Conjugated copolymers based on poly(fluorenylene vinylene) derivatives containing push¨Cpull units: Synthesis and characterization

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• 作者：Jilian N. de Freitas^a ; Rosamaria W.C. Li^b ; Ana Flá ; via Nogueira^a ; Jonas Gruber^b ;   ; ^{jogruber@iq.usp.br}
• 关键词：Poly(fluorenylene vinylene) ; Conjugated polymers ; Push&ndash ; pull ; Gilch route
• 刊名：Materials Chemistry and Physics
• 出版年：2011
• 出版时间：17 October 2011
• 年：2011
• 卷：130
• 期：1-2
• 页码：223-230
• 全文大小：660 K

文摘

In this work we present the synthesis, via the Gilch route, of two polymers: poly(9,9-dioctyl-2,7-fluorenylene vinylene) and poly(2-bromo-5-hexyloxy-1,4-phenylene vinylene), which contain fluorene and push¨Cpull (2-bromo-5-hexyloxy-1,4-phenylene) units, respectively. We also present the synthesis of novel copolymers based on the combination of these materials in different proportions. Using the Gilch route, the synthesis yields varied between 42 % and 71 % , and the average molar masses varied between 4 ¡Á 10³ g mol^? and 70 ¡Á 10³ g mol^?. The thermal, electrochemical and photophysical properties of these polymers were investigated, and their application as hole transporting materials in organic solar cells, in combination with a fullerene derivative (electron transport material), is also presented.