Spectrophotometric study of selective binding behaviors of dye molecules by pyridine-and bipyridine-modified beta-cyclodextrin derivatives with a functional tether in aqueous solution

Article Abstract:

Four beta-cyclodextrin derivatives bearing pyridine or bipyridine linkers, namely, mono[6-(3-pyridinecarboxamide)ethyleneamino-6-deoxy]-beta-CD, mono[6-(4-pyridinecarboxamide)ethyleneamino-6-deoxy]beta-CD, N,N'-bis(2-aminoethyl)-2,2'-bipyridine-4,4'-dicarboxamide-bridged bis(6-amino-6-deoxy-beta-CD) and their copper (II) complexes are selected as molecular receptors to explore the conformation-function relationship of oligo(beta-CD)s.

Pyridine, Aqueous solution reactions

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Spectrophotometric study on the controlling factor of molecular selective binding of dyes by bridged bis(beta-cyclodextrin)s with diselenobis(benzoyl) linkers

Article Abstract:

The conformations of several bis(beta-CD)s linked by 4,4'-diselenobis(benzoyl) and 2,2'-diselenobis(benzoyl) linkers as well as their inclusion complexation behaviors with some structure-related dye molecules are investigated. The results indicated that the length of the linker group affected the molecular recognition behaviors of bis(beta-CD)s to a great degree.

Analysis, Molecular structure, Spectrophotometry, Structure

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Spectrophotometric and calorimetric titration studies on molecular recognition of camphor and borneol by nucleobase-modified [beta]-cyclodextrins

Article Abstract:

The synthesis of a series of nucleobase-modified beta-cyclodextrins ([beta]-CDs) is carried out to analyze their thermodynamically binding behavior toward camphor and borneol. Both the bicyclic terpenoids are observed to exhibit biological functions such as antibacterial, antispasmodic, choleretic, and tranquilizing effects.

Terpenes, Usage, Technology application, Nuclear magnetic resonance spectroscopy, Thermal properties, Enantiomers, Camphor

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