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Covalent Modification of Graphene Oxide with Carbazole Groups for Laser Protection

Bai, Ting ; Li, Cong-Qi ; Sun, Jie ; Song, Yi ; Wang, Jun ; Blau, Werner J. ; Zhang, Bin ; Chen, Yu

Chemistry : a European journal, 2015-03, Vol.21 (12), p.4622-4627 [Periódico revisado por pares]

Weinheim: WILEY-VCH Verlag

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  • Título:
    Covalent Modification of Graphene Oxide with Carbazole Groups for Laser Protection
  • Autor: Bai, Ting ; Li, Cong-Qi ; Sun, Jie ; Song, Yi ; Wang, Jun ; Blau, Werner J. ; Zhang, Bin ; Chen, Yu
  • Assuntos: carbazole ; Carbazoles ; Chemistry ; Coefficients ; Constraining ; Covalence ; Derivatives ; Fourier transforms ; Graphene ; laser protection ; materials science ; nonlinear optics ; Nonlinearity ; Oxides ; Spectrum analysis
  • É parte de: Chemistry : a European journal, 2015-03, Vol.21 (12), p.4622-4627
  • Notas: istex:2E83BC50AF68B4F8622CDCDBEF1BB3C4DA8562A1
    ArticleID:CHEM201405509
    Ministry of Education and State Administration of Foreign Experts Affairs - No. TS2010HDLG024
    National Natural Science Foundation of China - No. 61378072
    Natural Science Foundation of China - No. 61178007
    Science and Technology Commission of Shanghai Municipality - No. 11nm0502400; No. 12J1409400
    ark:/67375/WNG-SSZWZGV5-X
    China National Foreign Experts Program and Science Foundation Ireland - No. 12/IA/1306
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: In the past decades, significant effort has been invested into the research and development of optical limiting materials and processes in order to develop practical solutions for the protection from laser beams. In this study, a new soluble graphene oxide based material (GO–Cz) has been synthesized through the covalent modification of graphene oxide (GO) with a carbazole derivative (Cz). The formation of an amido bond between the Cz group and GO has been confirmed by X‐ray photoelectron and Fourier transform infrared spectroscopy. At the same concentration, both the nonlinear extinction coefficient and the imaginary third‐order susceptibility were increased by a factor of ≈6.93 at 532 nm and ≈6.07 at 1064 nm relative to those of GO, as a result of the covalent grafting of the Cz moieties onto the GO surface. The GO–Cz dispersions exhibit a much better optical limiting performance than GO and GO/Cz blends at both 532 and 1064 nm due to the possible intramolecular electron‐transfer between the GO and Cz moieties and the effective combination of the different nonlinear optical mechanisms. Laser protection: A new soluble graphene oxide (GO) based material has been synthesized through the covalent modification of GO with a carbazole derivative (Cz) by an amidation reaction. At the same concentration, both the nonlinear extinction coefficient and the imaginary third‐order susceptibility of this compound was increased by a factor of ≈6.93 at 532 nm and ≈6.07 at 1064 nm relative to those of GO.
  • Editor: Weinheim: WILEY-VCH Verlag
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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