Hetero diels-alder adducts of pentacene as soluble precursors of pentacene
US7125989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2002 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Mar 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention describes organic solvent-soluble Diels-Alder adducts of polycyclic aromatic compounds, such as, oligothiophene, perylene, benzo[ghi]perylene, coronene and polyacenes, with variety of dienophiles containing at least one heteroatom and in some cases two heteroatoms bonded to aromatic moiety, such as, thioxomalonates, azodicarboxylates, thialdehyde, acylnitroso and N-sulfinylamides. The Diels-Alder adducts are prepared by a simple, one step cycloaddition reaction of the polycyclic aromatic compounds, such as, pentacene, or other fused aromatic compounds, with heterodienophiles. The Diels-Alder adducts according to the present invention all form soluble adducts with pentacene and can be converted back to pentacene by retro-Diels-Alder reaction at moderate (60–250° C.) temperatures both in bulk, in solution or as thin-films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.