The microcrystals of molecules with large dipole moment in a non-centrosymmetric crystal structure should possess a huge dipole moment. Therefore, such polar microcrystals dispersed in nonpolar liquid may easily respond to a weak electric field and orient to it. On the basis of this idea, dimethylaminostilbazolium tosylate (DAST) microcrystals dispersed in decahydronaphthalene have been prepared, for which a rather large dipole moment and non-centrosymmetric crystal structures was confirmed. Absorption change of DAST microcrystals was observed even under a extremely weak DC electric field of 100 V·cm-1 and the magnitude of absorption change rate at absorption maximum varied almost linearly up to 300 V·cm-1. This phenomenon may be applied to display devices.
|Journal||Japanese Journal of Applied Physics, Part 2: Letters|
|Issue number||6 A/B|
|Publication status||Published - 1999 Jun 15|
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)