Laser-controlled assembling of repulsive unimolecular micelles in aqueous solution

被引：29

作者：

Hotta, J

Sasaki, K ^{[1
]}

Masuhara, H

Morishima, Y

机构：

[1] Osaka Univ, Dept Appl Phys, Osaka 5650871, Japan

[2] Osaka Univ, Dept Macromol Sci, Osaka 5600043, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 40期

关键词：

D O I：

10.1021/jp9825866

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：

Laser manipulation techniques were applied to the control of molecular assembling in D2O. An amphiphilic random copolymer, which has hydrophilic and hydrophobic segments in a single chain and forms a monopolymer micelle through self-organization, is demonstrated to receive photon pressure of a focused near-infrared laser beam. Upon prolonged irradiation with the beam, a single microparticle is formed at a focal point, and it dissolves very quickly after switching off the laser beam. The behavior indicates that electrostatic repulsion between micelles is overcome by photon pressure. The assembling processes were examined as a function of irradiation time and polymer concentration and are discussed.

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收藏

页码：7687 / 7690

页数：4

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