A compound of formula wherein n is an integer greater than 1; R 1 is selected from aryl, heteroaryl, fluoroaryl, and fluoroheteroaryl substituted with 1 or more fluorine atoms, and a crosslinkable group attached to aryl, heteroaryl, fluoroaryl, and fluoroheteroaryl substituted with 1 or more fluorine atoms, R 2 is selected from H, aryl, alkyl, fluoroalkyl, Cl, Br, I, heteroaryl, fluoroaryl substituted with 1 or more fluorine atoms, fluoroheteroaryl substituted with 1 or more fluorine atoms, a crosslinkable group attached to aryl, heteroaryl, fluoroaryl substituted with 1 or more fluorine atoms or fluoroheteroaryl substituted with 1 or more fluorine atoms, a crosslinkable group, and arylamino of formula wherein R 4 is selected from aryl, H, R 1, alkyl, and fluoroalkyl; R 7 is selected from aryl, heteroaryl, fluoroaryl substituted with 1 or more fluorine atoms, fluoroheteroaryl substituted with 1 or more fluorine atoms, and a crosslinkable group attached to aryl, heteroaryl, fluoroaryl, and fluoroheteroaryl substituted with 1 or more fluorine atoms; E is selected from O, S, (SiR 5 R 6) m wherein m is an integer of 1 to 20, (CR 5 R 6) m wherein m is an integer of 1 to 20, and combinations thereof, wherein R 5 and R 6 are each independently selected from H, F, alkyl, aryl, alkoxy, aryloxy, fluoroalkyl, fluoroaryl, fluoroalkoxy, fluoroaryloxy, a crosslinkable group, and a crosslinkable group attached to alkyl, aryl, alkoxy, aryloxy, fluoroalkyl, fouoroaryl, fluoroalkoxy, or fluoroaryloxy, provided that when E is (CR 5 R 6) m, and m is 1, at least one of R 5 and R 6 is not hydrogen or a hydrocarbon, wherein the crosslinkable group is selected from substituted vinyl groups, acrylate groups, propenyl, acryloyl, methacryloyl, cyclic ethers and siloxanes, and wherein the compound of formula is crosslinkable. n is an integer greater than 1; R 1 is selected from aryl, heteroaryl, fluoroaryl, and fluoroheteroaryl substituted with 1 or more fluorine atoms, and a crosslinkable group attached to aryl, heteroaryl, fluoroaryl, and fluoroheteroaryl substituted with 1 or more fluorine atoms, R 2 is selected from H, aryl, alkyl, fluoroalkyl, Cl, Br, I, heteroaryl, fluoroaryl substituted with 1 or more fluorine atoms, fluoroheteroaryl substituted with 1 or more fluorine atoms, a crosslinkable group attached to aryl, heteroaryl, fluoroaryl substituted with 1 or more fluorine atoms or fluoroheteroaryl substituted with 1 or more fluorine atoms, a crosslinkable group, and arylamino of formula wherein R 4 is selected from aryl, H, R 1, alkyl, and fluoroalkyl; R 7 is selected from aryl, heteroaryl, fluoroaryl substituted with 1 or more fluorine atoms, fluoroheteroaryl substituted with 1 or more fluorine atoms, and a crosslinkable group attached to aryl, heteroaryl, fluoroaryl, and fluoroheteroaryl substituted with 1 or more fluorine atoms; E is selected from O, S, (SiR 5 R 6) m wherein m is an integer of 1 to 20, (CR 5 R 6) m wherein m is an integer of 1 to 20, and combinations thereof, wherein R 5 and R 6 are each independently selected from H, F, alkyl, aryl, alkoxy, aryloxy, fluoroalkyl, fluoroaryl, fluoroalkoxy, fluoroaryloxy, a crosslinkable group, and a crosslinkable group attached to alkyl, aryl, alkoxy, aryloxy, fluoroalkyl, fouoroaryl, fluoroalkoxy, or fluoroaryloxy, provided that when E is (CR 5 R 6) m, and m is 1, at least one of R 5 and R 6 is not hydrogen or a hydrocarbon, wherein the crosslinkable group is selected from substituted vinyl groups, acrylate groups, propenyl, acryloyl, methacryloyl, cyclic ethers and siloxanes, and wherein the compound of formula is crosslinkable.