Photo-induced birefringence and polarization holography in polymer films containing spirooxazine compounds pre-irradiated by UV light

Fu, Shencheng; Liu, Yichun; Lu, Zifeng; Dong, Lin; Hu, Wenqian; Xie, Meihua

doi:10.1016/j.optcom.2004.08.022

Cited by 22 publications

(11 citation statements)

References 17 publications

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“…Most experiments published to date have been performed on azobenzene‐containing materials,26–32 less attention being paid to other photochromic systems such as spiropyrans and spiroxazines,23, 33, 34 diarylethenes,24 and bacteriorhodopsin 35–38. The most frequently studied azobenzene derivatives have been disperse‐type dyes such as the 4‐ N ‐(2‐hydroxyethyl)‐ N ‐ethyl‐amino‐4′‐nitroazobenzene molecule, which is usually called Disperse Red 1, either dissolved in a polymer matrix (guest–host system) or chemically attached to a polymer chain.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of photoinduced birefringence in the guest–host system of poly(methyl methacrylate) doped with azobenzene‐containing crown ethers

Shimizu

Volpati

Giacometti

et al. 2007

J of Applied Polymer Sci

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The kinetics of the buildup and decay of photoinduced birefringence was examined in a series of host-guest systems: azobenzene-containing crown ethers, differing in the size of the crowns, dissolved in a poly (methyl methacrylate) matrix. In all samples, the kinetics of the buildup of the birefringence was reasonably described by a sum of two exponential functions, the time constants being inversely proportional to the intensity of the pumping light and the magnitudes of the signals at the saturation level depending on the pumping light intensity and sample thickness. The dark decays were best described by the stretched exponential function, with the characteristic parameters (time constant and stretch coefficient) being practically independent of the type of crown ether. The time constants of the signal decay were orders of magnitude shorter than the respective constants of the dark isomerization of the azo crown ethers, thus indicating that the process controlling the decay was a relaxation of the polymer matrix and/or a rearrangement of the flexible parts of the crowns.

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Section: Introductionmentioning

confidence: 99%

Kinetics of photoinduced birefringence in the guest–host system of poly(methyl methacrylate) doped with azobenzene‐containing crown ethers

Shimizu

Volpati

Giacometti

et al. 2007

J of Applied Polymer Sci

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“…(5) represent the time dependency of B in dark and bright regions. For s-s polarized holographic gratings in spirooxazine doped polymers, absorption grating is the major part and thus the refractive index grating can be neglected [7]. So the diffraction efficiency (ratio between intensities of the first-order diffracted beam and the incident beam, DE) of the thin amplitude gratings can be given as…”

Section: Holographic Grating Dynamicsmentioning

confidence: 99%

Photochromism of spirooxazine-doped polymers studied by monitoring dynamics of holographic gratings

Xie

Zheng

et al. 2015

Selected Papers From Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part

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As an organic photochromic material, spirooxazine attracted widespread attention because of its high fatigue resistance and thermal stability. In this paper, the photochromism of spirooxazine was studied by monitoring the dynamics of holographic gratings in spirooxazine-doped polymer films. A theoretical description for the transformation of spirooxazine and merocyanine molecules was carried out, which agrees well with the experimental results. The photochromism of spirooxazine-doped different matrixes were studied, the photochromic rate and fatigue resistance of spirooxazine-doped SiO 2 films were found to be better than spirooxazine-doped PMMA films.

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“…Every time an azo chromophore undergoes a trans to cis to trans isomerization cycle, its position will vary slightly and randomly, which drive the molecules to align with their major axis perpendicularly to the polarization axis of the incident light [18,23,24]. A high polarizability along the long molecular axis of the azobenzene fragments in the trans conformation determines birefringence effects for the light outside the absorption band [25][26][27] index (n e ) for the light polarized along the long molecular axis is bigger than the refractive indices (n o ) in all directions perpendicular to the long molecular axis.…”

Section: Introductionmentioning

confidence: 99%

Single-exposure polarization phase-shifting interferometer using an azo-polymer orientation array

Yan

Wang

Cui

et al. 2015

Optics and Lasers in Engineering

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Photo-induced birefringence and polarization holography in polymer films containing spirooxazine compounds pre-irradiated by UV light

Cited by 22 publications

References 17 publications

Kinetics of photoinduced birefringence in the guest–host system of poly(methyl methacrylate) doped with azobenzene‐containing crown ethers

Kinetics of photoinduced birefringence in the guest–host system of poly(methyl methacrylate) doped with azobenzene‐containing crown ethers

Photochromism of spirooxazine-doped polymers studied by monitoring dynamics of holographic gratings

Single-exposure polarization phase-shifting interferometer using an azo-polymer orientation array

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