Influence of the substitution of β-cyclodextrins by cationic groups on the complexation of organic anions

Hbaïeb, Souhaïra; Kalfat, Rafik; Chevalier, Yves; Amdouni, Noureddine; Parrot‐Lopez, Hélène

doi:10.1016/j.msec.2007.10.013

Cited by 28 publications

(20 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unusual shape of the current-time transients may be due to the polyelectrolyte properties of the SCD [9]. As no other supporting electrolyte was used, these polyanions will migrate to the positively charged surface of the working electrode on the application of the potential.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

The development of a highly sensitive urea sensor due to the formation of an inclusion complex between urea and sulfonated-β-cyclodextrin

Hamilton¹,

Breslin²

2014

Electrochimica Acta

View full text Add to dashboard Cite

a b s t r a c tA highly sensitive urea sensor was developed by incorporating the urease enzyme (Urs) into a polypyrrole film (PPy) in one simple electropolymerisation step, using a sulfonated-␤-cyclodextrin dopant. This PPyUrs-SCD film has a superior sensitivity of 5.79 C M −1 and detection in the region of 1.0 × 10 −10 M urea, which is greater than other urea sensors reported in the literature. This is due to the formation of an inclusion complex between urea and a sulfonated-␤-cyclodextrin host in an aqueous solution, which was established using electrochemical techniques. Cyclic voltammetry was used to investigate the effect of an excess concentration of the sulfonated-␤-cyclodextrin on the currents recorded for urea. A clear reduction in the current was observed upon the addition of the sulfonated-␤-cyclodextrin. The formation constant, K f , was computed as 2745 ± 300 M −1 , indicating the formation of a relatively strong inclusion complex. In addition, a 1:1 stoichiometry for the inclusion complex was deduced from a Job's plot analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

“…In addition, substituting the hydroxyl groups on the cyclodextrin can either improve or inhibit the binding affinity of the cyclodextrin [9]. Negatively charged cyclodextrins can be obtained by the substitution of the hydroxyl groups with sulfonate groups.…”

Section: Introductionmentioning

confidence: 99%

The development of a highly sensitive urea sensor due to the formation of an inclusion complex between urea and sulfonated-β-cyclodextrin

Hamilton¹,

Breslin²

2014

Electrochimica Acta

View full text Add to dashboard Cite

show abstract

“…And the glucopyranose units are then further cleaved into several anionic fragments in formula (2). The fragments with hydroxyl form negative ions and hydrogen radicals in formula (3).…”

Section: Surface Analysis and Tribochemistrymentioning

confidence: 99%

“…The β-CD forms doughnut-shaped molecule with its hydroxyl group on the outside of the molecule and a relatively nonpolar hole in the middle [1] . This hole can accommodate another molecule with appropriate size and polarity, called "guest", form host-guest inclusion complexes with a variety of organic and inorganic molecules via molecular recognition in aqueous solution [2,3] . At present, it is widely used in the chemical and pharmaceutical industries, agriculture and other related fields, including improving the solubility and stability (against the effects of light, heat, and oxidation) of drugs and selectively binding materials that fit into the central hole in purification [4,5] .…”

Section: Introductionmentioning

confidence: 99%

Preparation and action mechanism of inclusion complex of β-cyclodextrin and sulfurized isobutylene as additives in solution of polyethylene glycol-600

Guan

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

View full text Add to dashboard Cite

The inclusion complex of β-cyclodextrin (β-CD) and sulfurized isobutylene (T321) was prepared with a co-precipitation method. The tribological properties of the complex with different concentrations were investigated by a four-ball tester in the solution of polyethylene glycol-600 (PEG-600). The experimental results suggest that the complex exhibits better anti-friction and anti-wear properties than β-CD under different load conditions. The tribo-system shows the least friction coefficient when the concentration of the complex is 0.8%. During the friction process, the complex was decomposed into various molecular fragments and the T321 molecules were released onto the friction interface to provide effective lubrication. The XPS analytical results on the worn surfaces reveal that sulfide film formed by the released T321 plays a major role, and the iron alkoxide and carbon deposition films formed by the β-CD fragments have better anti-friction effect on the sulfide film surface. The interactions of different films result in the formation of a mixed boundary lubrication film.

show abstract

“…The internal cavity exhibits hydrophobic properties, which enable complexation of a variety of guest molecules including both organic and inorganic species. The character of the guest compound can vary significantly, from polar compounds including alcohols (Caira, Griffith, & Nassimbeni, 1996), amines (Knoll, Bobek, Giester, & Brinker, 2001) and inorganic (Spencer, He, Wu, & Fetter, 1998) and organic (Hbaieb, Kalfat, Chevalier, Amdouni, & Parrot-Lopez, 2008) anions to apolar ones (for example many hydrocarbons; Neoh, Koecher, Reineccius, Furuta, & Yoshii, 2010). This particular property has been widely used in pharmaceutical (Arun, Ashok, & Sravanthi, 2008) and food (Astray, GonzalezBarreiro, Mejuto, Rial-Otero, & Simal-Gandara, 2009) applications.…”

Section: Introductionmentioning

confidence: 99%

Interactions with β-cyclodextrin as a way for encapsulation and separation of camphene and fenchene

Ceborska

Asztemborska

Luboradzki

et al. 2013

Carbohydrate Polymers

View full text Add to dashboard Cite

Influence of the substitution of β-cyclodextrins by cationic groups on the complexation of organic anions

Cited by 28 publications

References 31 publications

The development of a highly sensitive urea sensor due to the formation of an inclusion complex between urea and sulfonated-β-cyclodextrin

The development of a highly sensitive urea sensor due to the formation of an inclusion complex between urea and sulfonated-β-cyclodextrin

Preparation and action mechanism of inclusion complex of β-cyclodextrin and sulfurized isobutylene as additives in solution of polyethylene glycol-600

Interactions with β-cyclodextrin as a way for encapsulation and separation of camphene and fenchene

Contact Info

Product

Resources

About