Back to results
US 9,029,537 B2Granted
Electroluminescent materials
AssigneeLomox Limited
InventorGene Carl Koch
Life of this patent
Estimating the term…
Abstract
Compounds of the general structure: Z-A-(S-B)n where A represents a linear aromatic molecular core, S represents a flexible spacer unit, B represents a crosslinking group such as a methacrylate group, n equals 1 to 3, and Z represents any entity compatible with the B groups, and in which A is a substantially aromatic nucleus containing fluorene ring structures substituted at the 9-position and in which the 9-positions of the fluorenes are not susceptible to oxidation.
Claims18
A compound of the general structure:
- B-S-A-S-B
- wherein A represents a linear, covalently bonded chain of the general formula:
- in which at least one Fl is a fluorene-2,7-diyldiradical of the structure:
- wherein X1, X2, X5, and X6 are fluorines, and X3 and X4 are n-alkyl groups having the formula CmH2m+1 wherein m is from 1 to 12,
- * indicates the point of attachment of Fl to the neighbouring groups, and wherein Ar in each occurrence is an aromatic diradical, a heteroaromatic diradical or a single bond, and
- wherein
- S represents a flexible spacer unit that is an alkyl group, optionally containing one or more heteroatoms,
- B represents a crosslinking group selected from the group consisting of a methacrylate, a 1,4-pentadien-3-yl, a maleimide, a maleate, a fumarate, and an alkenyl ether, and
- n is from 1 to 6.
6 more elements
Dependencies are inferred from the claim text.