Conjugated polymers having spiro centers and their use as electroluminescence materials
AssigneeHoechst Aktiengesellschaft
InventorsWilli Kreuder, Donald Lupo, Josef Salbeck, Hermann Schenk, Thomas Stehlin
Life of this patent
Estimating the term…
Abstract
Conjugated polymers comprising recurring units of the formula (I), ##STR1## A, B, C, D are identical or different and are each from one to fifteen identical or different arylene and/or heteroarylene and/or vinylene groups which, like the spirobifluorene skeleton itself, may be unsubstituted or substituted; S are identical or different substituents; m, n are 0 or 1. The polymers of the invention having the formula (I) are suitable as electroluminescence materials and have, in particular, a high color purity of the emission.
Claims8
A conjugated polymer comprising 2 to 1000 recurring units of the formula (I), ##STR12## where the symbols and indices have the following meanings:
- A, B, C, D are identical or different and are each from one to fifteen identical or different arylene and/or heteroarylene and/or vinylene groups which, like the spirobifluorene skeleton itself, may be unsubstituted or substituted;
- S are identical or different and are each H or a substituent;
- m, n are 0 or 1.
Dependencies are inferred from the claim text.