US 7,320,848 B2
Poly(azine)-based charge transport materials
Zbigniew Tokarski, Woodbury, Minn. (US); Nusrallah Jubran, St. Paul, Minn. (US); Vytautas Getautis, Kaunas (Lithuania); Vygintas Jankauskas, Vilnius (Lithuania); Tadas Malinauskas, Kaunas (Lithuania); and Edmundas Montrimas, Vilnius (Lithuania)
Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of)
Filed on Mar. 31, 2004, as Appl. No. 10/814,938.
Prior Publication US 2005/0221211 A1, Oct. 06, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 5/06 (2006.01)
U.S. Cl. 430—70  [430/74; 430/126; 548/444] 14 Claims
 
1. A charge transport material comprising a polymer having the formula

OG Complex Work Unit Drawing
where X1 and X2 are, each independently, a linking group;
Ar comprises an aromatic group;
R1, R2, and R3 comprise, each independently, H, an alkyl group, an alkenyl group, an alkynyl group, an aromatic group, or a heterocyclic group; and
n is a distribution of integers between 1 and 100,000 with an average value of greater than one.