All-conjugated ABC-block-copolymer formation with a varying sequence via an unassociated catalyst

作者：Verswyvel Michiel; Steverlynck Joost; Hadj Mohamed Slim; Trabelsi Mahmoud; Champagne Benoît; Koeckelberghs Guy^*

来源：Macromolecules, 2014, 47(14).

DOI：10.1021/ma500610p

• Advanced structure
• Catalyst system
• DFT calculation
• Fluorescence measurements
• Selenophene
• Triblock-copolymers

This manuscript consists of two parts which focus on enhancing control over the polymerization of conjugated polymers. In the first part, the controlled chain-growth character of the polymerization of poly(selenophene) using Pd(Ruphos) as a catalyst system is demonstrated. Next, all-conjugated thiophene-fluorene-selenophene triblock-copolymers are synthesized in all possible orders using this catalyst. Subsequent, the properties of these advanced structures are assessed using GPC chromatography and 1H NMR, UV-vis, and fluorescence measurements. DFT calculations were performed to explain the unusual independence of the monomer sequence during the polymerization, traditionally observed in other chain-growth protocols for conjugated polymers.

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