Influence of CdSe/ZnS Quantum Dots in the Polymerization Process and in the Grating Recording in Acrylate Materials

被引：9

作者：

Barichard, Anne ^{[1
,2
,3
]}

Galstian, Tigran ^{[3
]}

Israeli, Yael ^{[1
,2
]}

机构：

[1] Univ Blaise Pascal, Clermont Univ, Photochim Mol & Macromol Lab, F-63000 Clermont Ferrand, France

[2] CNRS, UMR 6505, Photochim Mol & Macromol Lab, F-63177 Clermont Ferrand, France

[3] Univ Laval, Ctr Opt Photon & Laser, Dept Phys Engn Phys & Opt, Quebec City, PQ G1V 0A6, Canada

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2010年 / 114卷 / 46期

基金：

加拿大自然科学与工程研究理事会;

关键词：

DISTRIBUTION MORPHOLOGY; 3-COMPONENT SYSTEM; PHOTOPOLYMER; NANOPARTICLES; EFFICIENCY; DIFFRACTION; INDEX;

D O I：

10.1021/jp1040713

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

The initiation step of the polymerization of acrylate materials is first studied in detail by UV-visible spectroscopy, showing the involvement of each species of the three-component photosensitizer. Then, the implementation of a combined holographic and physicochemical investigation approach is used to determine the influence of photoluminescent CdSe/ZnS quantum dots (QDs) in the photopolymerization and grating recording process in composites containing those QD nanoparticles. The fluorescence microscopy evidences the dynamic distribution profile of QDs due to their diffusion from the irradiated zones to the interface between the bright and the dark zones and, finally, their accumulation in nonirradiated zones. At the same time, the infrared spectroscopy shows that the presence of QDs provides a noticeable decrease of the polymerization rate, which favors the diffusion of the monomer and QDs. These two phenomena contribute to the enhancement of the refractive index modulation depth.

引用

页码：14807 / 14814

页数：8

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