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1

Mesophase characterization of some long chain vicinal multihydroxy amphiphiles [1,2]

Praefcke, Klaus, Kohne, Bernd, Diele, Siegmar, Pelzl, Gerhard, Kjær, Anders

Journal:

Liquid Crystals

Year:

1992

Language:

english

File:

PDF, 510 KB

english, 1992

2

Hexa-O-alkanoyl-scyllo-inositols, the First Alicyclic, Saturated, Discotic Liquid Crystals

Dr. Bernd Kohne, Prof. Dr.-Ing. Klaus Praefcke

Journal:

Angewandte Chemie International Edition

Year:

1984

Language:

english

File:

PDF, 261 KB

english, 1984

3

Design and Constitutional Features of Mesophase-Forming Uni- or Supramolecular Discotic Materials [1,2]

Praefcke, Klaus, Eckert, Andreas

Journal:

Molecular Crystals and Liquid Crystals

Year:

2003

Language:

english

File:

PDF, 372 KB

english, 2003

4

Synthese S-substituierter Benzile und einiger gehinderter Biphenyle [1] / Synthesis of S-Substituted Benzils and Some Hindered Biphenyls [1]

Lüdersdorf, Reinhard, Mai, Jürgen, Praefcke, Klaus

Journal:

Zeitschrift für Naturforschung B

Year:

1980

Language:

german

File:

PDF, 6.44 MB

german, 1980

5

SPIE Proceedings [SPIE Liquid Crystals - Zakopane, Poland (Monday 3 March 1997)] Liquid Crystals: Chemistry and Structure - Helical-chiral triphenylene liquid crystals

Praefcke, Klaus, Blunk, D., Eckert, A., Tykarska, Marzena, Dabrowski, Roman S., Zielinski, Jerzy

Year:

1998

Language:

english

File:

PDF, 1.40 MB

english, 1998

6

Discotische Flüssigkristalle: Beziehung zwischen Molekülstruktur und discogenen Eigenschaften scheibenförmiger Verbindungen, nicht-flüssigkristalline Ester des myo-Inosits und des Mytilits [1,2]

Kohne, Bernd, Praefcke, Klaus, Stephan, Werner, Nürnberg, Peter

Journal:

Zeitschrift für Naturforschung B

Year:

1985

Language:

german

File:

PDF, 6.27 MB

german, 1985

7

Inosose-Flüssigkristalle / Inosose Liquid Crystals

Praefcke, Klaus, Kohne, Bernd, Eckert, Andreas, Hempel, Joachim

Journal:

Zeitschrift für Naturforschung B

Year:

1990

File:

PDF, 6.87 MB

1990

8

Synthesen und ungewöhnliche Mesophasensequenzen von Kohlenwasserstoffen eines neuartigen Typs nicht-calamitischer Flüssigkristalle

Praefcke, Von Klaus, Kohne, Bernd, Gutbier, Karin, Johnen, Norbert, Singer, Dirk

Journal:

Liquid Crystals

Year:

1989

Language:

english

File:

PDF, 1.20 MB

english, 1989

9

First carbohydrate liquid crystals of columnar structure

Praefcke, Klaus, Levelut, Anne-Marie, Kohne, Bernd, Eckert, Andreas

Journal:

Liquid Crystals

Year:

1989

Language:

english

File:

PDF, 517 KB

english, 1989

10

Di-( trans -4-Alkylcyclohexyl)-α-Diketones A New Class of Liquid Crystal Compounds

Praefcke, Klaus, Schmidt, Dietmar, Heppke, Gerd

Journal:

Israel Journal of Chemistry

Year:

1979

Language:

english

File:

PDF, 151 KB

english, 1979

11

4(4-Alkyloxybenzoyloxy)-4' -cyanoazobenzole: Eine homologe Reihe flüssigkristalliner Verbindungen mit der ungewöhnlichen Phasenfolge smektisch A-nematisch-smektisch A / 4(4-Alkyloxybenzoyloxy)-4'-cyanoazobenzenes: A Homologous Series of Liquid Crystals Exhibiting the Unusual Phase Sequence Smectic A -Nematic -Smectic A

Heppke, Gerd, Hopf, Reinhard, Kohne, Bernd, Praefcke, Klaus

Journal:

Zeitschrift für Naturforschung B

Year:

1980

Language:

german

File:

