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Showing 1 to 20 of 43 for “"host-guest chemistry"”.
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Biomimetics and Host-Guest Chemistry
In an effort to produce the tetrahedrally coordinated, catalytically active zinc center, three families of tris(2-pyridyl)methanol derivatives were synthesized and characterized. Zinc binding studies revealed that the binding behaviors of the ligands depended on the steric and electronic properties …
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Functional Supramolecular Hydrogels Mediated by Host-Guest Chemistry
Hydrogels mediated by host-guest interactions represent a compelling class of materials with a myriad of promising applications including medical devices, wearable electronics and even for use as a strong adhesive. Several high-impact applications involving cyclodextrin (CD) mediated hydrogels have …
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Nitrosoarenes: magnetic anisotropy, donor-acceptor bonding and host-guest chemistry
… (DMANB) and p-nitrosocumene (p-NC) by organic host molecules such as octa-acid (OA), cucurbit[7]uril (CB7), and cyclodextrins (?,?,?-cd) in aqueous solution is studied.
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Luminescent Iridium(III) Cyclometalated Complexes: Host-Guest Chemistry and Application as Sensors
… have been synthesized and investigated in a host-guest chemical context and in studies towards an application in the detection of peroxide-based explosives in fingerprints. The complexes [Ir(ppy-R)2(bpy)]n+ studied here contain two cyclometalated ligands (ppy-R: R-substituted …
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Hierarchical Supramolecular Assemblies Based on Host-Guest Chemistry between Cucurbit[n]uril and Azobenzene Derivatives
… 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} isomerisation property, azobenzene (Azo) derivatives have been widely employed in several host-guest systems, leading to …
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Coordination Cages: Beyond The Solution State
… able to encapsulate a diverse array of molecular guests in the solution state, from both organic and aqueous media. This thesis investigates the application of metal-organic coordination cages in the solid-supported physisorbed and neat liquid states and the host-guest chemistry of the resulting …
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Inclusion of alkylparabens in cyclodextrins
… inclusion complexes with cyclodextrins (CDs), as hosts, and drugs, as guests, characterise them using various methods and attempt to elucidate their structures by X-ray diffraction methods to establish the detailed mode of drug inclusion in the solid state. Cyclodextrins and their derivatives have …
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Geometric and optical transformations of supramolecular host-guest amphiphiles
… energy applications, and others. Simultaneously, host-guest chemistry provides a robust and powerful mechanism for inducing switching on the molecular level. In this research, we demonstrate a new platform that combines molecular self-assembly of an amphiphilic chromophore guest molecule with its …
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Characterization of Cucurbituril Complex Ions in the Gas Phase Using Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
<p>Host-guest interactions have been well studied in the new century to obtain fundamental insights into supramolecular chemistry. Most of the pioneering works have been done using techniques such as NMR, X-ray crystallography, IR spectroscopy and so on. However, none of these techniques is …
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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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Non-Equilibrium Transport Across Liquid Membranes Using Coordination Cages
The host-guest chemistry of coordination cages underscores their utility in selectively extracting molecules, offering potential for chemical separation systems. However, the equilibrium constraint within bulk liquid membrane systems limits molecular transport efficiency to 50%, hindering …
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The preparation of cucurbit[8]uril-based hydrogels for delivery applications
… and characterisation of 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 …
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Aqueous Self-Assembly with Cucurbit[n]urils: From Solution to Emulsion
… research undertaken at the interface between chemistry, materials science, physics and engineering. Chapter 1 is an introductory chapter into the core concepts underlying this thesis. Supramolecular chemistry as a broad research field is briefly reviewed, followed by a focus on host-guest …
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The synthesis and sensing capabilities of new amide, urea and nitrile calix4arenes
The synthesis and host-guest chemistry of new structures based on neutral calix[4]arene supramolecular platforms is investigated. Hosts are substituted to varying degrees with functionalised appendages to form cavities for selectively complexing guests. Functional groups include ureas, amides and …
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The separations of picoline isomers by enclathration
… isomers one of the more challenging obstacles in chemistry. In these cases, the supramolecular phenomenon of host-guest chemistry may be used in order to achieve separation. In this investigation, the preferences of three TADDOL (α,α,α’,α’-tetraphenyl-l,3-dioxolane4,5-dimethanol) - derived host …
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Main Group Hydrogen-Bond Donors and Pyridyl Ligands for Supramolecular and Coordination Chemistry
… In the first part of this thesis we explore the host-guest chemistry of a range of non-carbon frameworks based on P-N bonds. In the first chapter we develop strategies for enhancing the anion binding properties of phosphazanes of the type [(RNH)(E)P(µ-NtBu)]2 (E = O, S, Se) which are bench …
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Allosteric Interactions in Coordination Cages
… behaviour extend the potential applications of host-guest chemistry to programmable molecular systems. Modulating the degree and magnitude of interaction between components within these systems enables the design of chemical behaviour akin to biological complexity. With a view to developing …
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Exploring the Functionality and Application of Cyclic Phosphazanes
… be used to address this issue. Additionally, the host-guest chemistry of these macrocycles with anionic guests and transition metal complexes was studied. Secondly, a series of phenylene-diamino cyclodiphosphazanes (both P(III) and P(V)) and investigated the electrochemical properties via cyclic …
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The design and synthesis of mixed ligand metal organic frameworks for xylene inclusion
Host-guest chemistry, also known as inclusion chemistry, is an important subfield of supramolecular chemistry where there is great current interest owing to its great promise in the areas of separation of small molecules, sensors, and chiral separation. The term ‘inclusion compounds’ refers to the …
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The Synthesis and Host-Guest Applications of Synthetic Receptor Molecules
<p>Host-guest chemistry involves the complimentary binding between two molecules. Host molecules have been synthesized to bind negative, positive, and neutral molecules such as proteins and enzymes, and have been used as optical sensors, electrochemical sensors, supramolecular catalysts, and in the …
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