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Variable-temperature high-resolution carbon-13 studies of molecular motion in solid bisphenol-F diglycidyl ether

✍ Scribed by Daniele Casarini; Robin K. Harris; Alan M. Kenwright

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
445 KB
Volume
30
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Variable‐temperature cross‐polarization magic‐angle spinning solid‐state ^13^C NMR spectra of bisphenol‐F diglycidyl ether were obtained in the temperature range 25–67°C. Dynamic phenomena are observed, and the experimental data are in accord with an inhomogeneous distribution of correlation times, perhaps related to a second‐order phase change. Single‐pulse excitation experiments under comparable conditions confirmed the presence of motional inhomogeneity, characterized by a fraction of mobile molecules within the sample. Differential scanning calorimetric measurements revealed a phase transition at ca. 50 °C.

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Investigation of molecular motions in a derivative of bisphenol-A diglycidyl ether by variable-temperature high-resolution solid-state carbon-13 NMR
✍ Brian Everatt; Robin K. Harris; Alan M. Kenwright; Kenneth J. Packer; B. Peter S 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 426 KB

## Variable -temperature solid-state 13C NMR measurements show effects due to molecular motion in spectra of 2,2-bis[p-(2,3-dihydroxypropoxy)phenyl]propane (BADGETOL), which is a derivative of bisphenol-A diglycidyl ether. Features in the spectra indicate that the motions present may not be charac