聚芴类电致发光材料*

聚芴与其衍生物是一类重要的电致发光聚合物,它们具有较高的光致发光效率，并且易于进行结构修饰，因此受到材料化学家们的高度关注。本文叙述的线索是聚合物结构与其电致发光性能之间的构效关系。通过化学修饰，可以调节材料的前线分子轨道、热和光谱稳定性，进而开发新的发光材料。文中首先简单介绍了聚芴类发光材料的聚合方法，然后把这些聚合物按结构不同分成两个部分介绍：一部分是主链仅含有共轭芴单元的聚合物，它们的化学修饰依赖于芴9位的活性碳原子；另一部分是通过共聚方法得到的主链含有芴和其它基团的聚合物。

Polyfluorenes and Its Derivatives for Electroluminescent Materials

As an important class of electroluminescent polymers,polyfluorene and its derivatives have been paid much attention because they have advantages of easy modification and high photoluminescence efficiency. As a whole in this review,the chemical modification is aimed at developing new electroluminescent materials through tuning frontier molecular orbitals,thermal and luminescent stability.The focus in this review is on the relationships between the structures of polymers and their light emission properties.The synthesis methods of the polymers are first concisely introduced.Then the polymers have been divided into two kinds according to the difference of chemical structure.The one is the polymers that the main conjugation chains are only comprised of fluorene units,whose chemical modification are based on the active C9 of fluorene moiety.The other is the polymers that the main chains are comprised of fluorene and other functional groups through copolymerization.