Large-Area, Highly Ordered Array of Graphitic Carbon Materials Using Surface Active Chitosan Prepatterns.
We demonstrate that chitosan prepatterns can generate not only highly periodic DNA pattern but also various types of graphitic carbon materials such as single-walled carbon nanotubes (SWNTs), graphene oxide (GO) and reduced graphene oxide (RGO). Scanning electron microscopy (SEM), fluorescence imaging and Raman spectroscopic results revealed that the graphitic carbon materials were selectively deposited on the surface of the periodic chitosan patterns by the electrostatic interaction between protonated amine groups of chitosan and the negative charged carbon materials. One proof-of-concept application of the system to the fabrication of electrical devices based on the micropatterns of SWNTs and RGO was also demonstrated. The strategy to use highly surface active chitosan pattern that can easily fabricate highly periodic pattern via a variety of lithographic tools may pave the way for the production of periodic arrays of graphitic carbon materials for large area device integration.
Youn-Kyoung
YK
Baek
Dae Woo
DW
Kim
Seung Bo
SB
Yang
Jung-Goo
JG
Lee
Young Kuk
YK
Kim
Hee-Tae
HT
Jung
D048271:Chitosan / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D004553:Electric Conductivity; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D008422:Materials Testing; D054802:Molecular Imprinting / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry; D010316:Particle Size; D012666:Semiconductors; D013501:Surface-Active Agents / Q000737:chemistry
D037742:Nanotubes, Carbon; D010087:Oxides; D013501:Surface-Active Agents; D006108:Graphite; D048271:Chitosan