Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/45674
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dc.contributor.authorChan, Kevin Jin Quan.
dc.date.accessioned2011-06-16T02:21:02Z
dc.date.available2011-06-16T02:21:02Z
dc.date.copyright2011en_US
dc.date.issued2011
dc.identifier.urihttp://hdl.handle.net/10356/45674
dc.description.abstractGold nanoparticle (AuNP) has been widely used in the biotechnology field due to its bio-inert characteristic and other unique physical qualities such as optical and electrical properties. Here, a new class of AuNP with multi-polymer brush coating, which can spontaneously assemble and disassemble under the influence of temperature, is reviewed in this report. This new class of AuNP coated with hydrophilic and hydrophobic multi-polymer brushes allows for self-assembly in temperature condition of more than 40 ̊C and disassembles in temperature condition of less than 20 ̊C in an oil-water interface. Poly(N-isopropylacrylamide) (PNIPAM) coated AuNP surface provided temperature responsive property with a lower Critical Solution Temperature (LCST) of around 32 ̊C. At temperature around LCST, the AuNP solution undergo reversible phase transition from homogenous solution to precipitation of insoluble AuNP forming a 2D array self-assembly layer at the oil-water interface. i This amphiphilic AuNP with multi-polymer brushes were synthesized by means of a two-step process, “grafting to” (ligand exchange) and “grafting from” (surface initiated atom transfer radical polymerization) reactions. Such combination of surface reaction, allow high customizability on the surface of AuNP that give contrasting properties between different combinations of well-defined surface polymer brushes. Under this two-step process, we are able to synthesize well-defined multi-polymer brush coated AuNP, displaying highly reversible 2-D array self-assembly characteristic under differentiated ambient temperature in oil-water interface platform. The synthesized, temperature sensitive, AuNP has shown stability and repeatability in our research which opens opportunities for developing hybrid materials with collective and integrated functionalities suitable for employment in biomedical field that require biological inert property.en_US
dc.format.extent47 p.en_US
dc.language.isoenen_US
dc.rightsNanyang Technological University
dc.subjectDRNTU::Engineering::Materials::Nanostructured materialsen_US
dc.subjectDRNTU::Engineering::Nanotechnology
dc.titleTemperature responsive plasmonic assembles of amphiphilic nanoparticles at oil-water interfaces.en_US
dc.typeFinal Year Project (FYP)en_US
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen_US
dc.description.degreeBachelor of Engineering (Chemical and Biomolecular Engineering)en_US
dc.contributor.supervisor2Duan Hongweien_US
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Appears in Collections:SCBE Student Reports (FYP/IA/PA/PI)
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