Copolymer and polymer light emitting device using the same

Active solid-state devices (e.g. – transistors – solid-state diode – Organic semiconductor material

Reexamination Certificate

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Details

C257SE51036, C528S211000, C528S219000, C528S008000, C252S500000, C252S301360

Reexamination Certificate

active

07982212

ABSTRACT:
A copolymer comprising a repeating unit of the following formula (1) and a repeating unit of the following formula (2):(wherein, a ring A and ring B represent each independently an aromatic ring optionally having a substituent. X is —O—, —S—, —S(═O)—, —S(═O)2—, —Si(R1)2—Si(R1)2—, —Si(R1)2—, —B(R1)—, —P(R1)—, —P(═O)(R1)—, —O—C(R1)2— or —N═C(R1)—, and R1represents a substituent. When there are two or more R1s in the same formula, they may be the same or different.)(wherein, Y is —O—, —S— or —C(═O)—. Ar1represents an aryl group optionally having a substituent or a monovalent heterocyclic group optionally having a substituent, and there is no substituent connected to atoms of the ring of Ar1, the atoms being adjacent an atom of Ar1connected to a nitrogen atom in the formula. R2represents a substituent, and n represents an integer of from 0 to 3. When there are two or more R2s in the formula, they may be the same or different.).

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