Date of Graduation

Summer 2012

Degree

Master of Science in Chemistry

Department

Chemistry

Committee Chair

Reza Herati

Keywords

dendrimers, PEGylation, linear dendritic copolymers, PEG, critical micelle concentration, nuclear magnetic resonance, fluorescence spectroscopy

Subject Categories

Chemistry

Abstract

In this work a mPEG(5000) block poly(ether sulfide) dendrimer was functionalized with glutathione, cysteamine, methyl 3-mercaptopropionate, ethylene diamine, 5-hydroxy-2-phenyl-[1,3]-dioxane, and 5-methyl-2-(2,4,6-trimethoxyphenyl)-[1,3]-5-dioxanylmethanol. The derivatives were characterized using NMR and the critical micelle concentration of several derivatives was measured using fluorescence spectroscopy using pyrene. The degradation of 5-hydroxy-2-phenyl-[1,3]-dioxane, and 5-methyl-2-(2,4,6-trimethoxyphenyl)-[1,3]-5-dioxanylmethanol was monitored by measuring the release of encapsulated Nile red dye using fluorescence spectroscopy at pH 5.0 and 7.4. An mPEG (5000) block poly(amino sulfide) dendrimer was synthesized using thiol-ene and epoxy-amine click chemistry and characterized using NMR. The starting materials used were cysteamine hydrochloride, allyl glycidyl ether and mPEG-NH2.

Copyright

© Jacob Michael Robison

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