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.
Results
Showing 1 to 19 of 19 for “"Supramolecular polymers"”.
-
Synthesis and Characterization of Cation-Containing and Hydrogen Bonding Supramolecular Polymers
… aggregation were studied in block and random polymers synthesized using controlled radical polymerization techniques such as nitroxide mediated polymerization (NMP) and reversible addition-fragmentation chain transfer polymerization (RAFT). Non-covalent interactions were expected to increase …
-
Exploring Multiple Hydrogen Bonding and Ionic Bonding in the Design of Supramolecular Polymers
Supramolecular polymers represent a family of polymeric materials that are held together with dynamic, noncovalent interactions. In contrast to conventional functional polymers that usually have high melt-viscosity due to their covalent nature and chain entanglement, supramolecular polymers combine …
-
Design, Preparation and Characterization of Novel Pseudorotaxanes, Semirotaxanes, Rotaxanes, Non-Covalent Supramolecular Polymers and Polycatenanes
… and potential application. The convergence of supramolecular chemistry with polymer science provides an important way to extend the scope of polymer and material sciences by incorporating designed host/guest systems into polymers, and the resulting non-covalently linked supramolecular polymers …
-
Explorations in Supramolecular Chemistry: Part 1. Development of a Modular System for the Study of Self-Organization Through Microphase Segregation in Discotic Liquid Crystals. Part 2. Investigation of Deazapterins and Naphthyridines as End-Groups for Supramolecular Polymers
… directional hydrogen bonds for the formation of supramolecular polymers was explored. Synthetic routes toward supramolecular polymer end-groups based upon the 2-amino-5-deazapterin and 2,7-diamino-[1,8]-naphthyridine ring systems were pursued. While it was found that the end-groups could be made, …
-
Visible light-induced pH control and its applications
… influence the properties of different types of supramolecular polymers. The challenges of applying merocyanine photoacids to generate structural changes of supramolecular polymers by influencing the components protonation state are highlighted. Chapter 6 presents brief conclusions and a future …
-
NEW MULTIMETALLIC ASSEMBLIES AS PHOTOLUMINESCENT MATERIALS
… progress has been made in the area of supramolecular polymers, where monomers are held together by non-covalent interactions. In particular, the formation of macromolecular assemblies by employing a metal-ion induced selfassembly process in solution is of significant interest. These …
-
Dibenzo-30-crown-10: Synthetic optimization and studies of the binding conformation
… host-guest chemistry as a discipline within supramolecular chemistry. Crown ethers form complex molecules containing organic cations and neutral organic molecules. Additionally, they form components in supramolecular architectures such as catenanes, rotaxanes, and supramolecular polymers. …
-
Bio-inspired Design and Self-Assembly of Nucleobase- and Ion-Containing Polymers
… nucleobase or ionic group allowed synthesis of supramolecular polymers using free radical polymerization and controlled radical polymerization techniques. Comprehensive investigations for the structure-property-morphology relationships of these supramolecular polymers elucidated the effect of …
-
Synthesis, Characterization, Properties and Computational Studies of Linear Boronate Diester-Linked Materials
… and enhanced stability compared to conventional supramolecular polymers. Herein, we report on the synthesis, characterization, computational and property studies of boronate diesters based on fluorene boronic acid. These compounds exhibited tunable electronic properties with the incorporation of …
-
Metallo-Supramolecular complexes and their interactions with biomolecules and cells
Chapter 1 introduces the field of supramolecular chemistry and reviews examples of supramolecular architectures. Applications of these assemblies are outlined with a focus on DNA recognition. In chapter 2 the synthesis and characterisation of an array of palladium(II) and platinum(II) …
-
Aqueous Self-Assembly with Cucurbit[n]urils: From Solution to Emulsion
… into the core concepts underlying this thesis. Supramolecular chemistry as a broad research field is briefly reviewed, followed by a focus on host-guest chemistry. The macrocyclic cucurbit[n]urils (CB[n]s) in particular are highlighted with a discussion on their recent applications since their …
-
Design, Synthesis and Self-Assembly of Polymeric Building Blocks and Novel Ionic Liquids, Ionic Liquid-Based Polymers and Their Properties
The convergence of supramolecular and polymer sciences has led to the construction of analogs of traditional covalently-constructed polymeric structures and architectures by supramolecular methods. Host-guest complexations of polymers are also possible through well-defined synthesis of polymeric …
-
Supramolecular Assemblies: Dendrimers, Linear Arrays, and Polypseudorotaxanes
… NMR spectroscopy and mass spectrometry. Linear supramolecular pseudorotaxane polymers were formed with reversible chain extension in solution by self-assembly of two complimentary homoditopic molecules with secondary ammonium ion and dibenzo-24-crown-8 moieties. The fraction of the cyclic dimer …
-
Pseudorotaxanes and Supramolecular Polypseudorotaxanes Based on the Dibenzo-24-Crown-8/Paraquat Recognition Motif
… in this thesis focused on pseudorotaxanes and supramolecular polymers based on a new recognition motif, the dibenzo-24-crown-8/paraquat recognition motif. Main kinds of pseudorotaxanes and rotaxanes and various protocols used for the study of them were discussed first. By preparation and …
-
Synthesis and Characterization of Functional Biodegradable Polyesters
… higher for networks based on urethane containing polymers. Star-shaped PDLLAs bearing complementary adenine and thymine terminal units were also prepared. The hydrogen bonding associations between complementary PDLLA macromolecules depended strongly on molar mass and hence, the concentration of …
-
I. Functionalization and Investigation of Highly Efficient Hosts for Use in Macromolecular Self-Assemblies and II. The Design and Synthesis of ROMP Imidazolium Systems for Use as Mechanical Actuators
Recent advancements in supramolecular chemistry have given a wealth of strongly binding host-guest combinations. However, the deployment of these systems into meaningful constructs has been hindered due to difficulty of synthesis or to the lack of functionality in one or both components. Systems …
-
Self-assembly of synthetic and biological components in water using cucurbit[8]uril
… from the fields of synthetic organic chemistry, supramolecular self-assembly, and applied NMR techniques. Chapter 1 introduces the reader to chemical complexity, and how supramolecular chemists have advanced in their capability of assembling more complex molecular architectures. The discussion …
-
Development of self-healing techniques for fiber reinforced composites
… defects deep inside the material. Self-healing polymers is an approach which has not yet been incorporated to commercial composites but promises to face some principal weak points. This smart technology aims to in-situ repair matrix cracks and matrix/reinforcement debonding and thus to extend …
-
Samo-asocjacja nowych oligomerów i polimerów supramolekularnych na bazie sfunkcjonalizowanych aminokwasami platform organicznych
Rozprawa doktorska zatytułowana „Samo-asocjacja nowych oligomerów i polimerów supramolekularnych na bazie sfunkcjonalizowanych aminokwasami platform organicznych” obejmuje cykl trzech publikacji prezentujących nowe układy oparte na oddziaływaniach niekowalencyjnych. Pierwsza z prac przedstawia …