Smart control of guest inclusion by α-cyclodextrin using its hydration history.

ABSTRACT: Hydration history was found to control the inclusion capacity of α-cyclodextrin (aCD) for volatile organic guests, so that its level may be switched from zero to the stoichiometric value and back by the variation of aCD hydration/dehydration order and direction. Such variation of the inclusion capacity is caused by the balance of two water roles: the activation of guest inclusion and guest/water competition. These observed concurrent roles and the cooperativity of guest inclusion and hydration make possible the smart tuning of the guest inclusion by the subtle change of preparation procedure. Depending on the hydration history, aCD was shown to form hydrates with the same water contents but different packing types and different kinetics of dehydration, which correlates with their different

SUBMITTER: Gatiatulin AK 

PROVIDER: S-EPMC9075746 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature