Influence of thiol on the holographic properties of silica nanoparticle-embedded acrylate photopolymer films

Ling, Furi; Li, Dan; Zhang, Hai; Yao, Jianquan

doi:10.1016/j.optmat.2008.03.006

Cited by 3 publications

(2 citation statements)

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“…Yao et al have demonstrated that the introduction of thiol in the nanoparticle-dispersed monomer mixture not only reduced the inhibition period but also improved the diffraction efficiency and the recording sensitivity. 33 Recently, we have been involved in the study of an acrylate photopolymer composition that was doped with CdSe/ZnS quantum dots (QDs). 34 The fluorescence property of QDs was used as a probe to directly evidence the photoinduced diffusion of QDs in the photopolymerizable mixture.…”

Section: Introductionmentioning

confidence: 99%

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

2010

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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.

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Section: Introductionmentioning

confidence: 99%

“…This feature was ascribed to the presence of oxygen, which could inhibit the polymerization. Yao et al have demonstrated that the introduction of thiol in the nanoparticle-dispersed monomer mixture not only reduced the inhibition period but also improved the diffraction efficiency and the recording sensitivity …”

Section: Introductionmentioning

confidence: 99%