Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/3232
Título: Evidence of higher complexes between cucurbit[7]uril and cationic surfactants
Autor: Pessêgo, Márcia
Moreira, José A.
García-Río, Luís
Palavras-chave: Inclusion compounds
Kinetics
NMR spectroscopy
Supramolecular chemistry
Surfactants
Data: 2012
Editora: Wiley-VCH
Citação: Pessêgo, Márcia; Moreira, José A.; García-Río, Luís. Evidence of Higher Complexes Between Cucurbit[7]uril and Cationic Surfactants, Chemistry - A European Journal, 18, 25, 7931-7940, 2012.
Resumo: The host–guest assembly of CB7 with a series of alkyl(trime-ACHTUNGTRENUNGthyl)ammonium (CnTA+) surfactants of different chain lengths (n=6–18) has been studied. The complexation behaviour was investigated by NMR spectroscopy, isothermal titration calorimetry and kinetics measurements. The combined results of these techniques provided evidence for the formation of 1:1 inclusion and 2:1 external complexes in the cases of CnTA+ with n=12–18. The binding constants for the 1:1 complexes are independent of the alkyl chain length of the surfactant, whereas a relationship between K2:1 and the chain length of the surfactant was found for the 2:1 complexes.
Peer review: yes
URI: http://hdl.handle.net/10400.1/3232
DOI: http://dx.doi.org/10.1002/chem.201103049
ISSN: 09476539
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)

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