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Structural analysis of self‐assembled monolayers on Au(111) and point defects on HOPG

Gao, Jianzhi (2013)
Ph.D. thesis, University of Birmingham.

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Abstract

In this thesis, I report findings from two projects conducted from Oct. 2009 to Dec. 2012. The first project involves the structural analysis of short-chain alkanethiol self-assembled monolayers (SAMs) on Au(111). Methanethiol, ethanethiol, propanethiol, and methyl-propanethiol monolayers are prepared on the Au(111) surface using vapour deposition. The SAMs are imaged using scanning tunnelling microscopy (STM) and structural transformations are followed as a function of surface coverage. The second project involves the creation and detection of various types of point defects on the surface of graphite with a view to obtain controlled doping in graphene and graphene-related materials. Nitrogen and oxygen are deposited onto HOPG using two different methods. Charged N and N\(_2\) were used from an ion source and shallowly implanted into HOPG. Several types of N were found, including interstitial and substitutional N. Oxygen was deposited as atomic O from a thermal cracking source. We found oxygen bonded to surface carbon atoms in both a top and bridging configurations. We have also investigated the deposition of small PtO particles on HOPG.

Type of Work:Ph.D. thesis.
Supervisor(s):Guo, Quanmin
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Physics and Astronomy
Subjects:Q Science (General)
QC Physics
Institution:University of Birmingham
ID Code:4681
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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