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US 8,525,131 B2Granted
Phosphorescent organic compounds
AssigneeThe Regents of the University of Michigan
InventorsJinsang Kim, Onas Bolton, Kangwon Lee, Eun Jeong Jeong, Bong-Gi Kim
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Abstract
Compositions providing metal-independent phosphorescence due to a directed heavy atom effect are provided. Methods of providing a phosphorescent composition are also provided where a directed heavy atom effect is maintained to cause the composition to be phosphorescent. Manufacture of phosphorescent compositions using intermolecular and intramolecular directed heavy atom effects are disclosed.
Claims20
A crystalline composition exhibiting metal-independent phosphorescence comprising:
- a first portion comprising a carbonyl group bonded to an aromatic group or an aromatic group having extended π-conjugation;
- a second portion comprising a halogen atom bonded to an aromatic group or an aromatic group having extended π-conjugation;
- and
- a non-covalent interaction between the oxygen of the carbonyl group and the halogen atom, wherein the distance between the oxygen of the carbonyl group and the halogen atom is less than the van der Waals radii of the oxygen of the carbonyl group and the halogen atom.
1 more element
Dependencies are inferred from the claim text.