由两亲性棒-线圈嵌段共聚物：聚（异氰酸正己酯）-嵌段-聚（2-乙烯基吡啶）形成胶束间链状和柱状胶束网络。

Formation of intermicellar-chained and cylindrical micellar networks from an amphiphilic rod-coil block copolymer: poly(n-hexyl isocyanate)-block-poly(2-vinylpyridine).

作者信息

Koh Haeng-Deog, Changez Mohammad, Rahman M Shahinur, Lee Jae-Suk

机构信息

Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Korea.

出版信息

Langmuir. 2009 Jul 7;25(13):7188-92. doi: 10.1021/la900641b.

DOI:10.1021/la900641b

PMID:19507816

Abstract

Morphologies of the poly(n-hexyl isocyanate)-block-poly(2-vinylpyridine) (PHIC-b-P2VP, fP2VP=0.3) amphiphilic rod-coil block copolymer were studied in rod-selective chloroform (CHCl3), both-block-soluble tetrahydrofuran (THF), and CHCl3/THF mixed solvent systems. Spherical, solid micelles with a P2VP core and PHIC shell were formed in CHCl3, whereas a microphase-separated liquid crystalline morphology was prominent in the presence of THF. In the CHCl3/THF mixed solvent system, a unique long-range intermicellar-chained network (v/v=7/3) and a more evolved cylindrical micellar network (v/v=3/7) were remarkably formed, respectively. PHIC-b-P2VP network nanostructures were used as a template for the in situ synthesis of Au nanoparticles (8 nm) selectively within the functional P2VP core domains.

摘要

在棒状选择性氯仿（CHCl₃）、两嵌段均溶的四氢呋喃（THF）以及CHCl₃/THF混合溶剂体系中，研究了聚（异氰酸正己酯）-嵌段-聚（2-乙烯基吡啶）（PHIC-b-P2VP，fP2VP = 0.3）两亲性棒-线圈嵌段共聚物的形态。在CHCl₃中形成了以P2VP为核、PHIC为壳的球形固体胶束，而在THF存在下微相分离的液晶形态较为突出。在CHCl₃/THF混合溶剂体系中，分别显著形成了独特的长程胶束间链状网络（v/v = 7/3）和更复杂的圆柱形胶束网络（v/v = 3/7）。PHIC-b-P2VP网络纳米结构被用作模板，用于在功能性P2VP核域内原位选择性合成8纳米的金纳米颗粒。