Constructing Regioregular Star Poly(3-hexylthiophene) via Externally Initiated Kumada Catalyst-Transfer Polycondensation

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• 作者：Mingjian Yuan ; Ken Okamoto ; Hugo A. Bronstein ; Christine K. Luscombe
• 刊名：ACS Macro Letters
• 出版年：2012
• 出版时间：March 20, 2012
• 年：2012
• 卷：1
• 期：3
• 页码：392-395
• 全文大小：251K
• 年卷期：v.1,no.3(March 20, 2012)
• ISSN：2161-1653

文摘

A synthetic route was developed for the preparation of di- and trifunctional Ni complex-based initiators. Each initiator affords well-defined 2-arm (V-shaped) and 3-arm (Y-shaped) regioregular poly(3-hexylthiophene) (rr-P3HT) with controlled molecular weight and narrow polydispersities by the externally initiated Kumada catalyst-transfer polycondensation. The core spacer length and end o-tolylhalide group of the functional initiators exhibited differences in reactivity and show that the biphenyl spacers are effective for the synthesis of V-shaped and Y-shaped rr-P3HTs.