| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 봄 (04/08 ~ 04/09, 대전컨벤션센터) |
| 권호 |
35권 1호 |
| 발표분야 |
나노카본기반 응용기술 |
| 제목 |
Colloidal Properties of Graphene Oxide Aqueous Dispersion System |
| 초록 |
Liquid crystalline processing of carbon nanotubes as well as mesophase pitch, has been employed for highly oriented carbon fiber production. Discotic liquid crystals of graphitic hydrocarbons are promising building blocks for advanced electronics and optoelectronics. Here we present graphene oxide liquid crystal as a new class of carbon based liquid crystal. Aqueous dispersion of fully exfoliated graphene oxide sheets produced from natural graphite demonstrates nematic liquid crystals. Complete nematic transition occurred at a routinely attainable concentration of ~0.7 wt%. The electrostatic repulsion from surface functional groups along with the ultralarge anisotropy of graphene oxide sheets, dominates the phase behavior. |
| 저자 |
김지은, 한태희, 이선화, 황진옥, 박석한, 김현욱, 김주영, 이진아, 김상욱
|
| 소속 |
KAIST |
| 키워드 |
graphene; graphene oxide; colloid
|
| E-Mail |
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