Paramagnetic Carbon Nanosheets with Random Hole‐defects and Oxygenated Functional Groups
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- Paramagnetic Carbon Nanosheets with Random Hole‐defects and Oxygenated Functional Groups
- Jung, Sun-Min; Park, Jeongmin; Shin, Dongbin; Lee, DongKyu; Jeong, Hu Young; Jeon, In-Yup; Cho, Hyungjoon; Park, Noejung; Yoo, Jung-Woo; Baek, Jong-Beom
- Issue Date
- John Wiley & Sons Ltd.
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.58, no.34, pp.11670 - 11675
- Ordered graphitic carbon nanosheets (GCNs) were, for the first time, synthesized by the direct condensation of multifunctional phenylacetyl building blocks (monomers) in the presence of phosphorous pentoxide. The GCNs had highly ordered structures with random hole‐defects and oxygenated functional groups, showing paramagnetism. The results of combined structural and magnetic analyses indicate that the hole‐defects and functional groups are associated with the appearance and stabilization of unpaired spins. DFT calculations further suggest that the emergence of stabilized spin moments near the edge‐groups necessitates the presence of functionalized carbon atoms around the hole‐defects. That is, both hole‐defects and oxygenated functional groups are essential ingredients for the generation and stabilization of spins in GCNs.
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