Nematic liquid crystals with charge-transfer acceptors as dopant

Details Nematic liquid crystals with charge-transfer acceptors as dopant Nematic liquid crystals with charge-transfer acceptors as dopant

1973-07-19

1976-01-13

Sebastian, Leland A.

Compositions

Liquid crystal compositions

252408, 350150, 350160LC, G02F 116

Patent

active

039322980

ABSTRACT:
Nematic liquid crystal compositions including a relatively small amount of a charge-transfer acceptor dopant exhibit substantially different voltage-transmission characteristics in dynamic scattering as compared to undoped nematic liquids. Nematic compositions based on azoxy compounds and dopants of the cyano or halo tetra substituted quinone types are preferred.

REFERENCES:
patent: 3773747 (1973-11-01), Steinstrasser
patent: 3806229 (1974-04-01), Schoot et al.
patent: 3814700 (1974-06-01), Aviram et al.
patent: 3815972 (1974-06-01), Hsieh
patent: 3838059 (1974-09-01), Wong
"Effect of Charge-Transfer Acceptors on Dynamic Scattering in a Nematic Liquid Crystal," A. Baise, I. Teucher & M. Labes, Appl. Phys. Lett., Vol. 21, No. 4, pp. 142-143 (Aug. 15, 1972).
"Nematic Liquid Crystal Materials for Displays," Linda Creagh, Proc. of the IEEE., Vol. 61, No. 7 (July 1973) pp. 814-822.
"On the Relation Between Molecular Structure & LC. Behavior," de Jeu, W. & van der Veen, J. Philips Res. Repts. Vol. 27 (2), pp. 172-185 (Apr. 1972).
Foster, R., Organic Charge-Transfer Complexes, Academic Press, New York, pp. 1-93, 252-275 (1969).

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