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 |
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| 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. |
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| IPC(International Patent Classification) | |
| Reference ( R and D project ) | ERATO YASHIMA Super-structured Helix AREA |
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Contact Information for " Polyisocyanide derivative having controlled helical main chain structure "
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