PDF, 4.94 MB

german, 1980

12

Synthese von cis-und trans-4-Cyanocyclohexanol / Synthesis of cis-and trans-4-Cyanocyclohexanol

Praefcke, Klaus, Schmidt, Dietmar

Journal:

Zeitschrift für Naturforschung B

Year:

1980

Language:

german

File:

PDF, 3.85 MB

german, 1980

13

Erste flüssigkristalline Azulen-Derivate [1] / First Liquid Crystal Azulene Derivatives [1]

Praefcke, Klaus, Schmidt, Dietmar

Journal:

Zeitschrift für Naturforschung B

Year:

1981

Language:

german

File:

PDF, 3.86 MB

german, 1981

14

Spectroscopic properties of nematic discotic phenylethynylbenzene derivatives: Symmetry effects

Marguet, Sylvie, Markovitsi, Dimitra, Goldmann, Daniela, Janietz, Dietmar, Praefcke, Klaus, Singer, Dirk

Journal:

Journal of the Chemical Society Faraday Transactions

Year:

1997

Language:

english

File:

PDF, 651 KB

english, 1997

15

Thermotropic biaxial nematic phases with negative optical character [1]

Praefcke, Klaus, Kohne, Bernd, Singer, Dirk, Demus, Dietrich, Pelzl, Gerhard, Diele, Siegmar

Journal:

Liquid Crystals

Year:

1990

Language:

english

File:

PDF, 418 KB

english, 1990

16

News on Inositol Liquid Crystals 1

Praefcke, Klaus, Blunk, Dirk, Hempel, Joachim

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Year:

1994

Language:

english

File:

PDF, 1.82 MB

english, 1994

17

Benzotri(imidazole)—a New Ring System Derived from Benzenehexamine

Dr. Bernd Kohne, Prof. Dr. Klaus Praefcke, Thomas Derz, Thomas Gondro, Dr. Felix Frolow

Journal:

Angewandte Chemie International Edition

Year:

1986

Language:

english

File:

PDF, 245 KB

english, 1986

18

Preliminary Communications First liquid crystalline derivatives of umbelliferyl β-D-glucoside [1]

Blunk, Dirk, Praefcke, Klaus, Legler, Günter

Journal:

Liquid Crystals

Year:

1995

Language:

english

File:

PDF, 189 KB

english, 1995

19

Liquid-crystalline Compounds, 86. The First Disc-Shaped Dinuclear Platinum Mesogen

Klaus Praefcke, Belkiz Bilgin, Joachim Pickardt, Marina Borowski

Journal:

European Journal of Inorganic Chemistry

Year:

1994

Language:

english

File:

PDF, 286 KB

english, 1994

20

Uber die drei discotischen Mesophasen der scyllo-Inosithexaester / On the Three Discotic Mesophases of scyllo-Inositol Hexaesters

Kohne, Bernd, Praefcke, Klaus, Billard, Jan

Journal:

Zeitschrift für Naturforschung B

Year:

1986

File:

PDF, 7.96 MB

1986

21

Benzotris[1,2,5]thiadiazol in einer Eintopfreaktion aus Benzolhexamin

Klaus Praefcke, Bernd Kohne, Frank Korinth

Journal:

European Journal of Organic Chemistry

Year:

1990

Language:

german

File:

PDF, 164 KB

german, 1990

22

The photochemistry of sulphoxides. A CIDNP study of carbon?sulphur bond cleavage paths

Khait, Igor, L�dersdorf, Reinhard, Muszkat, Karol A., Praefcke, Klaus

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1981

Language:

english

File:

PDF, 1.41 MB

english, 1981

23

CIDNP study of photodealkylation in ortho-substituted aryl methyl sulphoxides

Muszkat, Karol A., Praefcke, Klaus, Khait, Igor, L�dersdorf, Reinhard

Journal:

Journal of the Chemical Society Chemical Communications

Year:

1979

Language:

english

File:

PDF, 190 KB

english, 1979

24

Novel family of liquid crystals based on a known biheterocyclic pigment material: mesomorphic derivatives of 2,5-dihydropyrrolo [3,4-c]pyrrole-1,4-dione

PRAEFCKE, KLAUS, JACHMANN, MARKUS, BLUNK, DIRK, HORN, MATTHIAS

Journal:

Liquid Crystals

Year:

1998

Language:

english

File:

PDF, 245 KB

english, 1998

25

New disc-shaped mesogens based on pentakis(phenylethynyl)benzene derivatives

Janietz, Dietmar, Praefcke, Klaus, Singer, Dirk

Journal:

