Patent ID: 8445697

Claim:
A dye represented by formula I wherein G is an anchoring group, said anchoring group allowing a covalent coupling of said dye to a surface, said anchoring group being selected from —COOH, —SO 3 H, —PO 3 H 2 , —BO 2 H 2 , —SH, —OH, and —NH 2 , wherein A is selected from the group consisting of H, —CN, —NO 2 , —COOR, —COSR, —COR, —CSR, —NCS, —CF 3 , —CONR 2 , —OCF 3 , and C 6 H 5−m F m , in which m=1-5, and R is H or any straight or branched alkyl chain of general formula —C n H 2n+1 , in which n=0-12, wherein R 31 , R 32 , R 33 , R 34 , R 35 , R 36 , at each occurrence, are independently selected from H or any straight or branched chain of general formula —(CH 2 ) n CH 3 , —(CH 2 ) n —COOR, —(CH 2 ) n —OR, —(CH 2 ) n —SR, —(CH 2 ) n —NR 2 , and —((CH 2 ) p —O) n —CH 3 , in which n=0-12, p=1-4, and R is as defined above, or any substituted or non-substituted phenyl or biphenyl, wherein said conjugated system is represented by a moiety shown in formula II or a combination of any of the moieties represented by formula II, in which n 1 and n 2 =1-12, wherein R 3 is selected from H, —(CH 2 ) n CH 3 , —(CH 2 ) n —COOR, —(CH 2 ) n —OR, —(CH 2 ) n —SR, —(CH 2 ) n —NR 2 , and —((CH 2 ) p —O) n —CH 3 , in which p=1-4, n=0-12, and R is as defined above, and R 1 is selected from halogen or NO 2 , NH 2 , CN, SO 3 H, OH, H, —(CH 2 ) n CH 3 , —(CH 2 ) n —COOR, —(CH 2 ) n —OR, —(CH 2 ) n —SR, —(CH 2 ) n —NR 2 , and —((CH 2 ) p —O) n —CH 3 , in which p=1-4, n=0-12, and R is as defined above.