Global ETD Search
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Showing 1 to 11 of 11 for “"cavitand"”.
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Self-Assemblies Driven by the Hydrophobic Effect
… of all, a novel water-soluble deep-cavity cavitand was synthesized. It possesses four <em>endo </em>methyl groups on top rim of the cavitand, eight water-solubilizing carboxylic acid groups coated on the cavitand exterior, and a relatively large hydrophobic interior. Compared to a previous …
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Calorimetric studies of small-molecule adsorption to carbon nanotubes
… pendant pyrene moietites effectively tethers the cavitand receptor to CNTs, primary ammonium salts do not bind to the cavitand more strongly than to the SWCNT surface. Highly selective receptors with large binding affiniites for both CNTs and analyte are necessary to optimize CNT-based sensing …
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Two New Resorcinarenes: A Pyridine & Acetic Acid Ligand for Metal Coordination and a Deep-Cavity Nitroquinoxaline Resorcinarene
… the upper rim of resorcinarene-based cavitands allows a variety of compounds to be synthesized from a single scaffold. Using the upper-rim moieties as ligands for a variety of transition metal ions further increases the versatility of this class of host compounds. A new …
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Functionalization and applications of carbon nanotubes
… based on SWCNTs that are functionalized with a cavitand. In Chapter 6, we describe a sensor for the plant hormone ethylene. The sensor is based on SWCNTs that are non-covalently functionalized with a copper complex. The device shows good sensitivity and selectivity for ethylene and could be …
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Synthesis and single-molecule force spectroscopy of supramolecular capsules
… dynamics of supramolecular capsules based on cavitands and calix[4]arenes is investigated. In the first part, large supramolecular coordination cages have been prepared by metal-directed self-assembly of functionalized cavitands. The synthesis of the hexameric coordination cage demonstrates, …
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Synthesis and host-guest interaction of cage-annulated podands, crown ethers, cryptands, cavitands and non-cage-annulated cryptands.
… behavior. A series of cage-annulated cryptands, cavitands and the corresponding non-cage-annulated model compounds have been synthesized. These host molecules display unusual behavior when examined by using ESI-MS techniques, i.e., they bind selectively to smaller alkali metal ions (i.e., Li+ and …
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Water-Soluble Deep-Cavity Cavitands: Synthesis, Molecular Recognition, and Interactions with Phospholipid Membranes
<p>Water-soluble deep-cavity cavitands provide a rare opportunity to study self-assembly driven by the hydrophobic effect. These molecular hosts dimerize in the presence of certain guest molecules to form water-soluble molecular capsules. These systems have given rise to numerous novel chemical …
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Electrochemical CO2 reduction on Cucurbit[n]uril modified Gold
… CO2 was realised by utilising a larger cavitand (CB[8]) that is able to host an auxiliary guest. The resulting CB[8]•guest•CO2 non-covalent complexes were analysed for CO2 binding, surface assembly and CO2 reduction catalysis. In summary, this thesis presents a model system that applies …
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Amphiphilic hyperbranched polyglycerols for industrial and biomedical applications
… (ROMBP) of glycidol using resorcin[4]arene cavitand. The resorcin[4]arene, a cyclic macrocycle of resorcinol, has eight phenolic hydroxyls on one side and four aliphatic “feet” in the opposite side, providing a hydrophobic base for HPG-R. Using HPG-R as an emulsifying agent, SPION clusters …
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Synthesis of Molecular Baskets and Introduction of Inward Facing Functionality
As a first step to producing a shape selective catalysts or enzyme mimic, two preorganized host molecules were synthesized. Binding studies of the two hosts with a variety of guests in three solvents demonstrated that an important driving force in the association was the formation of C-H???X-R …