Photosensitive polymeric material for worm optical data storage with two-photon fluorescent readout

A photosensitive composition consisting essentially of:

• (a) a fluorophore compound of Formula II:
• wherein X is an electron donating moiety selected from the group:
• —NH2, —NH(aryl),
• 2-benzoxazolyl substituted with 0-4 R2;
• and 2- or 4-pyridyl substituted with 0-4 R2, and N-carbazolyl substituted with 0-4 R2;
• Z is an electron accepting moiety selected from at least one of CN, —N═C═S, NO2, —NH(C═S)—O(C1-C6 alkyl), —NH(C═S)—NH(C1-C6 alkyl), —NH(C═S)—N(C1 -C6 alkyl)2, —P(═O)(OH)2, —P(═O(OH)(O—C1-C6 alkyl), —P(═O)(O—C1-C6 alkyl)2, —N-succinimidyl;
• U and V, at each occurrence, are independently —CH═CH—,
• —CH═CH-phenylene-, or -phenylene-CH═CH—;
• R1 is independently amino, hydroxy, halogen, C1-C6 alkoxy, C1-C10 alkyl, C1-C6 haloalkyl, SH, SCH3, —NH(C1-C6 alkyl), —N(C1-C6 alkyl)2, —NH(aryl), —N(aryl)2, —NHCO(C1-C4 alkyl), —N═C═S, —NH(C═S)—O(C1-C6 alkyl), —NH(C═S)—NH(C1-C6 alkyl), or —NH(C═S)—N(C1-C6 alkyl)2;
• R2 is independently amino, hydroxy, halogen, C1-C6 alkoxy, C1-C10 alkyl, C1-C6 haloalkyl, SH, SCH3, —NH(C1-C6 alkyl), —N(C1 -C6 alkyl)2, —NH(aryl), N(aryl)2, —NHCO(C1-C4 alkyl), —N═C═S, —NH(C═S)—O(C1-C6 alkyl), —NH(C═S)—NH(C1-C6 alkyl), —NH(C═S)—N(C1-C6 alkyl)2, —CO2H, or —CO2(C1-C6 alkyl);
• and
• R3 and R4, at each occurrence, are independently C1-C16 alkyl, C1-C10 haloalkyl, —(CH2)1-9CO2H, —(CH2)1-9CO2(C1-C6 alkyl), —(CH2CH2O)1-6H, or —(CH2CH2O)1-6(C1-C6 alkyl);
• R8 and R8a are independently H, halogen, C1-C6 alkoxy, C1-C10 alkyl, or C1-C6 haloalkyl;
• provided that when Z is H, CN, NO2, C1-C8 alkyl, then V is —CH═CH-phenylene-, or -phenylene-CH═CH—;
• provided that when X is other than —N(phenyl)2, R3 and R4 are ethyl, and V is —CH═CH-phenylene-, Z is other than NO2 or —P(═O)(OCH2CH3)2;
• provided that when X is other than —N(phenyl)2, R3 and R4 are ethyl, hexyl, octyl, or decyl, and V is other than a bond, Z is other than —N(phenyl)2 or 2-benzothiazolyl;
• (b) a photoacid generator;
• and
• (c) a polymer binder selected from at least one of polystyrene and derivatives thereof, polyacrylates, polymethacrylates, polycarbonates, polyurethanes, polysiloxanes, nylons and polyesters.