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|Section2= |Section3= }} Polydioctylfluorene (PDF) is an organic compound, a polymer of 9,9-dioctylfluorene, with formula (C13H6(C8H17)2)''n''. It is an electroluminescent conductive polymer that characteristically emits blue light. Like other polyfluorene polymers, it has been studied as a possible material for light-emitting diodes ==Structure== The monomer has an aromatic fluorene core -C13H6- with two aliphatic ''n''-octyl -C8H17 tails attached to the central carbon. Polydioctylfluorene (PFO) can be found in liquid-crystalline, glassy, amorphous, semi-crystalline or β-chain formation. This variety is on account of the intermolecular forces that PFO can participate in. The secondary forces present in PFO are typically van der Waals, which are relatively weak. These weak forces makes it a solid that can also be used as a film on a substrate. The glassy films formed by PFO chains form solutions in good solvents, meaning it is at least partially soluble. These van der Waals also add complexity to the microstructure of PFO, which is why it has a wide range of solid formations. Chain stiffness is also prominent in PFO, because of this it is predicted that the molecular weight is a factor of 2.7 lower than polystyrene, which can produce an approximation of 190 repeat units in a standard PFO chain. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polydioctylfluorene」の詳細全文を読む スポンサード リンク
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