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Polyisocyanide derivative having controlled helical main chain structure

Foreign code F110003798
File No. E07103WO
Posted date Jul 5, 2011
Country United States of America
Application number 08569606
Gazette No. 20090030227
Gazette No. 7619109
Date of filing Dec 1, 2006
Gazette Date Jan 29, 2009
Gazette Date Nov 17, 2009
International application number JP2006324115
International publication number WO2007063994
Date of international filing Dec 1, 2006
Date of international publication Jun 7, 2007
Priority data
  • P2005-347943 (Dec 1, 2005) JP
  • P2006-238533 (Sep 4, 2006) JP
  • 2006WO-JP324115 (Dec 1, 2006) WO
Title Polyisocyanide derivative having controlled helical main chain structure
Abstract (US7619109)
Disclosed are: a method for production of a polyisocyanide derivative having a stable helical main chain structure with a right-handed or left-handed helix or a mixture thereof from a single type of monomer by polymerizing an aromatic isocyanate having a substituent harboring a structure -CONH in the aromatic ring and a hydrophobic moiety having 6 or more carbon atoms in a polymerization solvent, wherein the direction of the helix depends on the polarity of the polymerization solvent; a poly(aromatic isocyanide) derivative produced by the method; and an aromatic isocyanide which is useful as a monomer for use in the production of the poly(aromatic isocyanide) derivative.
Scope of claims [claim1]
1. A polyaromatic isocyanide derivative having a helical main chain structure represented by the following general formula (1):
wherein, Ar represents a benzene ring of 6 to 30 carbon atoms, R1 represents an aminocarbonyl group of an optically active alanine ester that is esterified with an alkyl group of 6 to 30 carbon atoms, the optically active alanine is any of levorotatory (S) or dextrorotatory (R) chiral body, and x is a positive number indicating the repeat of polyisocyanide group.
[claim2]
2. A polyaromatic isocyanide derivative according to claim 1 wherein the polyaromatic isocyanide derivative is a polyaromatic isocyanide derivative which can form a hydrogen bond between the adjacent amide groups on a side chain.
[claim3]
3. A polyaromatic isocyanide derivative according to claim 1 wherein the polyaromatic isocyanide derivative has a persistence length of 100 nm or more.
[claim4]
4. A liquid crystalline composition comprising a polyaromatic isocyanide derivative of claim 1.
  • Inventor, and Inventor/Applicant
  • OKOSHI KENTO
  • YASHIMA EIJI
  • ONOUCHI HISANARI
  • SAKURAI SHIN-ICHIRO
  • KAJITANI TAKASHI
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) ERATO YASHIMA Super-structured Helix AREA
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