Two-dimensional phase separation of block copolymer and homopolymer blend studied by scanning near-field optical microscopy

被引：24

作者：

Aoki, H

Kunai, Y

Ito, S

Yamada, H

Matsushige, K

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Elect Sci & Engn, Kyoto 6068501, Japan

[2] Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, Japan

来源：

APPLIED SURFACE SCIENCE | 2002年 / 188卷 / 3-4期

关键词：

scanning near-field optical microscopy; polymer; Langmuir-Blodgett film; phase separation; energy transter;

D O I：

10.1016/S0169-4332(01)00967-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phase separation of dye-labeled poly(isobutyl methacrylate) (PiBMA) and poly(octadecyl methacrylate) (PODMA) in two-dimensional monolayers was investigated by scanning near-field optical microscopy (SNOM). The energy transfer (ET) efficiency between dyes introduced to the polyiners was mapped with SNOM for a PiBMA/PODMA homopolymer blend monolayer. The ET fluorescence images revealed that the phase boundary had a width of a few hundred nanometers. which was considerably larger than that expected in a three-dimensional bulk state. The micro-phase separation of a diblock copolymer PiBMA-block-PODMA was also discussed. Ribbort-like lamellar structures with a width of ca. 300 nm were observed. and the block polymer chain took a highly elongated conformation in two dimensions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：534 / 538

页数：5

共 15 条

[11]

NAKAHARA T, 1966, J POLYM SCI A, V2, P649

[12] Phase separation morphology of a mixed polymer monolayer [J].