ISSN:
1573-1111
Keywords:
cucurbituril
;
cyclodextrin
;
nonionic surfactants
;
complex formation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The complexation of nonionicsurfactants and polyethylene glycols by the ligandscucurbituril, α- and β-cyclodextrin wasstudied in aqueous solution. All the examined guestmolecules form complexes with these ligands.Calorimetric titrations were performed to determinedirectly the stability constants and reactionenthalpies. The presence of an aromatic part innonionic surfactants leads to more stable complexeswith β-cyclodextrin than with the other ligands.If the surfactants contain no benzene group, theinteractions with α-cyclodextrin are strongercompared to other ligands. The chain length of thepolyethylene glycols has only an influence upon thevalues of the reaction enthalpy in the case ofα-cyclodextrin.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008148831359
