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Title: Proton conduction in biopolymer exopolysaccharide succinoglycan

Protonic currents play a vital role in electrical signalling in living systems. It has been suggested that succinoglycan plays a specific role in alfalfa root nodule development, presumably acting as the signaling molecules. In this regard, charge transport and proton dynamics in the biopolymer exopolysaccharide succinoglycan have been studied by means of electrical measurements and nuclear magnetic resonance (NMR) spectroscopy. In particular, a dielectric dispersion in the system has revealed that the electrical conduction is protonic rather electronic. Besides, our laboratory- and rotating-frame {sup 1}H NMR measurements have elucidated the nature of the protonic conduction, activation of the protonic motion being associated with a glass transition.
Authors:
 [1] ;  [2] ; ; ;  [1] ;  [3] ;  [4]
  1. Department of Physics, Korea University, Seoul 136-713 (Korea, Republic of)
  2. (United States)
  3. Department of Bioscience and Biotechnology and UBITA, Konkuk University, Seoul 143-701 (Korea, Republic of)
  4. Naraebio Research Laboratories, 177 Dangha-ri, Bongdam-eup, Hawseong-si 445-892 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22303967
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALFALFA; BIOLOGICAL MATERIALS; CHARGE TRANSPORT; CURRENTS; DIELECTRIC MATERIALS; DISPERSIONS; GLASS; MOLECULES; NUCLEAR MAGNETIC RESONANCE; POLYMERS; PROTONS; SPECTROSCOPY