Study on the rewritability of bisazobenzene-containing films in optical storage based on two-photon process

Hu, Daqiao; Zhang, Zhoushun; Hu, Yanlei; Luo, Yanhua; Zhang, Qijin; Huang, Wenhao

doi:10.1016/j.optcom.2010.09.068

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…Finally, new data could be subsequently rewritten in the same material area aer erasing. 146 Those ndings have been also conrmed by other studies. 147 Moreover, the growth and decay of the birefringence were examined as functions of the pulse intensities for azo-dye bearing polyimide.…”

Section: Application Of Tpe Of Azobenzene Derivatives In Materials Scsupporting

confidence: 53%

“…19). 146 It was found out that, indeed, the data can be recorded by linearly polarized light and then erased by either circularly or linearly polarized light, however in the case of the erasing, the linear polarization of the beam needs to be perpendicular to that of the recording beam. Finally, new data could be subsequently rewritten in the same material area aer erasing.…”

Section: Application Of Tpe Of Azobenzene Derivatives In Materials Scmentioning

confidence: 99%

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Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

et al. 2020

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Section: Application Of Tpe Of Azobenzene Derivatives In Materials Scsupporting

confidence: 53%

Section: Application Of Tpe Of Azobenzene Derivatives In Materials Scmentioning

confidence: 99%

Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

et al. 2020

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“…These high luminescent and optically switchable materials could be promising candidates for displays, colour filters, light modulators, data storage, second harmonic generation, etc. [27][28][29][30][31][32][33][34]…”

Section: Introductionmentioning

confidence: 99%

“…In this way, a highly fluorescent hybrid material with polarization–fluorescence (blue/green) color switching is achieved depending on the direction of the polarizers upon UV excitation light. These high-luminescent and optically switchable materials could be promising candidates for displays, color filters, light modulators, data storage, second-harmonic generation, etc. − …”

mentioning

confidence: 99%

Highly Luminescent and Optically Switchable Hybrid Material by One-Pot Encapsulation of Dyes into MgAPO-11 Unidirectional Nanopores

et al. 2014

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In this work a highly fluorescent hybrid material with strong anisotropic response is obtained by "one-pot" synthesis. The system is based on the "in situ" encapsulation of two chromophores, Acridine (AC) and Pyronine Y (PY), with similar molecular structure but perpendicular dipole moment vectors, into the 1D-nanochannels of MgAPO-11 aluminophosphate crystals (AEL structure). This nondiffusional limited synthetic approach allows the filling of very long channels reducing considerably the time of sample preparation (>10 μm rectangular-like AEL particles), as well as a perfect fit between the molecular and channel dimensions avoiding the leakage of the guest dyes and any Davidov coupling. As a consequence, both dyes are embedded only in momomeric units and preferentially aligned with their long molecular axes along the channels. Interestingly, the less bulky nature of AC without pendant groups leads to a much stronger incorporation with respect to PY (48:1), enabling an efficient FRET process between them. The final solid hybrid material shows fluorescent quantum yields higher than the respective dyes in diluted solution together with blue (AC)/green (PY) fluorescence colour switching depending on the direction of the polarizers upon UV light excitation.

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“…2) Commonly, the photochromic molecules stay in the trans form in the dark state since the transisomers are the lowest energy configuration and are generally more thermally stable compared to the cis-isomers. Because of these properties, MR as a photochromic organic material can be applied to optical devices, 3,4) photoregulation of biomolecules, 5,6) photovoltaic devices, 7,8) and liquid crystal alignment systems. 9,10) Nonlinear optical properties and photoinduced birefringence in the MR-doped polyvinyl alcohol polymer films were studied using a single-beam Z-scan technique.…”

Section: Introductionmentioning

confidence: 99%

Structural, thermal, spectroscopic, and spectral dispersion studies of nanocrystalline methyl red thin films

Makhlouf

El-Denglawey

2018

Jpn. J. Appl. Phys.

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Methyl red (MR) powder is polycrystalline structure as-purchased. The uniform, homogeneous and no cracks nano MR thin films are successfully prepared using thermal evaporation technique. The structural investigation for the pristine, annealed and UV irradiated MR films shows nanorods spread in amorphous medium. The part of as-prepared films exposed to UV light irradiation of wavelength 254 nm and intensity of 2000 µW/cm2 for 1 h, while the other part of films was treated by the annealing temperature at 178 °C for 1 h. The optical properties of MR thin films were investigated using spectrophotometric measurements of the transmittance and reflectance at normal incidence in the spectral range 200–2000 nm. The optical constants, dispersion parameters, and energy loss and dielectric functions of MR thin films were calculated and showed remarkable dependence on UV irradiation and annealing temperature upon the films of MR. The dependence of absorption coefficient on the photon energy were analyzed and the results showed that MR films undergo direct allowed optical transition for pristine, annealed and irradiated MR films.

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Study on the rewritability of bisazobenzene-containing films in optical storage based on two-photon process

Cited by 5 publications

References 25 publications

Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

Two-photon absorption and two-photon-induced isomerization of azobenzene compounds

Highly Luminescent and Optically Switchable Hybrid Material by One-Pot Encapsulation of Dyes into MgAPO-11 Unidirectional Nanopores

Structural, thermal, spectroscopic, and spectral dispersion studies of nanocrystalline methyl red thin films

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