Magnetic-field-induced Freedericksz transition of a planar aligned liquid crystal doped with porphyrinatozinc(II): influence of the substituent of the porphyrin ring

Authors
Li, T Ying, X Shi, LP Huang, JW Lin, ZY Shi, J Ji, LN
Citation
T. Li et al., Magnetic-field-induced Freedericksz transition of a planar aligned liquid crystal doped with porphyrinatozinc(II): influence of the substituent of the porphyrin ring, LIQ CRYST, 27(4), 2000, pp. 551-553
Citations number
7
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LIQUID CRYSTALS
ISSN journal
02678292 → ACNP
Volume
27
Issue
4
Year of publication
2000
Pages
551 - 553
Database
ISI
SICI code
0267-8292(200004)27:4<551:MFTOAP>2.0.ZU;2-5
Abstract
The magnetic-field-induced Freedericksz transition of a planar aligned nema tic liquid crystal doped with 1.0 wt % of a diamagnetic porphyrinatozinc(II ) has been studied. It was observed that 5CB doped with 1.0 wt % of derivat ives of Zn(II)TPP-5,10,15,20-tetraphenyl-porphyrinatozinc(II)-which have di fferent substituents in one phenyl ring display sharp Freedericksz transiti on curves and dramatically decrease the critical magnetic field compared wi th pure 5CB.