| 摘要 |
A composition comprises a salt of a polymer having quaternary nitrogen groups and of 7,7,8,8 - tetracyano - quinodimethan (TCNQ), said salt containing a sufficient quantity of additional TCNQ to give the composition, when in the form of a solid, a conductivity greater than 10-10 mho per centimetre. The salts may be obtained by (1) polymerizing a monvinyl monomer containing a tertiary nitrogen atom, or (2) polymerizing a monomer having a primary or secondary amine group, e.g. ethylene imine, and subsequently alkylating, or (3) reaction of a tertiary amine with a polymer containing halomethyl groups, e.g. halomethylated polystyrene and polyphenylene ethers, followed by quaternization and reaction with a simple TCNQ salt. The compositions may also include thermoplastics and elastomers such as polyurethane. In the examples: (1) polyvinylpyridine is quaternized with dimethyl sulphate, reacted with the lithium salt of TCNQ, and mixed in dimethyl formamide with free TCNQ, (2) and (3) the procedure of (1) is followed but the quaternization is with methyl iodide followed by conversion to the chloride form using an anion exchange column, (4) a styrene-2-vinylpyridine copolymer is quaternized using n-butyl iodide and converted to the TCNQ salt by reaction with the lithium salt of TCNQ, followed by addition of free TCNQ, (5) poly-(4-dimethylamino styrene) was quaternized with methyl iodide, treated with lithium TCNQ and free TCNQ added, (6) poly - (2,6 - dimethyl - phenylene) ether was chlorinated, reacted with (CH3)3N, treated with lithium TCNQ, and free TCNQ added, (7) polyethyleneimine was quaternized with dimethyl sulphate, reacted with lithium TCNQ and free TCNQ added, and (8) polyvinylimidazole was quaternized with methyl iodide, reacted with lithium TCNQ, and free TCNQ added.ALSO:Films are formed by coating glass slides with a composition comprising a salt of a polymer having quaternary nitrogen cationic groups and of 7, 7, 8, 8-tetracyanoquinodimethane (TCNQ), said salt containing a sufficient quantity of additional TCNQ to give the composition a conductivity greater than 10-10 mho per cm.. Exemplified polymers are those of vinyl pyridine, vinyl pyridine and styrene, aminostyrene, ethyleneimine, N-vinyl-imidazole and a polyphenylene ether. |
