π-conjugated mono-, oligo- and polymeric compounds,...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C549S041000

Reexamination Certificate

active

07973074

ABSTRACT:
Monomeric, oligomeric or polymeric compound corresponding to the following formula (I):in which:A represents an optionally substituted polycyclic group, the said polycyclic group comprising at least one group capable of making possible the attachment of a chromophoric group,X1and X2, which are identical or different, each independently represent a group of formula (II):in which:B and D, which are identical or different, each independently represent an aromatic carbon ring or an aromatic heterocycle which is optionally substituted.Use of the said compound in an optoelectronic device, such as a photovoltaic cell, a field-effect transistor or an electrochemical sensor.Photovoltaic cell comprising an active layer comprising an electron donor composed of the said compound.

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