使用气相沉积聚合合成同轴纳米管.ppt

Coaxial Nanotubes (同轴纳米管) Using Vapor Deposition Polymerization HU Liusen* Kaden K.D. YUAN ** WEI Xiantao * YAN Wuzhao * and ZHAO Jiangbo * *Department of Physics, USTC **Shanghai Institute of Ceramics, CAS Various Ways of Fabricating Nano-tubes(1): Self-assembly Various Ways of Fabricating Nano-tubes(2): Organic-template Various Ways of Fabricating Nano-tubes(3): Catalyst-assisted Various Ways of Fabricating Nano-tubes(4): AAO Template Method Anode Aluminum Oxide (AAO) Dimensions of AAO Holes Vapor Deposition Polymerization: Chemistry Vapor Deposition Polymerization Vapor Deposition Polymerization Fabricating of PAN Tubes PAN-dye-PAN Coaxial Nanotubes(1) PAN-dye-PAN Coaxial Nanotubes(2) TEM Images of PAN Tubes TEM Images of PAN-dye-PAN Shining Point :Coaxial nanotubes to embed other materials Conclusions AAO Template Vapor Deposition of PAN Coaxial Nanotubes References Additional Thinking:Can we see/feel a long nanobute? The wavelength of visible light is ~600nm, while the diameter of a nanotube is ~100nm. * * 60 microns 100nm Diameter : Length = 1 : 600 Acrylonitrile? Polycrylonitrile (PAN) 聚丙烯腈. initiator Step A: Injection of radical initiator solution At R.T., 10-2Torr 0.02g 2,2-Azo-bis-(2,4-dimethylvaleronitrile) in 0.6ml heptane (庚烷) Step B: AN monomer, dissolved in heptane, was fed into the reactor, and VDP was carried out at 70℃ for 6 h. Etching Step C: Etching, using 4M HCl Injection of radical initiator Injection of monomer and polymerization Etching Tunable wall thickness by adjusting the volume ratio of the monomer/heptane ~38nm ~25nm ~12nm Thickness 0.45:0.15 0.30:0.30 0.15:0.45 AN/heptane Right Middle Left PAN tube PAN-dye-PAN dye Fabrication of Photoluminescent Dyes/Poly(acrylonitrile) Coaxial Nanotubes Using Vapor Deposition Polymerization. Kyung Jin Lee, Joon Hak Oh. Chem. Mater. 2006, 18, 5002-5008 [Invited paper] Template-based Synthesis of Nanomaterials. A. Huczko. Appl. Phys. A 70, 365–376 (2000). Nanoparticle Nanot