使用气相沉积聚合合成同轴纳米管

1、Coaxial Nanotubes (同轴纳米管同轴纳米管) Using Vapor Deposition PolymerizationlHU Liusen*lKaden K.D. YUAN *lWEI Xiantao *lYAN Wuzhao * andlZHAO Jiangbo * *Department of Physics, USTC*Shanghai Institute of Ceramics, CASVarious Ways of Fabricating Nano-tubes(1): Self-assemblyVarious Ways of Fabricating Nano-tub

2、es(2): Organic-templateVarious Ways of Fabricating Nano-tubes(3): Catalyst-assisted Various Ways of Fabricating Nano-tubes(4): AAO Template MethodlAnode Aluminum Oxide (AAO)60 microns100nmDiameter : Length = 1 : 600Dimensions of AAO HolesVapor Deposition Polymerization: ChemistryAcrylonitrile Polycr

3、ylonitrile (PAN)聚丙烯腈. initiatorVapor Deposition PolymerizationStep A: Injection of radical initiator solutionAt R.T., 10-2Torr 0.02g 2,2-Azo-bis-(2,4-dimethylvaleronitrile) in 0.6ml heptane (庚烷)Vapor Deposition PolymerizationStep B:AN monomer, dissolved in heptane, was fed into the reactor, and VDP

4、was carried out at 70 for 6 h.Fabricating of PAN Tubes EtchingStep C:Etching, using 4M HClPAN-dye-PAN Coaxial Nanotubes(1)Injection of radical initiatorInjection of monomer and polymerizationEtchingPAN-dye-PAN Coaxial Nanotubes(2)TEM Images of PAN TubesTunable wall thickness by adjusting the volume

5、ratio of the monomer/heptaneLeftMiddleRightAN/heptane0.15:0.450.30:0.300.45:0.15Thickness12nm25nm38nmTEM Images of PAN-dye-PANPAN tubePAN-dye-PANdyeShining Point :Coaxial nanotubes to embed other materialsConclusionslAAO Template lVapor Deposition of PANlCoaxial NanotubesReferencesFabrication of Pho

6、toluminescent Dyes/Poly(acrylonitrile) Coaxial Nanotubes Using Vapor Deposition Polymerization. Kyung Jin Lee, Joon Hak Oh. Chem. Mater. 2006, 18, 5002-5008Invited paper Template-based Synthesis of Nanomaterials. A. Huczko. Appl. Phys. A 70, 365376 (2000).Nanoparticle Nanotubes. Michal Lahav, Tali S

7、ehayek, Alexander Vaskevich, and Israel Rubinstein*. Angew. Chem. Int. Ed. 2003, 42, 5575Polyacrylonitrile Single-Walled Carbon Nanotube Composite Fiblers. Thaliyil V. Sreekumar, Tao Liu. Adv. Mater. 2004, 16A facile Method for Creating an Array of Metal-Filled Carbon Nanotubes. Jianchun Bao, Chenyang Tie. Adv. Mater. 2002, 14Additional Thinking:Can we see/f