| 摘要 |
<p>PURPOSE: Provided are polymeric fluorescent substance showing fluorescence in solid state, which is excellent in solubility to organic solvents and has higher efficiency and longer lifetime in applying as a polymer light-emitting device(LED), and polymer light-emitting device. CONSTITUTION: The polymeric fluorescent substance shows fluorescence in solid state and has a number average molecular weight, in terms of polystyrene, of 1 x 10¬4 to 1 x 10¬8. The polymeric compound also have at least one repeated units of formula(1):-Ar1-(CR1=CR2)j- and the ratio of hole drift mobility(μH) to electron drift mobility(μE) of 0.1 to 10. In the formula, Ar1 is a divalent group forming carbon-carbon bonds with adjacent two groups respectively, the divalent group being an arylene group having 6 to 60 carbon atoms participating in conjugation or a heterocyclic compound group having 3 to 60 carbon atoms participating in conjugation, and the arylene group and heterocyclic compound group may further have a substituent. Each of R1 and R2 independently represents a group selected from a hydrogen atom, linear, branched or cyclic alkyl groups having 1 to 20 carbon atoms, aryl groups having 6 to 60 carbon atoms, heterocyclic compound groups having 3 to 60 carbon atoms and a cyano group, and the aryl group and heterocyclic compound group may further have a substituent. The symbol j is 0 or 1.</p> |
