Patent ID: 6558890
Filing Date: 2003-05-06
Classification: G03C

Abstract:
An imaging element comprising an imaging layer having associated therewith a compound having the following structure: wherein:PUG is a photographically useful group; LINK 1 and LINK 2 are linking groups; TIME is a timing group; l is 0 or 1; m is 0, 1, or 2; n is 0 or 1; 1+n&gE;0; R12 is hydrogen, or a substituted or unsubstituted alkyl, cycloalkyl, aryl or heterocyclic group; or R12 is joined with T, R9 or an R11 substituent to form a ring; T is a substituted or unsubstituted, referring to the following groups, alkyl group, cycloalkyl group, aryl, or heterocyclic group, a monovalent electron withdrawing group, a divalent electron withdrawing group capped by an organic group, a heteroaromatic group; or T is joined with R12, R9 or an R11 substituent to form a ring; or two T groups can combine to form a ring; t is 0, 1, or 2, and when t is not 2, the necessary number of hydrogens are present instead; R9 is a substituted or unsubstituted alkyl, aryl group, or it can join with R12, T or an R11 substituent to form a ring; Q is independently selected nitrogen or substituted or unsubstituted carbon CR11; R11 is hydrogen, a substituted or unsubstituted alkyl, aryl group, or two R11 attached to contiguous carbons can join to form an aromatic, heteroaromatic or partially saturated carbocyclic ring; or it can join with R12, R9, or T to form a ring; and wherein LINK 1 and LINK 2 are independently of Structure II: â€ƒwherein X represents carbon or sulfur; Y represents oxygen, sulfur or Nâ€”R1, where R1 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl; p is 1 or 2; Z represents carbon, oxygen or sulfur; r is 0 or 1; with the proviso that when X is carbon, both p and r are 1, when X is sulfur, Y is oxygen, p is 2 and r is 0; # denotes the bond to PUG (for LINK 1) or TIME (for LINK 2); $ denotes the bond to TIME (for LINK 1) or T(t) substituted carbon (for LINK 2).