Confinement of Photopolymerization and Solidification with Radiation Pressure

详细信息    查看全文

• 作者：Syoji Ito ; Yoshito Tanaka ; Hiroyuki Yoshikawa ; Yukihide Ishibashi ; Hiroshi Miyasaka ; Hiroshi Masuhara
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：September 21, 2011
• 年：2011
• 卷：133
• 期：37
• 页码：14472-14475
• 全文大小：730K
• 年卷期：v.133,no.37(September 21, 2011)
• ISSN：1520-5126

文摘

Controlling chemical reactions within a small space is a significant issue in chemistry, and methods to induce reactions within a desired position have various potential applications. Here we demonstrate localized, efficient photopolymerization by radiation pressure. We induced a one-photon UV polymerization of liquid acrylate solutions in the optical-trapping potential of a focused near-IR (NIR) laser beam, leading to the confinement of solidification to a minute space with dimensions smaller or equal to one-fifth of the wavelength of the NIR laser. Our approach can produce solidification volumes smaller than those achievable with conventional one-photon polymerization, thus enabling the production of tiny polymeric structures that are smaller than the diffraction limit of the trapping light. This is the first demonstration of a radiation pressure effect on a photochemical reaction.