Merck Patent Gmbh

Merch Patent Gmbh

Susann Beck

Peer Kirsch

Michael Junge

Ursula Patwal

Andreas Beyer

Mila Fischer

Junyou Pan

Alexander Hahn

Andreas Ruhl

Casper Laurens Van Oosten

Felix Fritz Rudolf Schlosser

Novel dithiopyrrolopyrrole derivatives having dichroic properties which have very high photostability in solution in a liquid-crystalline host are proposed.

Dithioalkylpyrrolopyrroles and the use thereof as dyes

The present application relates to a device for regulating the passage of light which is characterised in that it comprises a layer comprising a liquid-crystalline mixture containing a characteristic structural element.

Device for regulating the passage of light

A liquid-crystalline medium which is suitable for use in a guest-host system. An LC device, preferably a device for the regulation of the passage of energy, containing the liquid-crystalline medium.

Liquid-crystalline medium

A device for regulating the passage of energy from an outside space into an inside space includes a switching layer, where the switching layer comprises one or more compounds of the formula: wherein R, Z, Z, Arand X are defined herein.

Device for regulating the passage of energy

The present application relates to a device for regulating the passage of energy from an outside space into an inside space, where the device comprises a switching layer comprising one or more dichroic dyes of a formula (I) or formula (II).

Device for controlling the passage of energy, containing a dichroic dye compound

The present application relates to a liquid-crystalline material which comprises at least one dye compound and at least one compound of a formula (IA) or (IB). The liquid-crystalline material is suitable for use in optical switching devices, in particular in devices for the homogeneous regulation of the passage of light through an area.

Liquid crystal material

The application relates to a liquid-crystalline medium comprising at least one dichroic dye having a rylene structure which absorbs red light. The application furthermore relates to a device, preferably a device for the regulation of the passage of energy through a light-transmitting area, which contains the liquid-crystalline medium.

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Darmstadt, Germany

Susann Beck