全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

含偶氮苯弯曲液晶的光化学性质研究

, PP. 622-628

Keywords: 材料,弯曲液晶,光照,自发极化

Full-Text   Cite this paper   Add to My Lib

Abstract:

研究了紫外光照和温度对偶氮弯曲液晶极化电流的影响。在365nm紫外光照下,这种偶氮化合物的极化强度随紫外光照时间增加而变化直至为零;当温度从150oC升高到175oC时,弯曲液晶的极化电流随温度线性降低,用Landau-deGennes理论解释了这一现象。其极化情况随紫外光照和温度而变化的实验规律表明在紫外光照下偶氮弯曲液晶发生了光致异构化、光裂解和热裂解作用。

References

[1]  Niori T, Sekine T, Watanabe J W. Distinct ferroelectric smectic liquid crystals consisting of banana shaped achiral molecules[ J ] . J. Mater. Chem., 1996, 6:1231- 1233.
[2]  Huang Y M, Chen L L, Zhou F F , et al . New Trends in Fluid Mechanics Research[ M ].Beijing :Tsinghua University Press & Springer, 2007.61-65 .
[3]  Chen L L, Tang Z K. Electronic Structure and Electron Transition of Banana-Shaped Liquid Crystals[ J ] . Chinese Journal of Liquid Crystals and Displays(液晶与显示), 2009,24(4), 478-481 (in chinese).
[4]  Wang P,Ming H, Liang Z, et al. Photoinduced Birefringence and Optical Storage in Azobenzene Side-chain Polymer Liquid Crystal Film, Chinese Journal of Quantum Electronics(量子电子学报),2002,19(4): 358-362(in chinese).
[5]  Selvanathan S, Peters M V, Schwarz J, et al. Formation and manipulation of discrete supramolecular azobenzene assemblies [ J ] . Appl. Phys. A. 2008,93, 247-252.
[6]  Comstock M J, Levy N, Kirakosian A, et al. Reversible Photomechanical Switching of Individual Engineered Molecules at a Metallic Surface[ J ] . Phys. Rev. Lett. ,2007,99:038301.
[7]  Budyka M F ,Kantor M M .Thermolysis of azobenzene[ J ] .Russian Chemical Bulletin,1993,42 (9):1495-1497.
[8]  Neyts K,Beunis F. Ion Transport and Switching Currents in Smectic Liquid Crystal Devices [ J ] .Ferroelectrics, 2006, 344: 255-266 .

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133