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Synthesis of azide- and alkyne-terminated alkane thiols and evaluation of their application in Huisgen 1,3-dipolar cycloaddition ("click") reactions on gold surfaces
Linköping University, Department of Physics, Chemistry and Biology.
2009 (English)Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
Abstract [en]

Immobilization of different bio- and organic molecules on solid supports is fundamental within many areas of science. Sometimes, it is desirable to obtain a directed orientation of the molecule in the immobilized state. In this thesis, the copper (I) catalyzed Huisgen 1,3-dipolar cycloaddition, referred to as a “click chemistry” reaction, was explored as a means to perform directed immobilization of small molecule ligands on gold surfaces. The aim was to synthesize alkyne- and azide-terminated alkanethiols that would form well-organized self assembled monolayers (SAMs) on gold from the commercially available substances orthoethylene glycol and bromo alkanoic acid. N-(23-azido-3,6,9,12,15,18,21-heptaoxatricosyl)-n-mercaptododekanamide/hexadecaneamide (n = 12, 16) were successfully synthesized and allowed to form SAMs of different compositions to study how the differences in density of the functional groups on the surface would influence the structure of the monolayer and the click chemistry reaction. The surfaces were characterized by different optical methods: ellipsometry, contact angle goniometry and infrared reflection-absorption spectroscopy (IRAS). The click reaction was found to proceed at very high yields on all investigated surfaces. Finally, the biomolecular interaction between a ligand immobilized by click chemistry on the gold surfaces and a model protein (bovine carbonic anhydrase) was demonstrated by surface plasmon resonance using a Biacore system.

Place, publisher, year, edition, pages
2009. , 51 p.
Keyword [en]
Self-Assembled monolayers, Click Chemistry, Infrared Reflection-Absorption Spectroscopy, Surface Plasmon Resonance
National Category
Organic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-20559ISRN: LITH-IFM-A-EX--09/2069--SEOAI: oai:DiVA.org:liu-20559DiVA: diva2:235106
Presentation
2009-06-04, 00:00 (English)
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2009-09-15 Created: 2009-09-13 Last updated: 2009-09-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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Output format
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