Patent ID: 7645402

Claim:
A nanoparticle composition comprising nanoparticles that are surface-bound with capping ligands and a dispersant composition represented by Formula 1 below: wherein A is selected from the group consisting of substituted and unsubstituted C 1 -C 30 alkyl, C 1 -C 30 alkenyl, C 1 -C 30 alkynyl, C 6 -C 30 aryl, C 6 -C 30 arylalkyl, C 1 -C 30 heteroalkyl, C 2 -C 30 heteroaryl, C 2 -C 30 heteroarylalkyl, C 5 -C 30 cycloalkyl, and C 2 -C 30 heterocycloalkyl groups; R 1 , R 2 , R 3 and R 4 are each independently hydrogen or a methyl group; R 5 is selected from the group consisting of —H, —CH 3 , —OH, —NH 2 , carboxylic acid and salts thereof, sulfonic acid and salts thereof, and phosphoric acid and salts thereof; and n is an integer from 2 to 45.