科研之友
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摘要
Electron spin resonance study of unzipped graphene nanoribbons (GNRs) reveals a specific carbon-related signal, denoted G(C), at g=2.0032, attributed to GNRs periphery centers. The signal is observed to be readily quenched upon O-2 adsorption, which appears to be fully reversible upon room temperature vacuum treatment. Its depassivation behavior, observed from 130 K onward, is well described by first-order kinetics, characterized by the dissociation energy of 0.58 +/- 0.04 eV of spread 0.11 +/- 0.02 eV.
- 出版日期2011-2-21
