Hoechst Aktiengesellschaft

Imm, Institut Fur Mikrotechnik Gmbh

Max-plank-society

Klaus Mullen

Ullrich Scherf

Josef Salbeck

Thomas Stehlin

Hermann Schenk

Roland Stern

Donald Lupo

Wolfgang Ehrfeld

Herbert Oskar Moser

Christoph Bubeck

Hans-Dieter Bauer

Pavel Belik

Andrew C Grimsdale

Josemon Jacob

Andreas Gugel

Martin Kreyenschmidt

Joachim Huber

Novel pentaphenylenes having the following general formula are described; These polymers generally exhibit blue electroluminescence and are useful in electronic devices. A novel diketone compound having a low LUMO level of the following general structure is also described; 

Light-emitting polymers and electronic devices using such polymers

Use of polymers containing isolated chromophores as electroluminescence

Thermally stable fullerene derivatives and process for producing the same

Poly(4,5,9,10-tetrahydropyrene-2,7-diyl) derivatives of the formula (I) ##STR1## where the symbols R.sup.1 to R.sup.4 have the following meanings: R.sup.1, R.sup.2, R.sup.3, R.sup.4 are identically or variously H, a straight-chain or branched alkyl chain containing 1 to 22 carbon atoms, it being possible for one or more nonadjacent CH.sub.2 groups also to be replaced by --O--, --COO--, --OOC-- and/or phenylene, aryl or aryloxy groups, it being possible for the aromatic to be substituted by C.sub.1 -C.sub.22 -alkyl, C.sub.1 -C.sub.22 -alkoxy, Br, Cl, F, CN, and/or NO.sub.2, Br, Cl, F, CN, NO.sub.2, or carboalkoxy containing 2 to 23 carbon atoms; n is 10 to 150, are suitable as electroluminescence materials.

Poly(4,5,9,10-tetrahydropyrene-2,7-diyl) derivatives and their use as

Conjugated polymers containing ansa substructures and their use as electroluminescence materials. Conjugated polymers containing ansa substructures, which contain aromatic groups and in which adjacent aromatic groups are connected to one another in such a way that one ring atom of one aromatic group is directly linked to one ring atom of the other aromatic group and any further linkages of these two aromatic groups are possible only via a bridge containing at least one tetravalent carbon atom and/or heteroatom. The polymers of the invention having ansa substructures are outstandingly suitable as electroluminescence materials, since they have a very high color purity.

Conjugated polymers containing ANSA substructures and their use as

The present invention relates to polymers with an extended system of conjugated double bonds constructed as homo and/or heterocyclic rings which are interlinked in pairs so that one ring is joined to the neighboring one at two adjacent atoms in the ring, in which one of these connections is made by a chemical bond to a ring atom of the neighboring ring and the other via a carbon, nitrogen, oxygen or sulphur atom to an atom of the neighboring ring adjacent said ring atom, their production and use in electrical, electronic and opto-electronic components.

Ladder polymers containing conjugated double bonds

A method to produce nonlinear optical microcomponents is described which makes it possible to employ material combinations not yet used to date. By means of X-ray depth lithography not only waveguide structures, but also microcell structures are produced, into which subsequently material of nonlinear optical properties is placed. By means of X-ray depth lithography and micromolding techniques a mold insert with a waveguide structure is produced as a positive mold, and the waveguide structure is impressed into a polymer base material by means of the mold insert. Then the impressed waveguide structure is filled with optically linear material, and after the filling operation at least one microcell structure is produced, at least in the areas of the optically linear material, into which microcell structure optically nonlinear material is placed. The microcell structure may also be impressed by means of another mold insert.

Method to produce nonlinear optical microcomponents

A method to produce nonlinear optical microcomponents is described which employs hitherto not yet used material combinations. Not only waveguide structures are produced by means of X-ray depth lithography, but also microcell structures, into which materials having nonlinear optical properties are introduced. The microstructure is produced as a positive mold part, from which there is subsequently generated, by means of electroforming, a mold insert, a negative of which is made using a polymer material. After the molding operation the microstructure is applied to a substrate, and nonlinear optical material, covered by a cover plate if needed or desired, is introduced into the microcell structure.

Growing community of inventors

Mainz, Germany

Klaus Mullen