Open AccessGROWING N-SALICYLIDENEANILINE (SA) SINGLE CRYSTAL BY PHYSICAL VAPOUR DEPOSITATION AND ITS POLARIZATION PROPERTY
Author(s) -
Zhao Li-Zhu,
Shen Mengyan,
Teppei Goto
Publication year - 2001
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.50.1540
Subject(s) - photochromism , molecule , polarization (electrochemistry) , single crystal , colored , materials science , crystal (programming language) , ultraviolet , irradiation , optics , molecular physics , physics , optoelectronics , chemistry , nanotechnology , nuclear magnetic resonance , quantum mechanics , computer science , composite material , programming language , nuclear physics
We have grown clean N-salicylideneaniline (SA) single crystals large enough in size by physical vapour depositaion. The photochromism of the SA single is studied by probe light at different optical polarizations At different temperatures and different polarizations,we measured the time dependence of the change of optical density in the colored crystal in the forward and backward reactions.The activation energies of the single crystal are obtained in different optical polarizations.Based on theoretical calculations,the structure configurations of the SA molecules in the colored keto form are analyzed.When an ultraviolet (UV) light is irradiated on the sample at 200 K,about 60% of the ketone form molecules are found to be in the trans-configuration and about 40% of them in the cis-configuration.