Metal-containing side chain liquid crystal polymers
AssigneeThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
InventorsPeter Styring, Isabel M. Saez, Neil Gough, Ekkehard Sinn, John W Goodby
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Abstract
A group fo liquid crystalline compounds defined by formulas (1) and (2) including polymers, monomers, oligomers and intermediates for their preparation. Also included are symmetric and non-symmetric poly(dimethylsiloxy) compounds having end groups derived from Formulas (1) and (2).
Claims14
A set of compounds defined by formulas 1 and 2:
- where:
- X=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Y=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Z=alkyl spacer;
- R1=H or alkyl,
- R2=H, F, CH3;
- R3=alkyl, alkenyl, alkynyl, HOH,
- CH2═CH—COO (acrylate), CH2═CH(CH3)CHOO (methacrylate);
- and
- m=0, 1;
- n=0, 1, 2;
- M is a transition metal;
- wherein alkyl, alkenyl, and alkynyl have up to 11 carbon atoms.
The compound of claim having a formula:
- where M=Ni or Cu.
A compound having a formula:
- where M=Ni, Cu or VO.
A compound having a formula:
- where M=Ni or Cu.
A compound having a formula:
- where M=Ni or Cu.
A method of synthesizing oligomeric and polymeric liquid crystalline materials containing a coordinated transitional metal center in the mesogenic side chain, the method comprising the steps of:
- (i) activating a non-symmetrical monomer towards polymerization;
- and
- (ii) polymerizing the monomer;
- wherein only one moiety is activated towards polymerization and wherein the monomer has the formula:
- or the formula:
- wherein
- X and Y are independently selected from —OCO—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Z=alkyl spacer;
- R1=H or alkyl,
- R2=H, F, CH3;
- m=0, 1;
- n=0, 1, 2;
- M is a transition metal and the aromatic rings defined by m and n may possess fluoro substituents or may be replaced by heterocyclic or by saturated alicyclic rings;
- and
- wherein alkyl has up to 11 carbon atoms.
A method of synthesizing oligomeric and polymeric liquid crystalline materials containing a co-ordinated transitional metal center in the mesogenic side chain, the method comprising the following steps:
- (i) activating a non-symmetrical monomer towards polymerization;
- and
- (ii) polymerizing the monomer;
- wherein only one moiety is activated towards polymerization and wherein the monomer has the general formula:
An oligomeric or polymeric liquid crystalline material, containing a coordinated transition metal center in the mesogenic side chain, having a repeat unit represented by formula 10 or 11:
- where
- X=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Y=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Z=alkyl spacer;
- R1=H or alkyl,
- R2=H, F, CH3;
- m=0, 1;
- n=0, 1, 2;
- wherein alkyl has up to 11 carbon atoms;
- M is a transition metal;
- P represents the degree of polymerization and
- A is an oligomeric or polymeric modifier:
- or ([SiO3/2][SiR24O]b)a wherein
- a=integer from 4 to 18;
- b=integer from 0 to 10 and
- j=degree of polyemerization;
- and
- R4=an alkyl group.
A liquid crystalline material having a formula 12
The liquid crystalline material having a formula 13
A dimethylsiloxy liquid crystalline material of Formula 14
- wherein x is an integer greater than, or equal to, 0 and T is a group having a formula 15 or 16 below
- where:
- X=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Y=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Z=alkyl spacer;
- R1=H or alkyl(CkH2k+1);
- R2=H, F, CH3;
- m=0, 1;
- n=0, 1, 2;
- wherein alkyl has up to 11 carbon atoms;
- and M is a transition metal.
A trimethylsiloxy-poly(dimethylsiloxy) liquid crystalline material having a formula 17
- wherein x is an integer greater than, or equal to, 1 and T is a group having a formula:
- where
- X=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Y=—OOC—, —COO—, —CO—, —O—, —S—, alkyne, σ-bond;
- Z=alkyl spacer;
- R1=H or alkyl,
- R2=H, F, CH3;
- m=0, 1;
- n=0, 1, 2;
- wherein alkyl has up to 11 carbon atoms;
- and M is a transition metal.
Dependencies are inferred from the claim text.