Patent ID: 8101290

Claim:
An organic compound having electron-transporting and/or hole-blocking performance, wherein said organic compound is one of multi-aryl substituted pyridine derivatives represented by the following formulas (a)-(f): wherein said organic compound is one of multi-aryl substituted pyridine derivatives represented by the following formulas (g)-(l): wherein R 1 in each formula is one independently selected from the group consisting of hydrogen, substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 3 -C 20 cyclic alkyl, substituted or unsubstituted C 1 -C 20 alkoxy, C 7 -C 50 aralkyl, C 6 -C 50 aryl and C 6 -C 50 aryloxy: R 2 R 2 ′, R 5 , R 5 ′ in each formula are independently selected from the group consisting of hydrogen, carboxyl, fluorinated methyl, cyano, nitro and C 2 -C 20 ester group, and at least one of R 2 , R 2 ′, R 5 , and R 5 ′ is selected from the group consisting of carboxyl, fluorinated methyl and cyano group; R 3 , R 3 ′, R 4 , R 4 ′ in each formula are independently selected from the group consisting of hydrogen, substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 3 -C 20 cyclic alkyl, substituted or unsubstituted C 1 -C 20 substituent alkoxy, C 7 -C 50 aralkyl, C 6 -C 50 aryl and C 6 -C 50 aryloxy.