Copolymers from methylthiophene

Methylthiophene/2,6-naphthyridine copolymer Copolymer from 3-methylthiophene and 5.2.2 669... 

Copolymers from ruthenium complexes and 3-methylthiophene or bithiophene are prepared in acetonitrile, propylene carbonate nitromethane, and dichloromethane. Acetonitrile is generally the best solvent for the incorporation of the ruthenium complex into the polymer film, the ruthenium complex content in films being higher than in propylene carbonate, nitromethane, and dichloromethane [656]. Propylene carbonate containing BU4NPF6 is used for the electrochemical polymerization of 3-alkyloxymethylthiophene [661]. 

The covalent immobilization of an enzyme such as alcohol dehydrogenase on the surface of poly[3-(2-hydroxyethyl)thiophene] (cf. Sect. 2.1.3) is an interesting way to produce enzyme electrodes [111, 112]. Glucose oxidase is covalently immobilized at the surface of a copolymer from 3-methylthiophene... 

Figure 11. Cyclic votammetry (top) and in situ electronic conductivity from rotating-disk voltammetry [ , Fig. 9(C)] and sandwich electrode voltammetry [ , Fig. 9(B)] for poly(3-methylthiophene) in acetonitrile containing 0.1 M BU4CIO4.60 (Reprinted from J. Ochmanska and P. G. Pickup, In situ conductivity of poly-(3-methylthiophene) and (3-methylthiophene)x,-[Ru(2,2 -bipyridine)2 (3- pyrrol-l-ylmethyl pyridine)2]2+ copolymers, J. Electroanal. Chem. 297, 211-224, 1991, with kind permission from Elsevier Sciences S.A.)...

When comparing the 2D NMR spectrum of pure PETA with those of the copolymer MtETalS, it should be emphasized that the increase in the intensity of anisotrospic interactions from the pure PETA (see Figure 11.36) to the copolymer MtETalS (Figure 11.38) is explained by the increase of the 3-methylthiophene content in the functionalized copolymer chains, resulting from the more compact structure with a closer proximity between protons either in space or in bonding network. 

Methylthiophene/cL-methylstyrene copolymers The copolymers prepared from a monomer feed molar ratio of 0.57/0.43 (3-MT/a-MS) contains 13 mol% a-methylstyrene units and has a conductivity of 6 X 10 S cm . ... 

Methylthiophene/4-methylstyrene copolymers A copolymer with 33 mole% 4-methylstyrene units and prepared from a monomer feed ratio of 0.56/0.44 (3-MT/4-MS) has a conductivity of 4.6 x 10 " S cm . ... 

The polymerization reaction, i.e., the reaction of two radical cations or the reaction of a radical cation with a neutral monomer molecule, depends on the conditions during electrochemical polymerization [58, 627, 629, 630]. During the electrocopolymerization of 3-methylthiophene and 3-thienylacetic acid, a radical cation (of 3-methylthiophene) attacks at a neutral monomer (3-thienylacetic acid). It is possible to produce the copolymer at a potential at which only one of the monomer species can be oxidized [108]. Fig. 19 shows a partial model of interfacial reactions taking place during the electrogeneration of PT or poly(pyrrole) from acetonitrile solutions containing the electrolyte LiClO. . The relative influence of each of these reactions depends on the chemical and electrical conditions of synthesis [629] ... 

Copolymerization, Composites. The electrochemical copolymerization of 3-do-decylthiophene and 3-methylthiophene is carried out galvanostatically. A molar ratio of 1 1 gives a copolymer with an electrical conductivity of 260Scm [701]. A polymer containing a thiophene-benzene-thiophene unit is chemically or electrochemically prepared from the monomer l,4-di(2-thienyl)benzene with H, Me or OMe groups in 2,5 position of the phenylene ring [607],... 

Copolymers prepared from 3-octyl- and 3-methylthiophene and then doped with iodine have electrical conductivities up to 26 S cm" (in the case of 25 mol% of 3-methylthiophene) [40]. 

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