Method and materials for thermostable and lightfast dichroic light polarizers

A dyestuff having the formula:

• ##STR15## wherein:
• R.sup.1 .dbd.H and R.dbd.Alk, ArNH, or ArCONH;
• or
• R.sup.1 .dbd.Cl and R.dbd.H, Alk, ArNH, or ArCONH;
• Alk is an alkyl group with 1 to 4 carbon atoms;
• Ar is a substituted or unsubstituted aryl radical;
• and
• M is a cation.

A dyestuff having the formula:

• ##STR16## wherein R is H, an alkyl group, a halogen, or an alkoxy group;
• Ar is a substituted or unsubstituted aryl radical;
• n=2 or 3;
• and
• M is a cation.

A dyestuff having the formula:

• ##STR17## wherein:
• R is H, an alkyl group, a halogen, or an alkoxy group;
• Ar is a substituted or unsubstituted aryl radical;
• n=2 or 3;
• and
• M is a cation.

A liquid crystalline cell comprising:

• a liquid crystal material;
• and
• a dichroic light-polarizing element, the dichroic light polarizing element further comprising a support surface wherein a plurality of supra-molecular complexes formed from one or more organic dyestuffs of the formula:
• (SO.sub.3 M).sub.n
• wherein M is a cation,
• are oriented in a direction on the support surface so as to polarize light transmitted through the plurality of supra-molecular complexes, and wherein the dichroic light-polarizing element has an orienting influence on the liquid crystal material.