Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.colsurfa.2011.09.019
DC FieldValue
dc.titleSynthesis of short chain thiol capped gold nanoparticles, their stabilization and immobilization on silicon surface
dc.contributor.authorGupta, R.K.
dc.contributor.authorSrinivasan, M.P.
dc.contributor.authorDharmarajan, R.
dc.date.accessioned2014-10-09T07:03:30Z
dc.date.available2014-10-09T07:03:30Z
dc.date.issued2011-10-20
dc.identifier.citationGupta, R.K., Srinivasan, M.P., Dharmarajan, R. (2011-10-20). Synthesis of short chain thiol capped gold nanoparticles, their stabilization and immobilization on silicon surface. Colloids and Surfaces A: Physicochemical and Engineering Aspects 390 (1-3) : 149-156. ScholarBank@NUS Repository. https://doi.org/10.1016/j.colsurfa.2011.09.019
dc.identifier.issn09277757
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/90283
dc.description.abstractTethering between nanoparticles and a supporting substrate, especially in the form of covalent bonding, is a highly useful way of ensuring development of robust systems for various applications. This requires bestowing specific functionalities on nanoparticle surfaces that can also prevent aggregation between nanoparticles. In this work, short chain thiol (4-aminothiophenol)-capped gold nanoparticles functionalized with amine-termination have been synthesized and changes in their morphology by varying the process conditions as well as the dispersion medium were studied. Subsequently, the nanoparticles (which are prone to agglomerate due to amine-amine hydrogen bonding), were stabilized in solution and by anhydride capping. Finally, these stabilized nanoparticles were immobilized on a SiO2 substrate. X-ray photoelectron spectroscopy (XPS) confirmed the absence of non-reacted thiol groups in the synthesized nanoparticles and presence of nanoparticles on the Si surface after the immobilization process. Transmission electron microscope (TEM) and UV-visible spectroscopy have been used to study particle morphology. Cross-sectional HR-TEM images show direct evidence that the particles are anchored to the silicon surface. © 2011 Elsevier B.V.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.colsurfa.2011.09.019
dc.sourceScopus
dc.subjectCovalent assembly
dc.subjectFunctionalization
dc.subjectGold nanoparticles
dc.subjectImmobilization
dc.subjectStability
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1016/j.colsurfa.2011.09.019
dc.description.sourcetitleColloids and Surfaces A: Physicochemical and Engineering Aspects
dc.description.volume390
dc.description.issue1-3
dc.description.page149-156
dc.description.codenCPEAE
dc.identifier.isiut000297960400019
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