Liquid Crystals

Year:

1993

Language:

english

File:

PDF, 472 KB

english, 1993

26

SPIE Proceedings [SPIE Liquid Crystals - Zakopane, Poland (Monday 3 March 1997)] Liquid Crystals: Chemistry and Structure - 1,4-diketo-pyrrolo[3,4-c]pyrrole: a novel core system for liquid crystals

Blunk, D., Praefcke, Klaus, Jachmann, M., Horn, M., Tykarska, Marzena, Dabrowski, Roman S., Zielinski, Jerzy

Year:

1998

Language:

english

File:

PDF, 616 KB

english, 1998

27

Structural study of columnar liquid-crystalline phases in homologousseries of tetrapalladium organyls

Heinrich, Benoît, Praefcke, Klaus, Guillon, Daniel

Journal:

Journal of Materials Chemistry

Year:

1997

Language:

english

File:

PDF, 711 KB

english, 1997

28

Substitution pattern and stereochemistry versus liquid crystalline behaviour [1]

Praefcke, Klaus, Blunk, Dirk

Journal:

Liquid Crystals

Year:

1993

Language:

english

File:

PDF, 1.40 MB

english, 1993

29

Calamitische Flüssigkristalle: Beziehung zwischen Molekülstruktur und Mesogenität, trans-und cis-1,3,5,7-Tetraoxadecalin-Derivate [1,2] / Calamitic Liquid Crystals: Relationship Between Molecular Structure and Mesogenity, trans- and cis-1,3,5,7 -Tetraoxadecalin Derivatives [1, 2]

Kohne, Bernd, Praefcke, Klaus, Omar, Rashad Shabana, Frolow, Felix

Journal:

Zeitschrift für Naturforschung B

Year:

1986

File:

PDF, 12.73 MB

1986

30

Selenolester – eine neue Klasse flüssigkristalliner Verbindungen

Priv.-Doz. Dr. Gerd Heppke, Dr. Jürgen Martens, Prof. Dr. Klaus Praefcke, Dr. Helmut Simon

Journal:

Angewandte Chemie

Year:

1977

File:

PDF, 244 KB

1977

31

Core-halogenated, helical-chiral triphenylene-based columnar liquid crystals

PRAEFCKE, KLAUS, ECKERT, ANDREAS, BLUNK, DIRK

Journal:

Liquid Crystals

Year:

1997

Language:

english

File:

PDF, 437 KB

english, 1997

32

A new family of carbohydrate liquid crystals. N -Alkylated 1-deoxynojirimycin derivatives [1]

Blunk, Dirk, Praefcke, Klaus, Legler, Günter

Journal:

Liquid Crystals

Year:

1994

Language:

english

File:

PDF, 414 KB

english, 1994

33

Photochemische Thiaxanthon-Synthese aus 2-Halogen-thiobenzoesäure- S -arylestern 1

BUCHHOLZ, Gerd, MARTENS, Jürgen, PRAEFCKE, Klaus

Journal:

Year:

1974

File:

PDF, 68 KB

1974

34

Induction and variation of discotic columnar phases through doping with electron acceptors

Prof. Helmut Ringsdorf, Holger Bengs, Olaf Karthaus, Renate Wüstefeld, Martina Ebert, Prof. Joachim H. Wendorff, Dr. Bernd Kohne, Prof. Klaus Praefcke

Journal:

Advanced Materials

Year:

1990

Language:

english

File:

PDF, 486 KB

english, 1990

35

Ein dreifach anelliertes Benzotripyrazin Notiz zu einem neuen Ringsystem

Klaus Praefcke, Bernd Kohne, Thomas Kohlschreiber, Frank Korinth

Journal:

European Journal of Organic Chemistry

Year:

1988

File:

PDF, 186 KB

1988

36

New inductions of columnar mesophases in nematic discotic multiyne mesogens [1]

Praefcke, Klaus, Singer, Dirk, Kohne, Bernd

Journal:

Liquid Crystals

Year:

1993

Language:

english

File:

PDF, 825 KB

english, 1993

37

Amphotropic Properties of Cyclic Scyllitol Hexaesters [1]

Tseva, Nadejda Usol, Praefcke, Klaus, Smirnova, Antonina, Kohne, Bernd

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Year:

2001

Language:

english

File:

