Compositions comprising a linked acceptor moiety

1. A non-nucleic acid polymer bearing a linked acceptor moiety but not a linked donor moiety, wherein the non-nucleic acid polymer comprises subunits having the formula:

wherein

each J is the same or different and is selected from the group consisting of H, R 1 , OR 1 , SR 1 , NHR 1 , NR 1 2 , F, Cl, Br and I;

each K is the same or different and is selected from the group consisting of O, S, NH and NR 1 ;

each R 1 is the same or different and is an alkyl group having one to five carbon atoms which may optionally contain a heteroatom or a substituted or an unsubstituted aryl group;

each A is selected from the group consisting of a single bond, a group of the formula —(CJ 2 ) n — and a group of the formula —(CJ 2 ) s C(O)—;

each t is an integer having the value of 1 or 2;

each u is an integer having the value of 1 or 2;

each s is an integer having the value between 1 and 5; and

each L is the same or different and at least one L comprises the acceptor moiety but not the donor moiety.

2. The non-nucleic acid polymer of claim 1 , wherein

each L is independently selected from the group consisting of J, adenine, cytosine, guanine, thymine, uridine, 5-methylcytosine, 2- aminopurine, 2-amino-6-chloropurine, 2,6-diaminopurine, hypoxanthine, pseudoisocytosine, 2-thiouracil, 2-thiothymidine, other naturally occurring nucleobase analogs, other non-naturally occurring nucleobases, substituted and unsubstituted aromatic moieties, biotin, and dabcyl.

3. The non-nucleic acid polymer of claim 2 , wherein the non-nucleic acid polymer comprises a naturally occurring nucleobase attached to the aza nitrogen of N-[2-(aminoethyl)]glycine backbone through a methylene carbonyl linkage.

4. The non-nucleic acid polymer of claim 1 , wherein the acceptor moiety is dabcyl.

5. The non-nucleic acid polymer of claim 1 , wherein the acceptor moiety is a quencher moiety.

6. The non-nucleic acid polymer of claim 5 , wherein the quencher moiety is dabcyl.