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 20 of 52 for “"cucurbit"”.
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Cucurbit Downy Mildew (Pseudoperonospora cubensis): Cucumber Resistance
… (Bert. et Curt) Rost. is the causal agent of cucurbit downy mildew (CDM). It is the most damaging cucumber pathogen on the Eastern Shore of Virginia and eastern parts of the United States. Pseudoperonospora cubensis is an obligate oomycete pathogen, infecting crops within the Cucurbitaceae …
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Cucurbit[n]uril-engineered Nano-constructs for Molecular Sensing
… affinity towards the substrate is thus limited. Cucurbit[n]uril (CB[n]) exhibits strong and selective encapsulation of various guest molecules into its barrel-shaped cavity. In addition, it can function as a precise rigid spacer between metallic nanoparticles (NPs). The larger homologue CB[8] can …
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Electrochemical CO2 reduction on Cucurbit[n]uril modified Gold
… thesis, gold surfaces were functionalised with cucurbit[n]uril (CB[n]) macrocycles to form a hybrid organic-inorganic model system capable of influencing the local chemical environment of gold as a heterogeneous CO2 reduction electrocatalyst. This supramolecular system was carefully investigated …
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Cucurbit[n]uril-based colloidal self-assembly in hybrid polymeric systems
… of novel colloidal assemblies based on cucurbit[n]urils host-guest interactions, including hybrid ‘raspberry-like’ colloids, catalytic polymeric nanocomposites, advanced structured colloids, and supramolecular polymer colloidal hydrogel.
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Aqueous Self-Assembly with Cucurbit[n]urils: From Solution to Emulsion
… 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 discovery. Emulsions and their controlled generation with microfluidic techniques are then reviewed, as they have been used as …
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The preparation of cucurbit[8]uril-based hydrogels for delivery applications
… hydrogels based on the host-guest chemistry of cucurbit[8]uril for the controlled delivery of molecular cargo. The host molecule is capable of binding two guest molecules in an inclusion complex. Its addition to an aqueous solution of guest-functional polymers leads to the formation of …
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Supramolecular Functional Materials Based on Cucurbit[8]uril-Enhanced π–π Interactions
… and nanotechnology. In particular, the cucurbit[n]uril (CB[n]) family of macrocyclic hosts has attracted considerable attention over the last decade. Advantages of CB[n]-based systems include compatibility with a wide guest scope of molecules, a high binding affinity that spans a wide …
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Self-assembly of synthetic and biological components in water using cucurbit[8]uril
… in the presence of our molecular host of choice, cucurbit[8]uril (CB[8]). Our studies on the self-assembly of synthetic and biological components in water bridge overlapping concepts and techniques drawn from the fields of synthetic organic chemistry, supramolecular self-assembly, and applied NMR …
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Uncovering and Exploiting Cucurbit[8]uril Host-Guest Dynamics in Bulk Mechanical Behaviour
… with myriad application. Hydrogels based on cucurbit[8]uril (CB[8]) supramolecular interactions are ideal candidates to study this relationship due to the variability in guests and binding modes it accommodates. In the first chapter earlier studies on pressure-induced changes in CB[8] …
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Bypassing the Blood-Brain Barrier: Cucurbit[8]uril-based Hydrogels Towards Drug Delivery Reservoirs
… the first chapter the host-guest interactions of cucurbit[8]uril in aqueous assemblies, with a particular emphasis on those systems forming hydrogels, are summarised. The application of hydrogels towards delivery devices in glioblastoma and ependymoma are outlined and discussed. The second chapter …
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Hierarchical Supramolecular Assemblies Based on Host-Guest Chemistry between Cucurbit[n]uril and Azobenzene Derivatives
Cucurbit[8]uril (CB[8]) has attracted great interest in the cucurbit[n]uril (CB[\textit{n}]) family on account of its capability to simultaneously accommodate two guests inside its cavity, to form strong yet dynamic ternary complexes.Owing to the photo-induced \textit{trans} to \textit{cis} …
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Study of ternary complexes of cucurbit[8]uril and their applications in self diagnostic composites
… properties for specific applications. The cucurbiturils are one such class of receptors that have garnered increasing interest in the last decade due to their unique guest binding abilities. Cucurbit[8]uril, as one of the larger homologues, is a particularly appealing host molecule for …
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Towards Multifunctional Materials based on Coordination Complexes of Sulfur-Containing Diarylazo and Cucurbit[6]uril Ligands
… of Ln4-cubane sandwich-type structures from cucurbit[6]uril and isonicotinate together with suitable Ln3+ salts. A family of complexes with two structural topologies were isolated; [Gd4(µ3-OH)4(µ2-OH)4] (8a) and [Ln4(μ3- OH)4(μ2-OH)(µ2-IN)] (where Ln3+= Dy or Tb; 8b, 8c). The complexes were …
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The Effects of Insecticides on Squash Bug, its Egg Parasitoids and Pollinators in Virginia Cucurbit Production
… parasitoid, and pollinators in the production of cucurbits in Virginia. Plants in the cucumber family are dependent on insect pollination for successful fruit set, and are also susceptible to plant eating insects. Squash bugs are capable of transmitting cucurbit yellow vine decline, and their …
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Integrated pest management of squash bug, Anasa tristis, for conventional and organic cucurbit systems in Virginia
… Geer (Hemiptera: Coreidae), is a serious pest of cucurbit crops across the US, especially within summer squash (Cucurbita pepo L.) systems. Using its piercing sucking mouthparts, squash bug feeds on both leaf tissue and fruits, potentially leading to leaf necrosis, seedling death, and yield loss. …
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Design, Synthesis and Characterisation of π-Extended Viologen-Based Molecular and Supramolecular Complexes with Cucurbit[n]urils
… interactions of V$^{2+}$ derivatives with cucurbit[n]uril (CB[n], for n=7 or 8) macrocycles, the dimerisation of V$^{+.}$ radical cations inside the CB[8] molecular cavity as well as redox controlled stoichiometry of V$^{2+}$ based inclusion complexes make these systems highly attractive …
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The Use of Buckwheat Border Habitats to Attract Natural Enemies of Cucumber Beetles in a Cucurbit Agroecosystem
… Coleoptera: Chrysomelidae) two major pests of cucurbits, was assessed in a cucurbit agroecosystem by using buckwheat (Fagopyrum esculentum Moench) border habitat to attract the natural enemies, Celatoria diabroticae (Shimer) and Celatoria setosa (Coquillett) (both Diptera: Tachinidae) and …
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