Linear Cyclodextrin-Poly(vinylamine): Synthesis and NMR Characterization

Crini, Grégorio; Torri, Giangiacomo; Guerrini, Marco; Martel, Bernard; Lekchiri, Yahya; Morcellet, Michel

doi:10.1016/s0014-3057(96)00169-3

Cited by 25 publications

(13 citation statements)

References 17 publications

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“…[13] An amount of 0.75 g of tosyl chloride was added to 60 ml of anhydrous pyridine solution containing 9 g of bCD. The mixture was stirred for 48 hours at 0 C in an ice bath.…”

Section: Preparation Of Polyethyleneimine Grafting B-cyclodextrin (Pementioning

confidence: 99%

Hydrogel of β-cyclodextrin-Grafted Polyethyleneimine: pH-Sensitive Release

Xia

Kim

Seo

2012

Journal of Dispersion Science and Technology

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Novel pH-sensitive hydrogels were prepared by grafting b-cyclodextrin (bCD) to polyethyleneimine (PEI) and cross-linking bCD using epichlorohydrin (EPI). While the molar ratio of bCD to PEI was kept to 1:50, the molar ratio of EPI to bCD was varied so that it was 3/1, 5/1, and 10/1. When the EPI to bCD ratio was higher, the degree of equilibrium swelling and the percentage release were lower, possibly due to a higher cross-linking density. The % release of blue dextran was much less than that of fluorescein isothiocyanate-dextran (FITC-dextran). The electrostatic interaction of blue dextran with the hydrogel is believed to suppress the release of the dye. Among the hydrogels prepared in this work, the hydrogel prepared using the bCD to EPI ratio of 1/5 was the most pH sensitive in terms of the degree of swelling and the degree of FITC-dextran release.

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“…[13] An amount of 0.75 g of tosyl chloride was added to 60 ml of anhydrous pyridine solution containing 9 g of bCD. The mixture was stirred for 48 hours at 0 C in an ice bath.…”

Section: Preparation Of Polyethyleneimine Grafting B-cyclodextrin (Pementioning

confidence: 99%

Hydrogel of β-cyclodextrin-Grafted Polyethyleneimine: pH-Sensitive Release

Xia

Kim

Seo

2012

Journal of Dispersion Science and Technology

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show abstract

“…␤CD was tosylated by reacting ␤CD and tosyl chloride, following a method reported elsewhere [20]. Tosyl chloride, 0.75 g, was added to 60 ml of ␤CD solution in anhydrous pyridine (15%, w/v).…”

Section: Preparation Ofˇ-cyclodextrin Grafted Polyethyleneimine (Pei-mentioning

confidence: 99%

β-Cyclodextrin grafted polyethyleneimine hydrogel immobilizing hydrophobically modified glucose oxidase

Xia

Kim

2011

International Journal of Biological Macromolecules

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“…This substitution reaction on 9b with a polymeric nucleophile has been applied more often, though with different polymers. As well as poly (allylamine) [28,[33][34][35], poly(vinylamine) [36][37][38][39][40], linear [38] and branched poly (ethylenimine) [38][39][40] and poly(ethylene glycol-block-aspartamide) [41] were used. However, for polymers which do not contain highly nucleophilic amino groups, other strategies had to be developed.…”

Section: Polymer-analogous Reaction With Monofunctional Cyclodextrinmentioning

confidence: 99%