Alkyl-acid ligands for nanocrystals

摘要

Quantum-dot binding ligands with easy to synthesize alkyl-acids are provided. The quantum-dot binding ligands include a multiplicity of carboxy binding ligands in combination with an alkyl backbone, and optionally a solubilizing group. The ligands and coated nanostructures of the present invention are useful for close packed nanostructure compositions, which can have improved quantum confinement and/or reduced cross-talk between nanostructures.

主权项

1. A composition comprising:
(a) a quantum dot binding-ligand having the formula: wherein each R1a, R1b, R2 and R4 is independently selected from the group consisting of H, C1-20 alkyl, C1-20 heteroalkyl, C2-20 alkenyl, C2-20 alkynyl, and cycloalkyl; each R3a and R3b is independently selected from the group consisting of H and C1-6 alkyl; subscripts m and n are each independently 0 or 1, such that m+n is 1; and subscript p is an integer of from 5 to 500; wherein when subscript m is 0, then one of R1a and R1b is H, and R2 and the other of R1a and R1b are selected from the group consisting of C8-20 alkyl, C8-20 heteroalkyl, C8-20 alkenyl, C8-20 alkynyl, and cycloalkyl; when subscript m is 1, then R1a and R2 are both H and R1b is selected from the group consisting of C8-20 alkyl, C8-20 heteroalkyl, C8-20 alkenyl, C8-20 alkynyl, cycloalkyl and aryl; and (b) a population of InP light emitting quantum dots (QDs).