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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 11 of 11 for “"liquid crystallinity"”.
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Liquid crystallinity and alignment of ionic self-assembly complexes
In this work the first observation of new type of liquid crystals is presented. This is ionic self-assembly (ISA) liquid crystals formed by introduction of oppositely charged ions between different low molecular tectonic units. As practically all conventional liquid crystals consist of rigid core …
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Designing Functionality into Step-Growth Polymers from Liquid Crystallinity to Additive Manufacturing
… mesogenic monomer due to its ability to impart a liquid crystalline (LC) morphology on semi-aromatic polyesters with linear aliphatic spacers. In this body of work, semi-aromatic polyesters using one of 4,4'BB's regioisomers, either 3,4'BB or 3,3'BB, largely resulted in amorphous or …
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Complexes of Platinum(II) and Iridium(III) with Liquid Crystal and Luminescent Properties
… properties, luminescence (triplet emission) and liquid crystallinity. The motivation is two-fold. One possibility is that these materials could be used as polarised back-light emitters in liquid crystal displays, which would mean that the back polariser could be removed, so improving light …
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Synthesis and surface modification of nanorods for investigation into organic-inorganic hybrid materials
… the synthesis of a new kind of giant hybrid liquid crystal consisting of organic semiconductor molecules surrounding an inorganic semiconductor with a nanorod shape with the potential for use in photovoltaic solar cells. It is intended that such materials will combine the good processing …
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Studying and controlling chromophore orientation in polyelectrolyte layer-by-layer thin films
Many properties such as electrical conductivity, liquid crystallinity, and optical properties depend on specific molecular orientation. Currently, this orientation is achieved using either inorganic crystals or rigorously processed organic materials. This thesis studied a film assembly technique …
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Synthesis and basic characteristics of segmented poly(arylene ether sulfone)-poly(arylate) copolymers
… resistance was noted. Evidence of anisotropy and liquid crystallinity in the copolymers was provided by optical microscopy, differential scanning calorimetry, and wide angle X-ray scattering.
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Epoxy + Liquid Crystalline Epoxy Coreacted Networks
… reinforcement through in-situ polymerization of liquid crystalline epoxies (LCEs) and a non-liquid crystalline epoxy has been investigated. Three LCEs: diglycidyl ether of 4,4'-dihydroxybiphenol (DGE-DHBP) and digylcidyl ether of 4-hydroxyphenyl-4"-hydroxybiphenyl-4'-carboxylate (DGE-HHC), were …
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Structure and properties of hydrogen and covalently bonded side group liquid crystalline block copolymers
Diblock copolymers incorporating liquid crystallinity via a lateral attachment of mesogenic species to a flexible backbone were studied for their microstructure-property relationships. Two families of materials were studied, distinguished primarily by the method of attachment of the mesogen to the …
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New Liquid Crystalline [2]Rotaxanes
… synthesis and characterization of a range of new liquid crystalline interlocked molecules and to study structure-property relationships between rotaxane design and mesomorphism. Chapter 1 introduces concepts of supramolecular chemistry and liquid crystals and cooperative effect between [2]rotaxane …
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Statistical physics of isotropic-genesis nematic elastomers
… give the system the possibility of exhibiting liquid crystallinity, may be integrated along the polymer chain backbones (the main-chain case) or in groups that dangle from the backbone (the side-chain or pendant case). An IGNE is formed when the polymers are permanently and randomly …
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Design of unique composites based on aromatic thermosetting copolyesters
… of carbon fiber was studied. The effect of liquid crystalline character of starting oligomers used to prepare ATSP on the final crystal structure of the ATSP/C composite was evaluated. Matrices obtained by crosslinking of both liquid crystalline oligomers (ATSP2) and non-liquid crystalline …