TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The catalyst is preferably palladium or nickel catalysts, which is used preferably for the regioselective polymerization.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The apparatus used in the continuous process is micro-mixer, micro-reactor and micro-heat exchanger.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The thiophene derivative is of formula (I). The metal-organic compounds are Grignard compounds of formula (R1-Mg-X) (II), where the metal is magnesium or zinc. The solvent contains at least an ether component.R = H (at position 3 or 4) or an organic group, preferably non-reactive or a protective group containing preferably 5 or more carbon atoms;R1 = 1-12C, preferably 2C-alkyl; andX, Xa = a leaving group, which is a halo, preferably Cl, Br (preferred) or I.    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: The process comprises carrying out polymerization reaction by reacting a polymerization active monomers from thiophene derivatives with a catalyst solution containing at least a catalyst, and continuously polymerizing by supplying at least a polymerization active monomer. The process takes place at 20-200 degrees C and 1-30 bar. Preferred Components: The amount of the polymerization active monomer in step (ii) is 1-3 molar equivalent. EXAMPLE - 2,5-Dibromo-3-hexylthiophene (4 mmol) in tetrahydrofuran (THF) (20 ml) was heated under inert gas. Further 1M solution of methylmagnesium bromide in hexane (4 mmol) was added to the reaction solution, heated for 1 hour and cooled at 15 degrees C. Subsequently nickel diphenylphosphino propane dichloride (0.4 mmol) was added as a catalyst to the reaction solution. The reaction mixture was subsequently continuously pumped through a reaction capillary at 100 degrees C and 5 bar. The obtained product was precipitated in methanol, separated, washed with methanol and is dissolved in THF to obtain corresponding thiophene compound with a conversion rate of 75-80%, molecular weight of 7760 g/mol, number average molecular weight of 2700 g/mol and polydispersion index of 2.8.