All-Conjugated ABC-block-copolymer Formation with a Varying Sequence via an Unassociated Catalyst

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• 作者：Michiel Verswyvel ; Joost Steverlynck ; Slim Hadj Mohamed ; Mahmoud Trabelsi ; Beno卯t Champagne ; Guy Koeckelberghs
• 刊名：Macromolecules
• 出版年：2014
• 出版时间：July 22, 2014
• 年：2014
• 卷：47
• 期：14
• 页码：4668-4675
• 全文大小：489K
• ISSN：1520-5835

文摘

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鈥揻luorene鈥搒elenophene 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鈥搗is, 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.