Abstract
The conformational and binding properties of mono-6-deoxy-6[4-(1-ethyl-4-pyridinio)-1-pyridinio]-β-cyclodextrin (1) in complex formation with some guest compounds were examined by induced circular dichroism (ICD) spectra in aqueous solution. Compound 1 showed much stronger binding ability for some guest compounds (1: 1 complexes), compared withβ-cyclodextrin (β-CDx) and a positively charged β-CDx [C-6-mono-pyridino-β-CDx (2)]. Marked conformational changes of1 (the spatial position of the ethyl viologen (C2V2+) group relative to the cavity in 1) were observed upon complex formation with some guests like 1-adamantanecarboxylic acid (ACA) and sodium cholate (SC).
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Du, YQ., Nakamura, A. & Toda, F. The conformational and binding properties of ethylbipyridinio-modifiedβ-Cyclodextrin using induced circular dichroism. J Incl Phenom Macrocycl Chem 10, 443–451 (1991). https://doi.org/10.1007/BF01061075
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DOI: https://doi.org/10.1007/BF01061075