Intertwined Lamello-Columnar Coassemblies in Liquid-Crystalline Side-Chain Π-Conjugated Polymers: Toward a New Class of Nanostructured Supramolecular Organic Semiconductors

2014 ◽  
Vol 47 (5) ◽  
pp. 1715-1731 ◽  
Author(s):  
Danli Zeng ◽  
Ibtissam Tahar-Djebbar ◽  
Yiming Xiao ◽  
Farid Kameche ◽  
Navaphun Kayunkid ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Organic Semiconductors ◽  
Liquid Crystalline ◽  
Side Chain ◽  
New Class

A new class of nanostructured supramolecular organic semiconductors based on intertwined multi-lamellar co-assemblies in π-conjugated liquid-crystalline side-chain polymers

2016 ◽  
Vol 49 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Yiming Xiao ◽  
Danli Zeng ◽  
Leszek Mateusz Mazur ◽  
Andrea Castiglione ◽  
Emmanuelle Lacaze ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Liquid Crystalline ◽  
Side Chain ◽  
New Class

Tetra-alkoxy substituted PPV derivatives: a new class of highly soluble liquid crystalline conjugated polymers

2011 ◽  
Vol 2 (6) ◽  
pp. 1279 ◽  
Author(s):  
Joke Vandenbergh ◽  
Ineke Van Severen ◽  
Laurence Lutsen ◽  
Peter Adriaensens ◽  
Henk J. Bolink ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Liquid Crystalline ◽  
New Class ◽  
Soluble Liquid

Side-chain liquid crystalline conjugated polymers, poly (mono-substituted acetylenes)

1994 ◽  
pp. 259-262 ◽  
Author(s):  
K. Akagi ◽  
S.-Y. Oh ◽  
H. Goto ◽  
Y. Kadokura ◽  
H. Shirakawa
Keyword(s):  
Conjugated Polymers ◽  
Liquid Crystalline ◽  
Side Chain ◽  
Substituted Acetylenes

Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

1996 ◽  
Vol 54 ◽  
pp. 160-161
Author(s):  
J. Fink
Keyword(s):  
Electronic Structure ◽  
Conducting Polymers ◽  
Conjugated Polymers ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Light Emitting ◽  
One Dimensional ◽  
New Class ◽  
Electrical Conductivities ◽  
Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

Evidence for Impaired Hepatic Vitamin K1 Metabolism in Patients Treated with N-Methyl-Thiotetrazole Cephalosporins

1984 ◽  
Vol 51 (03) ◽  
pp. 358-361 ◽  
Author(s):  
H Bechtold ◽  
K Andrassy ◽  
E Jähnchen ◽  
J Koderisch ◽  
H Koderisch ◽  
...  
Keyword(s):  
Protein C ◽  
Oral Intake ◽  
Bleeding Complications ◽  
Side Chain ◽  
Acute Administration ◽  
Vitamin K1 ◽  
New Class ◽  
Parenteral Alimentation ◽  
Hepatocellular Regeneration ◽  
Echis Carinatus

SummaryIn 8 patients on no oral intake and with parenteral alimentation, administration of cephalosporins with N-methyl-thiotetrazole side chain (moxalactam, cefamandole), was associated with prolongation of prothrombin time, appearance in the circulation of descarboxy-prothrombin (counter immunoelectrophoresis and echis carinatus assay) and diminution of protein C. Acute administration of 10 mg vitamin Ki was followed by the transient appearance of vitamin K1 2,3-epoxide, indicating an impaired hepatocellular regeneration of vitamin K1 from the epoxide. Impaired hepatic vitamin K1 metabolism, tentatively ascribed to the N-methyl-thiotetrazole group, is one (but possibly not the only) cause of bleeding complications and depression of vitamin K1dependent procoagulants in patients treated with the new class of cephalosporins.

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