3-octylthiophene/3-methylthiophene copolymers

Figure 11.18. Chemical structure of 3-octylthiophene/3-methylthiophene copolymer.

In addition to the P[3MT-MG8] series of MIEC block copolymers prepared in our laboratories, a third series of block copolymers, poly(3-methylthiophene-co-3-octylthiophene)-block-poly[o>-methoxyocta(oxyethylene)methacrylate], abbreviated P[3MT,30T-MG8], have been synthesized. The reason we selected random copolymers of 3MT and 30T for the electronic conductive block is to combine the solubility and fusibility of SOT with the chemical and electrochemical stability of... 

Pei Q, Inganas O (1992) Poly(3-octylthiophene-co-3-methylthiophene), a processible and stable conducting copolymer. Synth Met 45 353-357... 

Reviewed below are random copolymerizations of thiophene, 3-methylthiophene, 3-butylthiophene, 3-hexylthiophene and 3-octylthiophene. The structure of polythiophene random copolymers is reviewed in Chapter 15 in a more comprehensive way. 

Thiophene (XI) copolymers have been prepared by Grig-nard coupling of 2,5-diiodo-3-methylthiophene and either 3-/i-butyl-2,5-diiodothiophene or 2,5-diiodo-3-w-octylthiophene. These materials were soluble in common organic solvents, had molecular weights of about 5000, and displayed conductivities of 4-6 S/cm after doping with I2 or NOSbp6 [42]. Chemical oxidative co-... 

Electrochemical polymerization of a mixture of 3-n-octylthiophene and 3-methylthiophene produces a pro-cessible copolymer with a 1 2.5 Cs Ci composition ratio... 

Random copolymers of 3-octylthiophene and 3-methylthiophene were prepared electrochemically and upon doping these copolymers were more thermally stable than the homopolymers [104]. 

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