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Fluorescent liquid crystals

  • US 3,960,753 A
  • Filed: 05/30/1974
  • Issued: 06/01/1976
  • Est. Priority Date: 05/30/1974
  • Status: Expired due to Term
First Claim
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1. A composition which exhibits fluorescent intensity variations at its solid to mesomorphic or mesomorphic to isotropic phase transition comprising a solution of one or a mixture of liquid crystal compounds of the formula ##SPC7##wherein R is Cn H2n+1 -- or Cn H2n+1 CO-- and n is an integer from 1-10 and an amount of 2, 4, 6-trimethylpyridinium tetrakis [1, 1, 1-trifluoro-4-(p-trifluoromethylphenyl)-2, 4-butenedioxo] europium III effective to induce said variations.

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