Nanoparticle including multi-functional ligand and method

US9212056B2 · kind B2 · utility

Assignee

• QD VISION, INC. · US

Inventors

• Craig Breen · Somerville, US
• John R. Linton · Concord, US

Key dates

• Filing date: Jan 28, 2011
• Grant date: Dec 15, 2015
• Expiry date: Oct 27, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/587
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A nanoparticle including an inorganic core comprising at least one metal and/or at least one semi-conductor compound comprising at least one metal includes a coating or shell disposed over at least a portion of a surface of the core. The coating can include one or more layers. Each layer of the coating can comprise a metal and/or at least one semiconductor compound. The nanoparticle further includes a ligand attached to a surface of the coating. The ligand is represented by the formula: X-Sp-Z, wherein: X represents: a primary amine group, a secondary amine group, a urea, a thiourea, an imidizole group, an amide group, a carboxylic acid or carboxylate group, a phosphonic or arsonic acid group, a phosphoric acid group, a phosphate group, a phosphite group, a phosphinic acid group, a phosphinate group, a phosphine oxide group, a phosphinite group, a phosphine group, an arsenic acid group, an arsenate group, an arsenous acid group, an arsenite group, an arsinic acid group, an arsine oxide group, or an arsine group; Sp represents a group capable of allowing a transfer of charge or an insulating group; and Z represents a multifunctional group including three or more functional groups ca…