Merck Patent Gmbh

Merck Patent Gesellschaft MIT Beschrankter Haftung

Andreas Ruhl

Peer Kirsch

Joachim Krause

Michael Heckmeier

Michael Junge

Ursula Patwal

Alexander Hahn

Marc Tornow

Achyut Bora

Kazuaki Tarumi

Mila Fischer

Susann Gunst

Detlef Pauluth

Herbert Plach

Ekkehard Bartmann

Junyou Pan

Andreas Beyer

Qiong Tong

John Patrick

Klaus-Dieter Franz

Gerd-Volker Röschenthaler

Peter Best

Susann Beck

Gerald Unger

Christoph Wetzel

Rene Lutz

Andrea Ritter

Dmitrii Sevenard

René Lutz

Rolf Sander

The present invention relates to a liquid crystalline medium comprising dichroitic dyes made of benzothiadiazoles and related extended heterocyclic derivatives, the use of said medium for optical, electro-optical and electronic purposes, in particular in devices for regulating the passage of radiation energy from an outside space into an inside space, for example in windows. The invention further relates to devices containing the liquid crystalline medium according to the invention. Some new dichroitic dyes are disclosed.

Liquid crystalline medium

An electronic switching element is described having, in sequence, a first electrode, a molecular layer bonded to a substrate, and a second electrode. The molecular layer contains compounds of formula I, R-(A-Z)&#x2014;B&#x2014;(Z-A)-Sp-G, wherein A, A, B, Z, Z, Sp, G, r, and s are as defined herein, in which a mesogenic radical is bonded to the substrate via a spacer group, Sp, by means of an anchor group, G. The switching element is suitable for production of components that can operate as a memristive device for digital information storage.

Electronic switching element

The present invention relates to liquid crystalline media comprising one or more benzothiadiazol derivatives of formula I, in which R, R, A, A, A, A, Z, Z, Z, Z, W, X, X, r and s have the meanings indicated in claim, to the use of such liquid crystal media for optical, electro-optical and electronic purposes, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in windows.

An electronic component () comprising a plurality of switching elements () which comprise, in this sequence,

Electronic component including molecular layer

The present invention relates to thiadiazoloquinoxaline derivatives of the formula I, in which R, R, A, A, A, A, Z, Z, Z, Z, W, X, X, r and s have the meanings indicated in Claim to processes and intermediates for the preparation thereof, to the use of the compounds of the formula I for optical, electro-optical and electronic purposes, in particular in liquid-crystal media and in devices for regulating the passage of energy from an outside space into an inside space, and to these LC media and the devices comprising these media.

Thiadiazoloquinoxaline derivatives

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 invention relates to the use of end groups Y, where Y stands for CFO&#x2014; or FS&#x2014;, as hydrophobic end group in surface-active compounds, corresponding novel compounds, and processes for the preparation of these compounds.

Fluorosurfactants

The instant invention relates to mesogenic media comprising one or more compounds which comprise two or more mesogenic groups two of which are linked to the ortho-positions of an aromatic ring, preferably of formula (I) wherein the parameters are as specified in the text, preferably the instant invention relates to mesogenic media showing a blue phase and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices. The instant invention further relates to compounds of formula (I). 

Mesogenic compounds, liquid crystal medium and liquid crystal display

Liquid-crystalline compounds of the formula I in whichR, A, A, Z, Z, X, a, b, L, Land Lare as defined herein, and to liquid-crystalline media comprising at least one compound of the formula I and to electro-optical displays containing a liquid-crystalline medium of this type.

Liquid-crystalline compounds

Liquid-crystalline compounds of the formula I in which

The invention relates to liquid crystal compounds of formula (I), where X, X, X, Z, Z, L, L, L, L, L, L, L, L, L, L, Land a have the meanings given in claim, and liquid crystal media containing at least one compound of formula (I) and electro-optical displays comprising such a liquid crystal medium 

Liquid crystal compounds

The invention relates to bis(alkylthio)carbenium salts of the formula Iwith the stated definitions for R, R, Rand Y,and to a process for the preparation thereof. The compounds according to the invention are advantageously suitable as electrophilic reagents for the transfer of fluorinated alkyl and acyl radicals onto nucleophilic compounds.

Bis(alkylthio)carbenium salts

The invention relates to fluorocyclohexane derivatives of the formula I ##STR1## in which n, m, R.sup.1, X.sup.1, X.sup.2, Z.sup.1, Z.sup.2, A.sup.1 and Y are as defined above.

Fluorocyclohexane derivatives, and liquid-crystalline medium

A liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, comprising one or more compounds of the formula I ##STR1## in which R, A.sup.1,. A.sup.2, Z.sup.1, Z.sup.2, m, n, L.sup.1, L 2 and L.sup.3 are as defined in claim 1.

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Rossdorf, Germany

Andreas Ruhl