Media type: E-Article Title: Influence of the halogen and organometallic function in a KCTP (Co)polymerization Contributor: Hardeman, Tine; De Becker, Jasmine; Koeckelberghs, Guy Published: Wiley, 2016 Published in: Journal of Polymer Science Part A: Polymer Chemistry, 54 (2016) 23, Seite 3701-3706 Language: English DOI: 10.1002/pola.28263 ISSN: 0887-624X; 1099-0518 Keywords: Materials Chemistry ; Organic Chemistry ; Polymers and Plastics Origination: Footnote: Description: <jats:title>ABSTRACT</jats:title><jats:p>The effect of changing the halogen and the organometallic function in a Kumada Catalyst Transfer Polycondensation (KCTP) of poly(3‐alkylthiophene)s (P3AT) is investigated. On the one hand, the bromine substituent is replaced with chlorine in the commonly used 2‐bromo‐5‐chloromagnesio‐3‐hexylthiophene. The effect on the homopolymerization is clear, since the stickiness decreases remarkably, but copolymerizations are hardly affected when a chlorinated monomer is used. Second, the option of changing the organometallic function is considered. Because also organozinc compounds provide a controlled P3AT polymerization with Ni(dppp)Cl<jats:sub>2</jats:sub>, but are less reactive than organomagnesium compounds, the effect of using zinc in one monomer during a copolymerization is investigated. However, it is found that the organometallic functions exchange during mixing of the monomers. Consequently, no effect is observed during copolymerizations. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. <jats:bold>2016</jats:bold>, <jats:italic>54</jats:italic>, 3701–3706</jats:p>