Molecular Electronics of Self-Assembled Monolayers

Xintai Wang

Abstract

This thesis deals withmolecular electronic investigations on self-assembledmonolayers. The thesis is divided into seven chapters, as outlined below.Chapter 1 is a general introduction of the history of molecular electronics and its current state.Chapter 2 is separated into three parts. Part I providesa brief introduction toself-assembledmonolayers(SAMs), includingits structure, formation, and its role in molecular electronic investigations. Part II is an introduction of different molecular functions, which are interesting for designing real devices. Part III is an introduction of a novel carbon material: graphene, and how such material can be incorporated intothe field of molecular electronics.Chapter 3 is a brief introduction of important instruments used in this thesis.Chapter 4, 5 and 6 describe the major experimental work in this thesis. Chapter 4 introduces two novel anchoring-groups for forming self-assembledmonolayersongold substrates:Triazatriangulenium (TATA) and dithiocarbamate (DTC). The chaptercompares theanchoring and electron transport propertiesof these groupswith thiol anchored SAMs (which is most commonly used at the current stage). Chapter 5 introduces some novel molecules with voltage triggering functions, includesthe triggering by bias voltage and electrochemical gate. Chapter 6 introduces some method thatcould enhance the reliability of data obtained from different molecular electronic measurement techniques.Chapter 7 gives a brief summary of this thesis and tentatively point out the perspectives of molecular electronics.
Original languageEnglish
PublisherDepartment of Chemistry, Faculty of Science, University of Copenhagen
Number of pages214
Publication statusPublished - 2015

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