Circular dichroism of graphene oxide: the chiral structure model

doi:10.1007/s11706-013-0192-x

Front Mater Sci

2013, Vol. 7

Issue (1) : 83-90 https://doi.org/10.1007/s11706-013-0192-x

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Circular dichroism of graphene oxide: the chiral structure model

Jing CAO^1,2, Hua-Jie YIN², Rui SONG¹(

)

1. College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; 2. Laboratory of Nanomaterials, National Center for Nanoscience and Technology, Beijing 100190, China

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Abstract

We have observed the circular dichroism signal of dilute graphene oxide (GO), then systematically investigated the chirality of GO and established a probable chiral unit model. This study may open up a new field for understanding the structure of GO and lay the foundation for fabrication of GO-based materials.

Keywords graphene oxide (GO) circular dichroism XPS chiral model

Corresponding Author(s): SONG Rui,Email:rsong@ucas.ac.cn

Issue Date: 05 March 2013

Cite this article:

Jing CAO,Hua-Jie YIN,Rui SONG. Circular dichroism of graphene oxide: the chiral structure model[J]. Front Mater Sci, 2013, 7(1): 83-90.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-013-0192-x
https://academic.hep.com.cn/foms/EN/Y2013/V7/I1/83

Fig.1 Typical TEM images of HGO, TGO, rHGO, and rTGO.

Fig.2 UV–Vis and CD absorption spectra of HGO and TGO in aqueous at room temperature with the concentration of about 20 μg/mL.

Fig.3 Typical XPS spectra of HGO and TGO.

Fig.4 CD spectra of HGO and rHGO and TGO and rTGO in aqueous at room temperature.

Fig.5 CD spectra of HGO in aqueous with different NaCl concentrations at room temperature.

Fig.6 Images represent possible synthesis route of graphene oxide. The blue ball C, and the red ball O.

Fig.7 Schematic illustrations of and . The ball-stick models illustrate the structures, the blue ball C, the red ball O, and the white ball H.

Fig.8 Schematic illustrations of and . The ball-stick models illustrate the structures, the blue ball C, the red ball O, and the white ball H.

Fig.9 Schematic diagram of HGO, TGO, and rHGO. The blue ball means the chiral unit and the red ball means the other chiral unit .

Fig.10 Schematic diagram of HGO without NaCl and HGO with the concentration of NaCl of 1 × 10 mol/L. The blue ball means the chiral unitand the red ball means the other chiral unit .

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