PDF, 515 KB

english, 2001

38

Can Thermotropic Biaxial Nematics Be Made Real? [1]

Praefcke, Klaus

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Year:

2001

Language:

english

File:

PDF, 520 KB

english, 2001

39

Bis-1,3-diol type liquid crystals from pentaerythritol [1]

Praefcke, Klaus, Psaras, Panicos, Eckert, Andreas

Journal:

Liquid Crystals

Year:

1993

Language:

english

File:

PDF, 610 KB

english, 1993

40

Spektroskopische Untersuchungen : XVIII. Vergleichende 1H−und 13C-NMR-Studie isoelektronischer O-, S-, Se- und Te-arylester aromatischer Carbonsäuren

Bernd Kohne, Klaus Praefcke, Reinhard Zeisberg

Journal:

Journal of Organometallic Chemistry

Year:

1979

File:

PDF, 800 KB

1979

41

Selenol Esters—A Novel Class of Liquid-Crystal Compounds

Priv.-Doz. Dr. Gerd Heppke, Dr. Jürgen Martens, Prof. Dr. Klaus Praefcke, Dr. Helmut Simon

Journal:

Angewandte Chemie International Edition

Year:

1977

Language:

english

File:

PDF, 238 KB

english, 1977

42

Hexaalkynyltriphenylene: A New Type of Nematic-Discotic Hydrocarbon

Prof. Dr.-Ing. Klaus Praefcke, Dr. Bernd Kohne, Dipl.-Chem. Dirk Singer

Journal:

Angewandte Chemie International Edition

Year:

1990

Language:

english

File:

PDF, 530 KB

english, 1990

43

Neuartige discotisch-flüssigkristalline, polare Monothioscyllitol-Derivate [1,2] / Novel Discotic Liquid Crystalline, Polar Monothioscyllitol Derivatives [1,2]

Kohne, Bernd, Marquardt, Peer, Praefcke, Klaus, Psaras, Panicos, Stephan, Werner

Journal:

Zeitschrift für Naturforschung B

Year:

1987

File:

PDF, 13.42 MB

1987

44

5H-[1]Benzoselenino[2,3-b]pyridine—A Novel Heterocyclic Ring System

Dipl.-Chem. Behrouze Pakzad, Prof. Dr. Klaus Praefcke, Dr. Helmut Simon

Journal:

Angewandte Chemie International Edition

Year:

1977

Language:

english

File:

PDF, 211 KB

english, 1977

45

Benzenepentamine – Its Easy Accessibility and Use in Syntheses of Pyrazinoquinoxalines

Klaus Praefcke, Bernd Kohne, Frank Korinth, Panicos Psaras, Jaques Nasielski, Caroline Verhoeven, Raymonde Nasielski-Hinkens

Journal:

European Journal of Organic Chemistry

Year:

1989

Language:

english

File:

PDF, 586 KB

english, 1989

46

Organische Schwefelverbindungen, X / Organosulfur Compounds, X

Höhne, Gerhard, Marschner, Freimut, Praefcke, Klaus

Journal:

Zeitschrift für Naturforschung B

Year:

1974

Language:

german

File:

PDF, 2.94 MB

german, 1974

47

Notizen: Photochemistry of Selenol Esters

Martens, Jürgen, Praefcke, Klaus, Simon, Helmut

Journal:

Zeitschrift für Naturforschung B

Year:

1976

Language:

english

File:

PDF, 1.89 MB

english, 1976

48

Flüssigkristalline Kohlenhydratdithioacetale / Liquid Crystalline Carbohydrate Dithioacetals

Eckert, Andreas, Kohne, Bernd, Praefcke, Klaus

Journal:

Zeitschrift für Naturforschung B

Year:

1988

File:

PDF, 10.37 MB

1988

49

Eine neue und einfache Synthese des Dipyrazino[2,3-f:2′,3′-h]-chinoxalin-Ringsystems

Bernd Kohne, Klaus Praefcke

Journal:

European Journal of Organic Chemistry

Year:

1985

Language:

german

File:

PDF, 439 KB

german, 1985

50

Preliminary communication First observation of an optically controlled electro-optic effect in nematic-discotic liquid crystals

SIKHARULIDZE, DAVID, CHILAYA, GOURAM, PRAEFCKE, KLAUS, BLUNK, DIRK

Journal:

Liquid Crystals

Year:

1997

Language:

english

File:

PDF, 433 KB

english, 1997

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