Phase-separation structure of a monolayer of binary polymer blend studied by fluorescence scanning near-field optical microscopy
被引:25
作者:
Aoki, H
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h-index: 0
机构:
Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, JapanKyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, Japan
Aoki, H
[1
]
Sakurai, Y
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h-index: 0
机构:
Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, JapanKyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, Japan
Sakurai, Y
[1
]
Ito, S
论文数: 0引用数: 0
h-index: 0
机构:
Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, JapanKyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, Japan
Ito, S
[1
]
Nakagawa, T
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h-index: 0
机构:
Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, JapanKyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, Japan
Nakagawa, T
[1
]
机构:
[1] Kyoto Univ, Grad Sch Engn, Dept Polymer Chem, Kyoto 6068501, Japan
来源:
JOURNAL OF PHYSICAL CHEMISTRY B
|
1999年
/
103卷
/
48期
关键词:
D O I:
10.1021/jp992228i
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:
A phase-separated monolayer of a binary mixture of pyrene-labeled poly(isobutyl methacrylate) (PiBMA-Py) and perylene-labeled poly(octadecyl methacrylate) (PODMA-Pe) was investigated by the fluorescence scanning near-field optical microscope (SNOM); which provided optical images of samples with a high resolution beyond the diffraction limit, by using evanescent field from an aperture smaller than the wavelength of light. Each phase of the PiBMA-Py/PODMA-Pe was selectively imaged as a bright area by choosing the excitation wavelength (325- or 442-nm line of a He-Cd laser). The fluorescence SNOM enabled mapping of the excitation energy transfer efficiency on the monolayer plane. The energy transfer measurement revealed that the phase separation of the PiBMA-Py/PODMA-Pe blend at the air/water interface was almost completed by annealing for 60 min at 40 degrees C and the phase boundary had a width of a few hundred nanometers.