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EnglishNew pH-responsive nanosponges were obtained by reacting four different polyaminocyclodextrins with heptakis-(6-bromo)-(6-deoxy)-β-cyclodextrin. The materials obtained were characterized by various techniques (FT-IR, potentiometric titration, differential scanning calorimetry (DSC), porosimetry (BET), 13C{1H} CP-MAS NMR). Their adsorption abilities at different pH values were verified towards a suitable set of model guests, and seem mainly controlled by electrostatic interactions, as a function of the protonation/charge status of the polymer matrix. By contrast, data positively point out a lesser importance assumed by the induced-fit effect, important in affecting the formation of host-guest complexes in solution. The frequency-switched Lee-Goldburg (FSLG) heteronuclear correlation solid-state NMR technique was exploited in order to assess the possible location of the guests within the polymer matrix.
Russo, M., Saladino, M., Chillura Martino, D., Lo Meo, P., & Noto, R. (2016). Polyaminocyclodextrin nanosponges: synthesis, characterization and pH-responsive sequestration abilities. RSC ADVANCES, 6(55), 49941-49953 [10.1039/c6ra06417e].
| Data di pubblicazione: | 2016 | |
| Titolo: | Polyaminocyclodextrin nanosponges: synthesis, characterization and pH-responsive sequestration abilities | |
| Autori: | ||
| Citazione: | Russo, M., Saladino, M., Chillura Martino, D., Lo Meo, P., & Noto, R. (2016). Polyaminocyclodextrin nanosponges: synthesis, characterization and pH-responsive sequestration abilities. RSC ADVANCES, 6(55), 49941-49953 [10.1039/c6ra06417e]. | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1039/c6ra06417e | |
| Abstract: | New pH-responsive nanosponges were obtained by reacting four different polyaminocyclodextrins with heptakis-(6-bromo)-(6-deoxy)-β-cyclodextrin. The materials obtained were characterized by various techniques (FT-IR, potentiometric titration, differential scanning calorimetry (DSC), porosimetry (BET), 13C{1H} CP-MAS NMR). Their adsorption abilities at different pH values were verified towards a suitable set of model guests, and seem mainly controlled by electrostatic interactions, as a function of the protonation/charge status of the polymer matrix. By contrast, data positively point out a lesser importance assumed by the induced-fit effect, important in affecting the formation of host-guest complexes in solution. The frequency-switched Lee-Goldburg (FSLG) heteronuclear correlation solid-state NMR technique was exploited in order to assess the possible location of the guests within the polymer matrix. | |
| Settore Scientifico Disciplinare: | Settore CHIM/02 - Chimica Fisica Settore CHIM/06 - Chimica Organica | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/10447/178146
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