Investigation of the Emission Properties of Quantum Dot-thermoresponsive Polymer Nanocomposite Hydrogels with Temperature

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dc.contributorMeissner, Kenith E.
dc.contributorFink, Rainer
dc.creatorJuriani, Ameet Rajkumar
dc.date.accessioned2011-08-08T22:47:50Z
dc.date.accessioned2011-08-09T01:33:42Z
dc.date.accessioned2017-04-07T19:58:29Z
dc.date.available2011-08-08T22:47:50Z
dc.date.available2011-08-09T01:33:42Z
dc.date.available2017-04-07T19:58:29Z
dc.date.created2010-05
dc.date.issued2011-08-08
dc.description.abstractThis thesis presents a novel method for the preparation of quantum dot-thermoresponsive polymer nanocomposite hydrogels. The quantum dots (QD?s) were synthesized in a microwave reactor using a high temperature organometallic synthesis procedure. The initial hydrophobic surface layer on the QD?s was coated with an amphiphilic polymer to enable phase transfer from non-polar solvent to water followed by physical immobilization of the QD?s in the thermoresponsive polymer hydrogel by photopolymerization. Their temperature dependent emission properties were investigated as a function of concentration of the incorporated QD?s. The resultant temperature dependent changes in the position of the peak emission wavelength of the QD-polymer nanocomposite hydrogels were found to be due to the change in the physical environment causing increased interaction between the embedded amphiphilic polymer coated QD?s and/or due to aggregation of QD?s. This change in peak emission position was found to be reversible in the temperature range from 29 to 37 ?C.
dc.identifier.urihttp://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7813
dc.language.isoen_US
dc.subjectQuantum dots
dc.subjectThermoresponsive polymer
dc.subjectPoly(N-isopropylacrylamide)
dc.subjectPolyethylenemine
dc.titleInvestigation of the Emission Properties of Quantum Dot-thermoresponsive Polymer Nanocomposite Hydrogels with Temperature
dc.typeThesis

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