A series of phosphine oxide-functionalized polyfluorene derivatives,PFH-PO-40-1 (P1),PFH-PO-20-1 (P2),PFH-PO-10-1 (P3),and PFH-PO-1-1 (P4),were prepared via a palladium-mediated Suzuki cross-coupling reaction.The stru...A series of phosphine oxide-functionalized polyfluorene derivatives,PFH-PO-40-1 (P1),PFH-PO-20-1 (P2),PFH-PO-10-1 (P3),and PFH-PO-1-1 (P4),were prepared via a palladium-mediated Suzuki cross-coupling reaction.The structures and purities of all polymers were fully characterized by 1H and 13C NMR,UV-vis and photoluminescent spectroscopy,gel permeation chromatography,and TGA/DSC.Their emission features showed single broad peaks at about 445 nm in film,compared with those in dilute solutions,which might be caused by some degree of aggregation in the excited states of the backbones.The best electroluminescence (EL) performance of these polymers with configuration of ITO/PEDOT:PSS/Polymer/Alq3/LiF/Al was obtained from P1 (current efficiency was 4.2 Cd/A at 6V).展开更多
通过Suzuki偶联聚合反应得到D-A-D型聚芴衍生物的关键中间体2,7-二(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)-9,9-二辛基芴.应用一维和二维核磁共振技术(1 H NMR,13 C NMR,DEPT,1 H-1 H COSY,HMQC,HMBC)对该化合物进行了结构表征,准确归...通过Suzuki偶联聚合反应得到D-A-D型聚芴衍生物的关键中间体2,7-二(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)-9,9-二辛基芴.应用一维和二维核磁共振技术(1 H NMR,13 C NMR,DEPT,1 H-1 H COSY,HMQC,HMBC)对该化合物进行了结构表征,准确归属了它们的1 H,13 C信号,为其结构鉴定提供了重要依据.展开更多
基金supported by the National Basic Research Program of China (2006CB921602 and 2009CB623601)National Natural Science Foundation of China,and Hewlett Packard Company
文摘A series of phosphine oxide-functionalized polyfluorene derivatives,PFH-PO-40-1 (P1),PFH-PO-20-1 (P2),PFH-PO-10-1 (P3),and PFH-PO-1-1 (P4),were prepared via a palladium-mediated Suzuki cross-coupling reaction.The structures and purities of all polymers were fully characterized by 1H and 13C NMR,UV-vis and photoluminescent spectroscopy,gel permeation chromatography,and TGA/DSC.Their emission features showed single broad peaks at about 445 nm in film,compared with those in dilute solutions,which might be caused by some degree of aggregation in the excited states of the backbones.The best electroluminescence (EL) performance of these polymers with configuration of ITO/PEDOT:PSS/Polymer/Alq3/LiF/Al was obtained from P1 (current efficiency was 4.2 Cd/A at 6V).
文摘通过Suzuki偶联聚合反应得到D-A-D型聚芴衍生物的关键中间体2,7-二(4,4,5,5-四甲基-1,3,2-二氧杂硼烷-2-基)-9,9-二辛基芴.应用一维和二维核磁共振技术(1 H NMR,13 C NMR,DEPT,1 H-1 H COSY,HMQC,HMBC)对该化合物进行了结构表征,准确归属了它们的1 H,13 C信号,为其结构鉴定提供了重要依据.
