Patent ID: 7611823

Claim:
A photosensitive polymer composition consisting essentially of: (a) a fluorophore-containing polymer comprising a construct of a fluorophore incorporated into a polymer unit selected from: wherein X is an electron donating moiety selected from the group: —NH 2 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , —NH(aryl), —N(aryl) 2 , —NHCO(C 1 -C 4 alkyl), 2-thiazolyl substituted with 0-2 R 2 ; 2-oxazolyl substituted with 0-2 R 2 ; 2-benzothiazolyl substituted with 0-4 R 2 ; 2-benzoxazolyl substituted with 0-4 R 2 ; and 2- or 4-pyridyl substituted with 0-4 R 2 , and N-carbazolyl substituted with 0-4 R 2 ; Y is a structural unit of a fluorophore substituted with 0-5 R 1 and is selected from the group: U and V, at each occurrence, are independently a bond, —CH═CH—, —CH═CH-phenylene-, or -phenylene-CH═CH—; n is 1-50; R 1 is independently amino, hydroxy, halogen, C 1 -C 6 alkoxy, C 1 -C 10 alkyl, C 1 -C 6 haloalkyl, SH, SCH 3 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , —NH(aryl), —N(aryl) 2 , —NHCO(C 1 -C 4 alkyl), —N═C═S, —NH(C═S)—O(C 1 -C 6 alkyl), —NH(C═S)—NH(C 1 -C 6 alkyl), or —NH(C═S)—N(C 1 -C 6 alkyl) 2 ; R 2 is amino, hydroxy, halogen, C 1 -C 6 alkoxy, C 1 -C 10 alkyl, C 1 -C 6 haloalkyl, SH, SCH 3 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , —NH(aryl), —N(aryl) 2 , —NHCO(C 1 -C 4 alkyl), —N═C═S, —NH(C═S)—O(C 1 -C 6 alkyl), —NH(C═S)—NH(C 1 -C 6 alkyl), —NH(C═S)—N(C 1 -C 6 alkyl) 2 , —CO 2 H, or —CO 2 (C 1 -C 6 alkyl); R 3 and R 4 , at each occurrence, are independently C 1 -C 16 alkyl, C 1 -C 10 haloalkyl, —(CH 2 ) 1-9 CO 2 H, —(CH 2 ) 1-9 CO 2 (C 1 -C 6 alkyl), —(CH 2 CH 2 O) 1-6 H, or —(CH 2 CH 2 O) 1-6 (C 1 -C 6 alkyl); and, (b) a photoacid generator selected from the group consisting of diphenyl iodide hexafluorophosphate, diphenyl iodide hexafluoroarsenate, diphenyliodide hexafluoroantimonate, diphenyl p-methoxyphenyl triflate, diphenyl p-toluenyl triflate, diphenyl p-isobutylphenyl triflate, diphenyl p-tert-butylphenyl triflate, triphenylsulfonium hexafluorophosphate, triphenylsulfonium hexafluoroarsenate, triphenylsulfonium hexafluoroantimonate, triphenylsulfonium triflate, dibutylnaphthylsulfonium triflate and mixtures thereof, wherein the photoacid generator induces protonation of the fluorene dye in the fluorophore-containing polymer using red to near-IR laser irradiation resulting in two-photon fluorescent imaging in Write Once Read Many times (WORM) optical data storage and two-photon fluorescent readout of stored data.