Patent ID: 7019129

Claim:
A quencher of excited state energy having the formula: wherein, R 1 , R 2 and R 3 are members independently selected from substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl and substituted or unsubstituted unsaturated alkyl, with the proviso that at least two of R 1 , R 2 and R 3 are members selected from substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl; X, Y and Y′ are members independently selected from reactive functional groups, wherein at least one of X, Y and Y′ is: wherein, R 9 and R 10 are members independently selected from alkyl and substituted alkyl; and X 1 is a member selected from CH 3 , —OH, COOH, —NR′R″, —SH, and —OP(OX 3 )(N(X 4 ) 2 ); X 2 is OP(OX 3 )(N(X 4 ) 2 ) wherein, R′, R″, are members independently selected from H, and substituted or unsubstituted alkyl; and X 3 and X 4 are members independently selected from substituted and unsubstituted alkyl; f is a number selected from 0 to 4, inclusive, such that when (f×s) is greater than 1, the Y′ groups are the same or different; m is a number selected from 1 to 4, inclusive, such that when m is greater than 1, the X groups are the same or different; n is a number from 0 to 6, inclusive, such that when (n×t) is greater than 1, the Y groups are the same or different; s is a number from 1 to 6, inclusive, such that when s is greater than 1 the R 3 groups are the same or different; and t is a number from 1 to 6, inclusive, such that when t is greater than 1 the R 2 groups are the same or different.