Multi-armed catechol compound blends

1. A compound comprising formula (I):

wherein

each DHPD a , DHPD 1 , DHPD p , independently, can be the same or different;

each L b , L k , and L o , is

each L d , L i and L m represent a bond between the O and respective PA of the compound;

each PA c , PA j and PA n , independently, can be the same or different;

e is a value from 1 to about 3;

f is a value from 1 to about 10;

g is a value from 1 to about 3;

h is a value from 1 to about 10; wherein f+h is a value from 6 to about 20;

each of R 1 , R 2 and R 3 , independently, is a branched or unbranched alkyl group having at least 1 carbon atom;

each PA, independently, is a poly(alkylene oxide) polyether having a molecular weight between about 1,500 and about 5,000 daltons; and

each DHPD, independently, is a dopamine, 3,4-dihydroxyphenylalanine, 3,4-dihydroxyphenyl ethanol or 3,4-dihydroxyhydrocinnamic acid residue.

2. The compound of claim 1 , wherein each of PA c , PA j and PA n is a polyethylene glycol polyether.

3. The compound of claim 1 , wherein each of L b , L k , and L o are amide linkages and L d , L i and L m represent ether bonds.

4. The compound of claim 1 , wherein e and g each have a value of 1 and f is 4 or 6.

5. The compound of claim 1 , wherein h is 1.

6. The compound of claim 1 , wherein each of DHPD a , DHPD 1 , DHPD p is a dopamine residue;

each of L d , L i and L m represent ether bonds;

each of PA c , PA j and PA n are polyethylene glycol polyether derivatives comprising a hydroxyl terminal residue, each having a molecular weight of between about 1,500 and about 5,000 daltons;

e is 1;

f is 1;

g is 1; and

h is 6.

7. A compound comprising formula (I):

wherein

each of DHPD a , DHPD l , DHPD p is a dopamine residue;

each of the linkers, L b , L k , and L o , form an amide linkage between the dopamine residue and one terminal portion of a dicarboxylic acid residue and an ester between the second terminal portion of the dicarboxylic acid residue and the terminal portion of the polyethylene glycol polyether;

each L b , L k , and L o , independently, can be the same or different;

each of L d , L i and L m represent ether bonds;

each of PA c , PA j and PA n are polyethylene glycol polyether derivatives comprising a hydroxyl terminal residue, each having a molecular weight of between about 1,500 and about 3,500 daltons;

each PA c , PA j and PA n , independently, can be the same or different;

wherein e, f and g each have a value of 1; and

h is 6.

8. The compound of claim 7 , wherein each of the linkers L b , L k , and Lo, independently, can be the same or different, and is selected from the group consisting of