Aromatic chalcogen compounds and their use
AssigneeE. I. Du Pont de Nemours and Company
InventorsNora Radu, Steven Shuey, Ying Wang
Life of this patent
Estimating the term…
Abstract
This invention relates to dibenzothiophene, dibenzofuran, dibenzopyran, and dibenzothiapyran compounds. This invention also relates to layers and devices including at least one of the above compounds.
Claims23
A compound (Rc-X—)nRd wherein:
- Rc is the same or different at each occurrence and comprises a dibenzo[O,S]furpyran substructure;
- X is the same or different at each occurrence and is independently selected from a single bond, an alkylene group, an arylene group, a arylenealkylene group, a heteroalkylene group, a heteroarylene group, a heteroarylenealkylene group, —C(═O)O—, —OC(═O)—, —S—, and an ether group;
- Rd is selected from the group consisting of a multivalent alkyl group, a multivalent aryl group, a multivalent heteroalkyl group, a multivalent heteroaryl group, and a multivalent heteroarylalkyl group and
- n is an integer from 2 to 6.
A compound CM-1
- wherein:
- Y is one of S and O;
- m is one of 0 and 1;
- and
- at least one of Rg, Ri, Rj, Rk, Rl, and Rm is selected from an alkyl group, aryl group, aralkyl group, heteroalkyl group, and a heteroarylene group.
A charge transport layer comprising a charge transport compound that comprises at least one dibenzo[O,S]furpyran group.
A device comprising an anode, a cathode, and an active layer interposed between the anode and cathode, and further comprising a charge transport compound that comprises at least one dibenzo[O,S]furpyran group in a layer selected from the active layer, a charge transport layer interposed between the active layer and the cathode, and combinations thereof.
Dependencies are inferred from the claim text.