1H nuclear magnetic resonance study of mixed-valent dodecylamine-intercalated vanadium oxide nanosheets |
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| Authors: | Hyocheon Kweon Kyu Won Lee Cheol Eui Lee |
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| Affiliation: | 1. Departamento de Física, Universidade Estadual de Maringá, Av. Colombo 5790, 87.020-900 Maringá, PR, Brazil;2. INFIQC-CONICET, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina;1. Health Sciences Centre, College of Education, University of Canterbury, Christchurch, New Zealand;2. Health Sciences Centre, University of Canterbury, New Zealand;3. School of Educational Studies and Human Development, University of Canterbury, New Zealand;1. Department of Materials Science and Engineering, Korea University, Seoul 136-701, South Korea;2. Department of IT-NS, KU-KIST Graduate School of Converging of Science and Technology, Seoul 136-713, South Korea;3. Electronic Materials Center, KIST 39-1 Hawolkok-dong, Seongbuk-gu, Seoul 137-791, South Korea;4. Center for Intelligent Nano-Bio Materials (CINBM), Department of Chemistry and Nano Sciences, Ewha Womans University, Seoul 120-750, South Korea |
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| Abstract: | ![]()
Alkyl-chain dynamics in the mixed-valent dodecylamine-intercalated vanadium oxide nanosheets (C12VONS) was investigated by means of 400-MHz 1H nuclear magnetic resonance. Two C12VONS samples with distinct alkylammonium-to-alkylamine ratios showed distinct alkyl-chain dynamics, the alkylammonium chains being apparently more disordered than the alkylamine chains. The high-temperature spin–lattice relaxation is dominated by the conformational chain defects and the reorientational motions of the alkyl chains, respectively, in the alkylammonium-abundant system and in the alkylamine-abundant system. The reorientational and conformational changes of the alkyl chains appear to be uncorrelated with the magnetic transitions. |
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