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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 17 of 17 for “"supramolecular polymer"”.
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Efficient Syntheses of Strong Binding Cryptands and their Derivatives for Supramolecular Polymer Synthesis
… of bipyridinium guests to produce suprapolymers and supramolecularly-linked block copolymers. Cryptands based on bis(meta-phenylene)-32-crown-10 (BMP32C10) were synthesized. The functionality of phenylenemethanol-BMP32C10 cryptand III-3 (Ka = 2.0 x 104 M-1) did not negatively affect …
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Supramolecular polymer additives to improve the crystallization behavior and optical properties of polybutylene terephthalate and polyamides
… the property profile of commercial thermoplastic polymers. The physico chemical properties of semi crystalline polymers depend to a large extend on the crystal structure and spherulite size, which can be controlled by nucleating agents. These additives can increase the crystallization temperature …
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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, …
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Cucurbit[n]uril-based colloidal self-assembly in hybrid polymeric systems
Supramolecular interactions are of great importance in the fabrication of new functional materials. In particular, colloidal assembly via supramolecular pathway has contributed to numerous innovations in material chemistry, on account of its specific, directional and dynamic non-covalent …
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Responsive molecules: 1. Redox-responsive quadruple hydrogen bonding unit 2. Crosslinked dendronized polyols for brighter and more stable dyes 3. Photoresponsive proton gate for cross-membrane transfer
… switch was successfully applied to tune supramolecular polymer blends (Scheme 0.1). In Chapter 3, we developed a scalable and general synthetic approach to solubilize and stabilize different classes of organic fluorophores, which may be useful in bioimaging. The crosslinked dendronized …
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Supramolecular Functional Materials Based on Cucurbit[8]uril-Enhanced π–π Interactions
… are further exploited in the fabrication of supramolecular polymer networks in Chapter 5. Through careful selection of the second π-rich guest, the association and dissociation of the network are controlled to realise slow dissociation dynamics which result in glass-like properties being …
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Supramolecular hybrid organic-inorganic multicomponent architectures in solution and on surface
Supramolecular architectures can be built-up from a single molecular component (building block) to obtain a complex of organic or inorganic interactions creating a new emergent condensed phase of matter, such as gels, liquid crystals and solid crystal. Further the generation of multicomponent …
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Control of Network Topology in Photopolymer Networks for Additive Manufacturing
… is placed on work done to regulate free radical polymerization via addition-fragmentation chain transfer (AFCT) and reversible addition-fragmentation chain transfer (RAFT), and their applications in photopolymer networks to improve material properties and introduce novel functional materials to …
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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 …
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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 …
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Part I - Access to UV photocured nanostructures via selective morphological trapping of block copolymer melts. Part II - Morphological phase behavior of poly(RTIL) containing block copolymer melts
… for high fidelity translation of block copolymer based melt-state morphologies into their equivalent solid analogs. Cationic photoacids were combined with partially epoxidized polyisoprene-b-poly(ethylene oxide) (PI-PEO) block copolymers, forming composite blends that allow for extended …
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Multiscale Molecular Modelling and Advanced Simulations of Dynamic Supramolecular Systems
L'abstract è presente nell'allegato / the abstract is in the attachment
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Host-Guest Systems Based on Crown Ether, Cryptand, and Pseudocryptand Hosts with Paraquat, Diquat, Secondary Ammonium, and Monopyridinium Salt Guests
Supramolecular host-guest chemistry is a topic of great current interest. However, the further development of host-guest chemistry is still limited by the number of available host-guest recognition motifs. This makes it necessary and valuable to find new host-guest recognition motifs and apply …
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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 …
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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 …
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Functional Supramolecular Hydrogels Mediated by Host-Guest Chemistry
… behind their formation of inclusion complexes. Polymeric hydrogels are then discussed with regards to both their classification and characterisation techniques. Next, hostguest mediated hydrogels are examined and several CD- and CB[n]-based materials are highlighted. Furthermore, the concept of …