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Preparation and Characterization of the Crystalline Inclusion Complex between β‐Cyclodextrin and Poly(neopentyl glycol)
Author(s) -
Li Jingye,
Yan Deyue
Publication year - 2002
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20020101)203:1<155::aid-macp155>3.0.co;2-g
Subject(s) - cyclodextrin , inclusion (mineral) , crystallography , fourier transform infrared spectroscopy , chemistry , characterization (materials science) , inclusion compound , powder diffraction , proton nmr , crystal structure , nmr spectra database , materials science , stereochemistry , chemical engineering , organic chemistry , spectral line , nanotechnology , mineralogy , physics , astronomy , engineering
This work reports the preparation and characterization of the crystalline inclusion complex between polymeric guest, poly(neopentyl glycol) (PNPG), and small‐molecular host, β‐cyclodextrin (β‐CD). The crystalline inclusion complex was characterized with FTIR, TGA, X‐ray diffraction, 1 H NMR and 13 C CP/MAS NMR spectroscopes. It was found that the crystalline inclusion complex has higher temperature stability than the pure β‐CD. The X‐ray powder diffraction patterns of the crystalline inclusion complex proved that it has a columnar structure. 13 C CP/MAS NMR spectra of the crystalline inclusion complex indicate that CDs adopt a more symmetrical conformation in the complex, while pure CD assume a less symmetrical conformation in the crystal without a guest inside its cavity.