Study on holographic characteristics in ZnMA doped PQ-PMMA photopolymer

Dai, Yu; Liu, Hongpeng; Wang, Jian; Jiang, Yongyuan; Sun, Xiaohan

doi:10.1016/j.optcom.2011.02.055

Cited by 25 publications

(12 citation statements)

References 22 publications

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“…Through this demonstration of the holographic data storage characteristics, we confirm that the properties of the PMMA/PQ photopolymer were further enhanced in the presence of DMNA [23]. On the basis of this result, and taking advantage of previous findings [16–23], we selected DMNA for codoping with the organometallic compound Zn(MA) 2 into the PMMA/PQ photopolymer.…”

Section: Resultssupporting

confidence: 67%

“…The recording mechanism of the grating involves reactions between the PQ molecules and residual MMA monomer. Doping with organometallic compounds, such as zinc methacrylate [Zn(MA) 2 ] [16–20], can be used to improve the holographic recording characteristics of PMMA/PQ photopolymers. The addition of Zn(MA) 2 is not only to provide a catalyst to enhance the photoreaction between PQ and MMA molecules via the Zn ions in the Zn(MA) 2 molecules, but also increase the number of reactants for photoreaction [16, 20].…”

Section: Introductionmentioning

confidence: 99%

“…The compounds with a higher dipole moment led to higher birefringence by the exposed samples and increased the holographic recording characteristics. Therefore, taking advantage of previous research [9, 16–23], in this study we codoped Zn(MA) 2 and nitroaniline into the PMMA/PQ photopolymer to enhance its holographic storage capacity and recording characteristics, as measured in terms of diffraction efficiency and dynamic range (M#). We also propose herein a recording mechanism, deduced from mass spectrometric and X‐ray photoelectron spectroscopic analyses.…”

Section: Introductionmentioning

confidence: 99%

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Holographic recording characteristics and physical mechanism of zinc methacrylate/nitroaniline‐co‐doped poly(methyl methacrylate)/9,10‐phenanthrenequinone photopolymers

Chen

Hsiao

et al. 2012

Polymer Engineering & Sci

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In this study we developed an approach to improve the characteristics of photopolymers for holographic data storage. Through codoping different compounds, N,N‐dimethyl‐4‐nitroaniline (DMNA) and zinc methylacrylate (Zn(MA)2), into 9,10‐phenanthrenequinone (PQ) doped poly(methyl methacrylate) (PMMA), the diffraction efficiency and the value of dynamic range (M#) have been progressed. We enhanced the diffraction efficiency (from 36.1 to 86.2%) and the dynamic range (M#, from 2.9 to 10.7) of PQ‐doped PMMA through codoping with DMNA and Zn(MA)2. Using mass spectrometry and X‐ray photoelectron spectroscopy, we investigated the mechanism behind the improvements in optical storage induced by the presence of Zn(MA)2 and DMNA in PMMA/PQ. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Holographic recording characteristics and physical mechanism of zinc methacrylate/nitroaniline‐co‐doped poly(methyl methacrylate)/9,10‐phenanthrenequinone photopolymers

Chen

Hsiao

et al. 2012

Polymer Engineering & Sci

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“…However, when we examined the response time of a single shot DDEP, a different trend was found compared with the impact of long-time exposure, as shown in Figure 9 . Here, we defined the response time as the exponential fitting constant in the temporal evolution of the diffraction efficiency [ 33 ]. After single shot exposure, the response time declined with the increment in the single shot duration.…”

Section: Resultsmentioning

confidence: 99%

Holographic Grating Enhancement of TI/PMMA Polymers in the Dark Diffusion Process

Liu

Sun

2021

Polymers

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The dark diffusion enhancement process (DDEP) caused by photopolymerization during the pre-exposure of TI/PMMA (titanocene dispersed methyl methacrylate matrix) polymers was theoretically analyzed and experimentally investigated, revealing the holographic grating enhancement of TI/PMMA polymers in the post-exposure process without additional operations. The diffusion of photo-initiators and photoproducts dominated the grating enhancement process after exposure. We adopted two pre-exposure methods, long-time (second level) and short-time (millisecond level) laser exposure, at 532 nm, to investigate the DDEP during the post-exposure process. A five-fold enhancement in grating strength was achieved in consecutive long-time pre-exposures, while a two-fold grating development was examined after short-time exposure. Additionally, the exposure durations and repetition rates influenced the grating increment of the DDEP. This study provided a basis for the feasibility of holographic application in TI/PMMA photopolymers via the dark diffusion effect.

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“…Indeed, in their investigation of the poly(methyl methacrylate) (PMMA)phenanthrenequinone (PQ), Sun et al pointed out that addition of zinc methacrylate (ZnMA) in the media resulted in a higher diffraction efficiency compared to that for undoped PQ-PMMA. 22,23 ZnMA played a twofold role during the recording process: it accelerated the initiation rate of PQ molecules and acted as a reactant through its double bonds. Briey, upon irradiation, the phenanthrenequinone in combination with ZnMA formed radical-ion pairs.…”

Section: Introductionmentioning

confidence: 99%

Acrylate photopolymer doped with ZnO nanoparticles: an interesting candidate for photo-patterning applications

et al. 2013

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International audienceThe study is devoted to the photo-patterning of photopolymers doped with dispersed ZnO quantum dots (QDs). It is checked first that ZnO QDs retain their fluorescence properties upon polymerization of the acrylate monomer mixtures. The photosensitizer (camphorquinone in our work, CQ) plays an important role in the polymerization process. Experimental and theoretical investigations are undertaken to understand the observed differences induced by the addition of a tertiary amine co-initiator species. Indeed, it is shown experimentally that in the presence of a co-initiator, when the maximum of monomer conversion is reached, the concentration of camphorquinone starts to decrease, whereas a new compound that absorbs at 390 nm is produced. It is proposed here on the basis of theoretical calculations that this species is the charge transfer complex [CQc /aminec+], which is stabilized in high viscous media. Then, it was shown that the addition of ZnO QDs does not modify the kinetics of polymerization but rather contributes to the enhancement of the refractive index modulation (an increase of 33% is observed) because of their spatial distribution

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Study on holographic characteristics in ZnMA doped PQ-PMMA photopolymer

Cited by 25 publications

References 22 publications

Holographic recording characteristics and physical mechanism of zinc methacrylate/nitroaniline‐co‐doped poly(methyl methacrylate)/9,10‐phenanthrenequinone photopolymers

Holographic recording characteristics and physical mechanism of zinc methacrylate/nitroaniline‐co‐doped poly(methyl methacrylate)/9,10‐phenanthrenequinone photopolymers

Holographic Grating Enhancement of TI/PMMA Polymers in the Dark Diffusion Process

Acrylate photopolymer doped with ZnO nanoparticles: an interesting candidate for photo-patterning applications

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