ELECTRON SPIN RESONANCE STUDIES OF IRRADIATED SINGLE CRYSTALS OF SUGARS
Single crystals of lactose hydrate, sucrose, methyl-Dglucoside, glucoronolactone, D-glucosamine-HCl, and diacetone sorbose were irradiated at 77 deg K and their esr spectra were observed immediately after irradiation or after annealing at 193 deg K. The sugars also were irradiated at room temperature, and their esr spectra observed. The position of the substituted functional group in a substituted sugar molecule is more accessible to radiation damage than other positions in the molecule. Therefore, the positions are selectively damaged by irradiation. For thls reason, the esr spectra of irradiated single crystals of sugar derivatives differ greatly from those found in the unsubstituted parent sugars. The free radicals formed in sugars by irradiation at 77 deg K are transformed by subsequent annealing. The transformation processes can be explained by a change in the configuration of the radical species in most instances. However, there are a few cases where the transformation includes migration of the free-radical site. (auth)
- Research Organization:
- Duke Univ., Durham, N.C.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-040873
- OSTI ID:
- 4633274
- Journal Information:
- Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 10 Vol. 67; ISSN 0022-3654
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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