Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"polyglycerol"”.
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Hyperbranched polyglycerol surfactants: a modular approach
… and medical applications. Hyperbranched polyglycerols (HPGs) have been employed as a nonionic hydrophilic material with high salt stability. In this work the HPG scaffold has been used to develop a series of different surfactants for use in industrial applications. A series of HPG …
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Synthesis and applications of core functional hyperbranched polyglycerol
… of a new alkyne core functional hyperbranched polyglycerol and describes their use as potential monomolecular imprinting materials and increasing the photostability of fluorescent dyes. The first chapter describes two methods for the synthesis of the polymers and its formal [3+2] cycloaddition …
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Cross-Linked Polybenzyl Ether and Polyglycerol Dendrimers for Monomolecular Imprinting
Dendrimers containing a glycoside core were synthesized by direct coupling of a acid chloride dendron to a glycoside or by attachment of an azide dendron to a core containing alkyne groups using copper-catalyzed 1,3-dipolar cycloaddition. The glycoside dendrimers displayed chiral activity that …
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Part I. The Synthesis and Study of Luminescent Polyglycerol Dendrimers. Part II. Adenine Receptors With Simultaneous Watson-Crick and Hoogsteen Binding
"Part II discusses efforts to synthesize receptors that employ hydrogen bonds to both the Hoogsteen and Watson-Crick faces of adenine as a means of enhancing the molecular recognition of this important biomolecule. A number of design approaches were carried out to ""clamp"" the exocyclic amine …
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Polymeric nanocarriers with dendritic core-shell architectures
Hyperbranched polymers, polyglycerol and polyethylenimine, were functionalised in order to tailor systems that can be used in medical applications. The systems described in this thesis can be used for pH controlled release of drug molecules and were also investigated towards their gene transfection …
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Hyperbranched polymers and Haag type dendrimers for the molecular imprinting of polymers
… polymer was synthesized using both hyperbranched polyglycerol and Haag type polyether dendrons with estradiol as a core. The attachment of the polyether dendron created a dendrimer that had 64 allyl groups available for crosslinking. Completion of the crosslinking of the dendrimer resulted in a …
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Combinatorics and Modelling of Highly Branched Polymers
… novel synthetic dendrimer of interest (dendritic Polyglycerol Amine).
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Colloidal properties of sugar particle dispersions in food oils with relevance to chocolate processing
… soya lecithin (phosphatidylcholine), polyglycerol polyricinoleate (PGPR) or monoolein, were used to alter the interactions between the hydrophilic sugar particles. In a dispersion of 70 wt% sugar and 0.3% of lecithin, approximately 30-40% of the emulsifier present was found to be …
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Polymer-mediated assembly of MRI contrast agents and their use in imaging of vascular defects
… Chapter 4 explores the use of hyperbranched polyglycerol (HPG) in assembling SPIONs in the form of spherical clusters. By controlling the cluster size and molecular architecture of the polymer coating, optimal relaxivity of the SPIONs was achieved for sensitive imaging. In Chapter 5, the …
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Synthesis and application of biomaterials containing the 1,3,5-triazaadamantane moiety or functionalized alginate
… with propargyl alcohol initiated hyperbranched polyglycerol rendered the compounds water soluble creating nanomaterials capable of encapsulating and releasing small molecule guests. Water soluble TAA cross-linkers were used to make degradable hydrogels by performing photo initiated …
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Subcutaneous and oral delivery of insulin
… oleic acid, PEG-8 caprylic/capric glycerides and polyglycerol-6-dioleate. The blood glucose levels were measured using a blood glucose meter. The results revealed that the extent of hypoglycemic activity of SC insulin was GlcN⋅HCl dose dependent when they were administered simultaneously. A …
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Impact of emulsifiers on physical, sensory, and microstructural properties in formulated dark chocolate with an innovative educational approach
… were used in this study: soy lecithin, polyglycerol polyricinoleate (PGPR), and ammonium phosphatide. Chocolate was formulated with 0.2% or 0.5% emulsifier, conched/refined, tempered, and molded in the laboratory. Sample storage treatments included temperature cycling and long term …
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Dual Delivery Systems Based On Polyamine Analog Benspm As Prodrug And Gene Delivery Vectors
… improved linker stability, we employed dendritic polyglycerol (PG) as a safe carrier backbone, onto which BENSpm was conjugated through carbamate linkage (PG-BEN). Polymers with norspermine (PG-Nor) shell and amine-terminated PG (PG-NH2) were synthesized as controls. The BENSpm dual vector PG-BEN …
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Hyperverzweigte Polyelektrolyte als Träger für lösliche, recycelbare Homogenkatalysatoren
Im Rahmen der vorliegenden Arbeit wurde die Mikroheterogenisierung von Homogenkatalysatoren durch ionische Anbindung an lösliche, makromolekulare Träger am Beispiel eines Rhodiumkatalysators untersucht. Als Träger wurden Polykationen mit Pyridinium- bzw. 1,2-Dimethylimidazoliumgruppen verwendet, …