A novel route for the preparation of discrete nanostructured carbons from block copolymers with polystyrene segments

被引：19

作者：

Huang, Jinyu ^{[1
]}

Tang, Chuanbing ^{[1
]}

Lee, Hyungil ^{[1
]}

Kowalewski, Tomasz ^{[1
]}

Matyjaszewski, Krzysztof ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2007年 / 208卷 / 21期

关键词：

atom transfer radical polymerization (ATRP); block copolymers; molecular brush; nanostructured carbon; photocross-linking;

D O I：

10.1002/macp.200700355

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Well-defined nanostructured carbon was prepared by pyrolysis of core cross-linked micelles formed from block copolymers containing polystyrene segments. These micelles were obtained by self-assembly of poly(ethylene oxide)-block-polystyrene (PEO113-b-PS52) diblock copolymer or brush macromolecules containing polymethacrylate backbone and side chains with PS and poly(acrylic acid) block segments (PBPEM330-g-PS40-b-PAA(111)) in selective solvents. UV irradiation was used to induce cross-linking of the PS core in the micelles. After pyrolysis, the cross-linked PS cores were converted to a partially graphitic carbon, while the shells were sacrificed, resulting in the formation of discrete carbon nano-objects. The formation of carbon material was confirmed by Raman scattering spectroscopy while the morphology of the precursor and the resulting pyrolyzed product was studied by atomic force microscope (AFM).

引用

页码：2312 / 2320

页数：9