Preparation of macroporous carbon nanofibers with macroscopic openings in the surfaces and their applications.
Macroporous carbon nanofibers with mesoscale surface openings were produced by electrospinning. During the electrospinning of polyacrylonitrile (PAN) solution including crosslinked polymer colloids, the polymer colloids were concentrated in the center of PAN fibers. Carbonization left interconnected spherical pores inside the carbon fibers and mesoscale openings in the fiber surfaces. The existence of surface openings facilitated inward diffusion of various solvent molecules, nanoparticles, and large molecules such as proteins. The porous fibers could be dispersed in both hydrophilic and hydrophobic solvents and materials, which enabled production of polymer composites in which the fibers and polymers were interpenetrating through the pores. Silica coating on the macroporous carbon fibers enriched the surface chemistry to effectively immobilize proteins helped by easy diffusion through surface openings.
Department of Materials Science and Engineering, Yonsei Universivty, 134 Shinchon-dong, Seoul, Korea.
Sungwon
S
Lee
Kipoong
K
Lee
Geon Dae
GD
Moon
Yong Sun
YS
Won
Yeo-Joo
YJ
Yoon
Sung Soo
SS
Park
Young-Rok
YR
Kim
Unyong
U
Jeong
D000180:Acrylic Resins / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry; D017097:Electric Impedance; D049452:Green Fluorescent Proteins / Q000737:chemistry; D006358:Hot Temperature; D017953:Isocyanates / Q000737:chemistry; D008854:Microscopy, Electron; D008856:Microscopy, Fluorescence; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D019904:Polymethyl Methacrylate / Q000737:chemistry; D016062:Porosity; D045663:Quantum Dots; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013010:Sonication
C514436:3-isocyanatopropyl trimethoxysilane; D000180:Acrylic Resins; D003102:Colloids; D017953:Isocyanates; D012821:Silanes; D012997:Solvents; D049452:Green Fluorescent Proteins; C010504:polyacrylonitrile; D002244:Carbon; D012822:Silicon Dioxide; D019904:Polymethyl Methacrylate