Patent ID: 8877353

Claim:
An organometallic complex having a chemical structure of structure I: wherein R 1 -R 14 are independently hydrogen, halogen, hydroxyl, an unsubstituted alkyl, a substituted alkyl, cycloalkyl, an unsubstituted aryl, a substituted aryl, acyl, alkoxy, acyloxy, amino, nitro, acylamino, aralkyl, cyano, carboxyl, thio, styryl, aminocarbonyl, carbamoyl, aryloxycarbonyl, phenoxycarbonyl, or an alkoxycarbonyl group, each R 1 -R 14 can independently form 5-8 member ring(s) with adjacent R group(s), X 1 -X 20 are independently boron, carbon, nitrogen, oxygen, or silicon.