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Effect Of Ascorbic Acid On CdTe Quantum Dots And Investigation Of Different Chemical Sensors On CdTeHg Quantum Dots

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Effect Of Ascorbic Acid On CdTe Quantum Dots And Investigation Of Different Chemical Sensors On CdTeHg Quantum Dots

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dc.contributor.author Chitrala, Yamini en_US
dc.date.accessioned 2012-07-25T19:23:08Z
dc.date.available 2012-07-25T19:23:08Z
dc.date.issued 2012-07-25
dc.date.submitted January 2012 en_US
dc.identifier.other DISS-11710 en_US
dc.identifier.uri http://hdl.handle.net/10106/11166
dc.description.abstract The objective of my thesis is to investigate the effect of ascorbic acid on CdTe quantum dots, which is an antioxidant. It was observed that the quantum dots recovered their luminescence intensity after the interaction of the ascorbic acid, where the intensity was quenched by the photosensitizer. The luminescence intensity increased gradually for 0.1mM- 0.5mM concentration of ascorbic acid and remained stable with higher concentrations of the antioxidant. Also, it was observed that under some reaction conditions like pH, temperature and concentration, ascorbic acid had a great influence on its photoluminescence. In the second part of the research project, I studied the influence of different chemicals on the luminescence intensity of CdTeHg (NIR) quantum dots. The interaction of certain chemical agents like bleach, dimethyl methyl phosphonate (DMMP), with these quantum dots had quenching effect on the luminescence intensity, whereas with the common background chemicals like ethanol could not quench the luminescence intensity of the quantum dots. Studies were carried out to find out the reasons behind this quenching and whether it is the singlet oxygen generated by these chemicals. en_US
dc.description.sponsorship Chen, Wei en_US
dc.language.iso en en_US
dc.publisher Biomedical Engineering en_US
dc.title Effect Of Ascorbic Acid On CdTe Quantum Dots And Investigation Of Different Chemical Sensors On CdTeHg Quantum Dots en_US
dc.type M.Engr. en_US
dc.contributor.committeeChair Chen, Wei en_US
dc.degree.department Biomedical Engineering en_US
dc.degree.discipline Biomedical Engineering en_US
dc.degree.grantor University of Texas at Arlington en_US
dc.degree.level masters en_US
dc.degree.name M.Engr. en_US

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