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
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
收藏
页码:534 / 538
页数:5
相关论文
共 15 条
[1]  
[Anonymous], 1998, NEAR FIELD NANO ATOM
[2]   Two-dimensional polymers investigated by scanning near-field optical microscopy: Phase separation of polymer blend monolayer [J].
Aoki, H ;
Ito, S .
JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (20) :4558-4564
[3]   Phase-separation structure of a monolayer of binary polymer blend studied by fluorescence scanning near-field optical microscopy [J].
Aoki, H ;
Sakurai, Y ;
Ito, S ;
Nakagawa, T .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (48) :10553-10556
[4]  
BERLMAN IB, 1973, ENERGY TRNASFER PARA
[5]   NEAR-FIELD OPTICS - MICROSCOPY, SPECTROSCOPY, AND SURFACE MODIFICATION BEYOND THE DIFFRACTION LIMIT [J].
BETZIG, E ;
TRAUTMAN, JK .
SCIENCE, 1992, 257 (5067) :189-195
[6]   MOLECULAR-WEIGHT AND POLYDISPERSITY EFFECTS AT POLYMER POLYMER INTERFACES [J].
BROSETA, D ;
FREDRICKSON, GH ;
HELFAND, E ;
LEIBLER, L .
MACROMOLECULES, 1990, 23 (01) :132-139
[7]   Scanning near-field optical microscopy with aperture probes: Fundamentals and applications [J].
Hecht, B ;
Sick, B ;
Wild, UP ;
Deckert, V ;
Zenobi, R ;
Martin, OJF ;
Pohl, DW .
JOURNAL OF CHEMICAL PHYSICS, 2000, 112 (18) :7761-7774
[8]   THEORY OF INTERFACE BETWEEN IMMISCIBLE POLYMERS .2. [J].
HELFAND, E ;
TAGAMI, Y .
JOURNAL OF CHEMICAL PHYSICS, 1972, 56 (07) :3592-&
[9]   Micro-Brownian motion of polymer segments in a monolayer at the air-water interface: A time-resolved study of intralayer energy transfer [J].
Ito, S ;
Oki, S ;
Sato, N ;
Yamamoto, M .
MACROMOLECULES, 1996, 29 (02) :724-729
[10]   Two-dimensional microphase separation of a block copolymer in a Langmuir-Blodgett film [J].
Kumaki, J ;
Hashimoto, T .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (02) :423-424