苯乙炔悬挂取代的热致交联型芴-三苯胺交替聚合物的合成与表征  

Synthesis and Characterization of Phenylethynyl-Pendent-Decorated Thermal-Crosslinkable Alternating Polymer with Fluorene-Triphenylamine as Backbone

作　　者：杨圣雄[1] 蒲大龙[1] 周森[1] 李田勇[1] 秦红梅[1] 石伟[1] 

机构地区：[1]新疆大学化学化工学院,石油天然气精细化工教育部重点实验室,乌鲁木齐830046

出　　处：《功能高分子学报》2010年第4期345-350,共6页Journal of Functional Polymers

基　　金：国家自然科学基金项目(50903068);新疆维吾尔自治区高校科研计划项目(XJEDU2009S17);国家大学生创新性实验计划项目(081075511)

摘　　要：通过Suzuki偶合反应合成出由苯乙炔悬挂取代的芴-三苯胺类交替共轭聚合物聚(9,9-二辛基-2,7-芴-共-N-4-苯乙炔-4,4'-三苯胺)(PFT-PE),并通过NMR和FT-IR对其化学结构进行了表征。结果表明:该聚合物易溶于常用的有机溶剂,可通过溶液旋涂的方式进行薄膜制备。由PFT-PE薄膜的吸收起始波长可知其光学带宽为2.82 eV。其薄膜较溶液态的荧光光谱发生了显著的红移并且变宽,说明在固态下聚合物分子链间发生了一定的堆积。由其电化学起始氧化电位可知PFT-PE的最高能量占有轨道能级(HOMO)为-5.39 eV,其氧化过程具有高度的可逆性,说明该聚合物具有良好的电化学稳定性。悬挂炔键功能团的存在使得该聚合物无需外加引发剂即可在一定温度下发生分子间的交联反应。A kind of phenylethynyl-pendent-decorated conjugated polymer,consisting of alternating fluorene and triphenylamine gorups,（poly（9,）9-dioctyl）-2,7-fluorene-co-N-4-phenylethenyl-4,4＇-tripheny-（lamine）（PFT-PE）,was successfully synthesized via Suzuki coupling reaction.The chemical structure of PFT-PE was verified by NMR and FT-IR analyses.The polymer is highly soluble in common organic solvents,and exhibits good film-forming ability and thermal stability.The optical bandgap of this polymer is 2.82 eV,as deduced by its absorption onset.The PL spectrum of PFT-PE′s film showed substantial red-shift and broadening as relative to that of its THF solution,indicating the presence of intermolecular（aggregation） in solid state.The highest occupied molecular orbital（HOMO） level of PFT-PE is about（-5.39 eV,） as calculated by the oxidation onset of its CV curve.The highly reversible oxidation process indicates the good electrochemical stability PFT-PE possesses.PFT-PE can be thermally cured without the addition of any initiator due to the substitution of phenylethynyl pendant.

关 键 词：三苯胺 芴 空穴传输 交联 

分 类 号：TB324[一般工业技术—材料科学与工程]