Evidence of higher complexes between cucurbit[7]uril and cationic surfactants

Pessêgo, Márcia; Moreira, José; García-Río, Luís

http://hdl.handle.net/10400.1/3232

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
Chem. Eur. J. 2012 Pessego.pdf		731.81 KB	Adobe PDF	Download

Send Feedback

Authors

Pessêgo, Márcia

Moreira, José

García-Río, Luís

Abstract(s)

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.

Keywords

Inclusion compounds Kinetics NMR spectroscopy Supramolecular chemistry Surfactants

URI

http://hdl.handle.net/10400.1/3232

Citation

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.