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Solid-state NMR characterization of cyclomaltoheptaose (β-cyclodextrin) polymers using high-resolution magic angle spinning with gradients

✍ Scribed by G. Crini; M. Bourdonneau; B. Martel; M. Piotto; M. Morcellet; T. Richert; J. Vebrel; G. Torri; N. Morin

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
170 KB
Volume
75
Category
Article
ISSN
0021-8995

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✦ Synopsis

Solid-state nuclear magnetic resonance (NMR) techniques were used to characterize cyclomaltoheptaose (␤-cyclodextrin, ␤-CD) polymers. These insoluble materials have been investigated by cross-polarization magic angle spinning with dipolar decoupling (CP/MAS), magic angle spinning without dipolar decoupling (MAS), and high-resolution magic angle spinning with gradients (HRMAS). These NMR spectra allow the assignment of the principal 1 H and 13 C signals. The presence of two distinct components (cross-linked ␤-CD and polymerized epichlorohydrin) in the materials was clearly demonstrated. These polymers were used as sorbents and the resulting NMR spectra are presented and discussed.

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