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Up to now, the defect state in organic semiconductors has still not been thoroughly studied, especially for the synthesized materials. 2,7-Dipyrenyl-9-phenyl-9-pyrenyl fluorene (DPPPF) was a wonderful synthesized luminescent material in organic electronics. Research has found that the capacitance could reflect the defect state density of the special positions in the depletion region. So in this report,...
In order to explore the influence of non-conjugated and conjugated pyrene on the properties of polymers, four alternating pyrene–fluorene linear copolymers, PDOF-PPF, PDAOPF-PPF, PDOF-P and PDAOPF-P (Scheme 1), were designed, synthesized and characterized. They show greatly higher thermal stability than their oligomers due to curving of polymer chain. They also show high T g due to high internal...
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