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吉林大学, 超分子结构与材料教育部重点实验室
收稿:2004-08-19,
修回:2005-1-10,
纸质出版:2006-01-20
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李茂, 路萍, 张海全, 陆丹, 马於光. 含芴聚合物电子亲合能和电离能的确定[J]. 发光学报, 2006,27(1): 80-84
LI Mao, LU Ping, ZHANG Hai-quan, LU Dan, MA Yu-guang. Electrochemical Determination of the Ionization Potential and Electron Affinity of PF Derivatives[J]. Chinese Journal of Luminescence, 2006,27(1): 80-84
通过循环伏安法测量了若干含芴交替共聚物的氧化还原电位
并通过氧化还原的起始电位点来确定聚合物的能级结构。从结果分析
在聚芴中引入系列的基团改变了聚合物的电离能、电子亲合能及带隙能。其中引入联吡啶后
带隙能变化不大
但电子亲合能明显升高
增加了电子的注入能力;引入带有七元环的联苯
特别是引入间位连接带有七元环的联苯后
带隙能明显增加。与聚芴比较
七元环聚合物电离能(
I
p
)从5.60eV增加到5.81eV
而电子亲合能(
E
a
)从2.05eV增加到2.42eV
带隙能从3.55eV增加到3.82eV。这与光谱得到的带隙能得到了较好的对应。
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