Luminescent m-Carborane-Based π-Conjugated Polymer

详细信息    查看全文

• 作者：Kenta Kokado ; Yuichiro Tokoro ; Yoshiki Chujo
• 刊名：Macromolecules
• 出版年：2009
• 出版时间：April 28, 2009
• 年：2009
• 卷：42
• 期：8
• 页码：2925-2930
• 全文大小：232K
• 年卷期：v.42,no.8(April 28, 2009)
• ISSN：1520-5835

文摘

A series of m-carborane-based π-conjugated polymers were successfully synthesized via Sonogashira−Hagihara polycondensation reaction. Diiodo-m-carborane monomer underwent efficient polycondensation reaction with both electron-donating and electron-accepting diyne comonomers. The wide-angle structure of m-carborane monomer allowed the preparation of polymers with high molecular weights (M_n = 26600−36400 g mol⁻¹) and good polymerization degrees (DP = 31−56). UV−vis absorption study in dilute CHCl₃ solution revealed π-conjugation extension of a p-phenylene−ethynylene segment by introducing m-carborane moieties into the polymer backbone. Further, the lack of C−C bond in the carborane cluster leads to polymers exhibiting intense blue emission in solution state (Φ_F = 0.11−0.26).