe PDF

OPEN

NoneView/Download
Chapter1-introduction.pdf494.06 kBAdobe PDF

OPEN

NoneView/Download
Chapter2-methodology.pdf507.01 kBAdobe PDF

OPEN

NoneView/Download
Chapter3-acetone.pdf703.63 kBAdobe PDF

OPEN

NoneView/Download
Chapter4-propargyl chloride.pdf369.79 kBAdobe PDF

OPEN

NoneView/Download
Chapter5-acetaldehyde.pdf374.1 kBAdobe PDF

OPEN

NoneView/Download
Chapter6-p-benzoquinone.pdf543.99 kBAdobe PDF

OPEN

NoneView/Download
Chapter7-isocyanide.pdf417.58 kBAdobe PDF

OPEN

NoneView/Download
Chapter8-conclusions.pdf74.84 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

311
checked on Dec 11, 2017

Download(s)

1,876
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.