AZO Polymers for Reversible Optical Storage

1992 ◽  
Vol 277 ◽  
Author(s):  
A. Natansohn ◽  
P. Rochon ◽  
J. Gosselin ◽  
S. Xie
Keyword(s):  
Second Harmonic ◽  
Optical Memory ◽  
Argon Laser ◽  
Optical Storage ◽  
Holographic Storage ◽  
Azo Polymers ◽  
Circularly Polarized ◽  
Writing Beam ◽  
Potential Applications ◽  
Azobenzene Groups

ABSTRACTAmorphous high-Tg polymers films containing electron-donor-electronacceptor substituted azobenzene groups can be used as reversible optical storage materials. Optical information can be “written” on the film with a polarized argon laser beam and “read” with a low power HeNe laser. Erasing can be performed with a circularly polarized writing beam. A significant number of writing/erasing cycles can be performed on the same spot. Potential applications in optical memory, holographic storage, waveguides and second harmonic generation are discussed.

Azo polymers for reversible optical storage. 8. The effect of polarity of the azobenzene groups

1995 ◽  
Vol 73 (11) ◽  
pp. 1773-1778 ◽  
Author(s):  
Mei-Sing Ho ◽  
A. Natansohn ◽  
C. Barrett ◽  
P. Rochon
Keyword(s):  
Optical Storage ◽  
Side Chain ◽  
Relaxation Rates ◽  
No Donor ◽  
Azo Polymers ◽  
Azobenzene Moiety ◽  
Donor Acceptor ◽  
Storage Properties ◽  
Effect Of Polarity ◽  
Azobenzene Groups

Poly[4′-[[(2-methacryloyloxy)ethyl]ethylamino]azobenzene] (pMAEA) was prepared. Its reversible optical storage properties were studied and compared with the properties of previously reported poly[4-(2-methacryloyloxy)ethylazobenzene] (pMEA) and poly[4-nitrophenyl-4′-[[2-(methacryloyloxy)ethyl]ethyl-amino]phenyldiazene] (pDR1M). The effect of the dipole moment of the azobenzene moiety on the optical storage properties was studied by comparing the photochemically induced birefringence "writing" and "relaxation" behaviors. The writing and relaxation rates are both in the order pDR1M > pMAEA > pMEA. In addition, pDR1M, which contains donor/acceptor substituents in the azobenzene side chain, exhibits the highest saturation level of optically induced birefringence. The fraction of birefringence conserved after relaxation is lowest for pMEA, which has no donor/acceptor substituents in the azobenzene side chain, and highest for pDR1M. Keywords: polymers, azobenzene type, birefringence, photochemically induced orientation, reversible optical storage.

Photo-induced variation of magnetism in coordination polymers with ligand-based electron transfer

2021 ◽  
Author(s):  
Yan-Lei Lu ◽  
Wen-Long Lan ◽  
Wei Shi ◽  
Qionghua Jin ◽  
Peng Cheng
Keyword(s):  
Electron Transfer ◽  
Coordination Polymers ◽  
Optical Memory ◽  
High Density ◽  
Information Storage ◽  
Memory Devices ◽  
Storage Materials ◽  
Potential Applications ◽  
Induced Variation

Photo-induced variation of magnetism from ligand-based electron transfer have been extensively studied because of their potential applications in magneto-optical memory devices, light-responsive switches, and high-density information storage materials. In this...

Azo Polymers for Reversible Optical Storage. 7. The Effect of the Size of the Photochromic Groups

1995 ◽  
Vol 28 (18) ◽  
pp. 6124-6127 ◽  
Author(s):  
M. S. Ho ◽  
A. Natansohn ◽  
P. Rochon
Keyword(s):  
Optical Storage ◽  
Azo Polymers

Circularly polarized luminescence from oriented polymer films doped with a tetraphenylethylene-based conjugated oligomer

2021 ◽  
Author(s):  
Wan Zhang ◽  
Baining Ni ◽  
Hongkun Li ◽  
Yonggang Yang ◽  
Yongfang Li ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Polymer Films ◽  
High Quantum Yield ◽  
Oriented Polymer ◽  
Active Materials ◽  
Circularly Polarized ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence ◽  
Potential Applications ◽  
Wide Potential

Circularly polarized luminescence (CPL) materials have attracted increasing interest due to their wide potential applications. However, achieving CPL-active materials with both large dissymmetry factor (glum) and high quantum yield (F)...

scholarly journals Polarization Controllable Device for Simultaneous Generation of Surface Plasmon Polariton Bessel-Like Beams and Bottle Beams

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 975 ◽  
Author(s):  
Peizhen Qiu ◽  
Taiguo Lv ◽  
Yupei Zhang ◽  
Binbin Yu ◽  
Jiqing Lian ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Near Field ◽  
Polarized Light ◽  
Simultaneous Generation ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Spatially Distributed ◽  
Potential Applications ◽  
Plasmon Polariton

Realizing multiple beam shaping functionalities in a single plasmonic device is crucial for photonic integration. Both plasmonic Bessel-like beams and bottle beams have potential applications in nanophotonics, particularly in plasmonic based circuits, near field optical trapping, and micro manipulation. Thus, it is very interesting to find new approaches for simultaneous generation of surface plasmon polariton Bessel-like beams and bottle beams in a single photonic device. Two types of polarization-dependent devices, which consist of arrays of spatially distributed sub-wavelength rectangular slits, are designed. The array of slits are specially arranged to construct an X-shaped or an IXI-shaped array, namely X-shaped device and IXI-shaped devices, respectively. Under illumination of circularly polarized light, plasmonic zero-order and first-order Bessel-like beams can be simultaneously generated on both sides of X-shaped devices. Plasmonic Bessel-like beam and bottle beam can be simultaneously generated on both sides of IXI-shaped devices. By changing the handedness of circularly polarized light, for both X-shaped and IXI-shaped devices, the positions of the generated plasmonic beams on either side of device can be dynamically interchanged.

Azo Polymers for Reversible Optical Storage. 6. Poly[4-[2-(methacryloyloxy)ethyl]azobenzene]

1995 ◽  
Vol 28 (12) ◽  
pp. 4179-4183 ◽  
Author(s):  
Almeria Natansohn ◽  
Paul Rochon ◽  
Mei-Sing Ho ◽  
Chris Barrett
Keyword(s):  
Optical Storage ◽  
Azo Polymers

Photochromism and photoswitchable luminescence in a Zn7 cluster-based metal-organic framework with organic guest

2021 ◽  
Author(s):  
Jian-Jun Liu ◽  
Jia-Jia Fu ◽  
Teng Liu ◽  
Chixian He ◽  
Feixiang Cheng
Keyword(s):  
Metal Organic Framework ◽  
Optical Memory ◽  
Memory Devices ◽  
Potential Applications ◽  
Metal Organic ◽  
Photochromic Materials ◽  
Organic Framework

Photochromic materials coupled with the photoswitchable luminescence functionalities are of particular interest due to their potential applications in switches and optical memory devices. However, construct such materials, especially those with...

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