Li Xue, Tian Shengjun, Ping Yang, Kim Dong Ha, Knoll Wolfgang
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Langmuir. 2005 Oct 11;21(21):9393-7. doi: 10.1021/la0514009.
We report a new method to control both the nucleation and growth of highly porous polyaniline (PANI) nanofiber films using porous poly(styrene-block-2-vinylpyridine) diblock copolymer (PS-b-P2VP) films as templates. A micellar thin film composed of P2VP spheres within a PS matrix is prepared by spin coating a PS-b-P2VP micellar solution onto substrates. The P2VP domains are swollen in a selective solvent of acetic acid, which results in the formation of pores in the block copolymer film. PANI is then deposited onto the substrates modified with such a porous film using electrochemical methods. During the deposition, the nucleation and growth of PANI occur only at the pores of the block copolymer film. After the continued growth of PANI by the electrochemical deposition, a porous PANI nanofiber film is obtained.
我们报道了一种新方法，该方法以多孔聚（苯乙烯 - 嵌段 - 2 - 乙烯基吡啶）二嵌段共聚物（PS - b - P2VP）薄膜为模板，来控制高度多孔的聚苯胺（PANI）纳米纤维薄膜的成核和生长。通过将PS - b - P2VP胶束溶液旋涂到基底上，制备出由PS基质内的P2VP球体组成的胶束薄膜。P2VP域在乙酸的选择性溶剂中溶胀，这导致在嵌段共聚物薄膜中形成孔隙。然后使用电化学方法将聚苯胺沉积到用这种多孔薄膜改性的基底上。在沉积过程中，聚苯胺的成核和生长仅发生在嵌段共聚物薄膜的孔隙处。通过电化学沉积使聚苯胺持续生长后，获得了多孔聚苯胺纳米纤维薄膜。
