- SECOND-ORDER NONLINEAR OPTICAL COMPOUND AND NONLINEAR OPTICAL ELEMENT COMPRISING THE SAME
-
Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a π-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
- -
-
Page/Page column 115
(2012/07/14)
-
- Nonlinear optical side-chain polymers post-functionalized with high-β chromophores exhibiting large electro-optic property
-
Electro-optic side-chain polymers have been synthesized by the post-functionalization of methacrylate isocyanate polymers with novel phenyl vinylene thiophene vinylene bridge (FTC) nonlinear optical chromophores. For this application, FTC-based chromophores were modified in their electronic donor structure, exhibiting much larger molecular hyperpolarizabilities compared with the benchmark FTC. Of these new chromophores, absorption spectra, hyper-Rayleigh scattering experiment, and thermal analysis were carried out to confirm availability as effective nonlinear optical units for electro-optic side-chain polymers. The electro-optic coefficients (r33) of obtained polymers were investigated in the process of in situ poling by monitoring the temperature, current flow, poling field, and electro-optic signal. Compared with the nonsubstituted analogue, benxyloxy modified FTC chromophore significantly achieved higher nonlinear optical property, exhibiting molecular hyperpolarizability at 1.9 μm of 4600 × 10-30 esu and an r33 value of 150 pm/V at the wavelength of 1.31 μm. Synthesized electro-optic polymers showed high glass transition temperature (Tg), so that the temporal stability examination exhibited >78% of the electro-optic intensity remaining at 85 °C over 500 h. Copyright
- Piao, Xianqing,Zhang, Xianmin,Mori, Yuichi,Koishi, Masayuki,Nakaya, Akinari,Inoue, Shinichiro,Aoki, Isao,Otomo, Akira,Yokoyama, Shiyoshi
-
experimental part
p. 47 - 54
(2011/10/02)
-
- Phenyl and pyridyl LTA4H modulators
-
Leukotriene A4 hydrolase (LTA4H) inhibitors, compositions containing them, and methods of use for the inhibition of LTA4H enzyme activity and the treatment, prevention or inhibition of inflammation and inflammatory conditions.
- -
-
Page/Page column 24
(2010/11/24)
-
- Synthesis and pharmacological evaluation of new cysLT1 receptor antagonists
-
This paper describes the synthesis and pharmacological evaluation of three series of compounds 4a-b, 13a-k and 19, structurally related to the known potent cysLT1 receptor antagonists RG-12553, IC1-204219 and ONO-1078, respectively. The common structural feature of these new series is the presence of a 4-quinolone nucleus acting as a template for substitution of the aromatic nucleus present in the prototype antagonists. We describe the evolution of these series leading to antagonists with potency at nanomolar concentrations in vitro.
- Griera,Armengol,Reyes,Alvarez,Palomer,Cabre,Pascual,Garcia,Mauleon
-
p. 547 - 570
(2007/10/03)
-