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Showing 1 to 6 of 6 for “"Molecular tweezers"”.
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Molecular tweezers: Synthetic receptors for the DNA base adenine
The design and syntheses of a series of molecular tweezers containing functional groups in the bay area of the spacers are discussed. Molecular tweezers 98, 99, 120, and 128 were designed to complex the DNA base adenine through a combination of hydrogen bonding and $\pi$-stacking interactions. They …
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Part I. Molecular Tweezers: Synthetic Receptors for Nucleotide Bases. Part II. Molecular Self-Assembly: Design of a Helical Aggregate
… design, syntheses, and complexation studies of molecular tweezers containing active site carboxylic acids are discussed. The strength, nature, stoichiometry, and geometry of the complex between molecular tweezer 28 and 9-propyladenine was studied. The cooperativity of hydrogen bonding and …
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Part I. Molecular tweezers: Role of preorganization and synthetic progress toward a water soluble tweezer. Part II. Progress towards an empirical approach to carbohydrate recognition
Part I. Three molecular tweezers have been synthesized to determine the role of preorganization in the host-guest complexation of these systems. The synthesis of these tweezers was accomplished by the reaction of their respective dibromo-pyrylium salts with an absolute ethanol/aqueous ammonium …
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Studies in molecular recognition. Part I. Expanded molecular tweezers: Design and synthesis of novel receptors. Part II. Molecular self-assembly: Use of carboxylic acids as self-assembly elements
… approaches, and complexation studies of molecular tweezers possessing spacer units $>$7 A are discussed. A general feature of these approaches is the use of the Friedlander reaction to generate the spacer unit. A tweezer utilizing 2,7-dimethoxyacridine as the chromophore with an …
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Chemically bonded stationary phases using molecular tweezer hosts: A quantitative HPLC binding assay for nitro-aromatic guests
… bis-phenanthrene, and bis-trimethoxyphenanthrene molecular tweezers 74, 89, and 92. The retention times of several $\pi$-electron deficient guests were measured as a function of temperature on HPLC columns made from each of these CBSPs. Van't Hoff plots were generated to give a total of 22 …