NOVELTY - Optical component (I) comprises quantum confined semiconductor nanoparticles (3), where at least a portion of the nanoparticles include a ligand (A) attached to a surface of the nanoparticles.    USE - The optical components are useful in a system, device, films, kit, thin film electroluminescent lamp, compositions and ink (all claimed). The optical components are useful in user-interface illumination, solid state lighting devices and displays. The quantum confined semiconductor nanoparticles are useful in light emitting devices, solid state lighting, displays, photodetectors, other lighting components, nonvolatile memory devices, solar cells, sensors and photovoltaic devices. The optical components are useful, when optically coupled to a light source, for displaying one or more illuminated patterns that correspond to the predetermined arrangements of the quantum confined semiconductor nanoparticles included in the optical components.    ADVANTAGE - The nanoparticle has higher quantum yield than if the same ligand was attached to the nanoparticle by a ligand exchange process.    DETAILED DESCRIPTION - Optical component (I) comprises quantum confined semiconductor nanoparticles (3), where at least a portion of the nanoparticles include a ligand of formula (X-Sp-Z) (A) attached to a surface of the nanoparticles.    X = primary amine, secondary amine, urea, thiourea, imidizole, amide, carboxylic acid or carboxylate, phosphoric acid, phosphate, phosphite, phosphinic acid, phosphinate, phosphine oxide, phosphinite, phosphine, arsenic acid, arsenate, arsenous acid, arsenite, arsinic acid, arsine oxide or arsine;    Sp = group capable of allowing a transfer of charge or insulating group; and    Z = multifunctional group including three or more functional groups capable of communicating a specific property or chemical reactivity to the nanoparticle, where at least three of the functional groups are chemically distinct, and Z is not reactive upon exposure to light.    INDEPENDENT CLAIMS are included for:    (1) an optical component (II) comprising a waveguide (2) component comprising 0.001-15 wt.% quantum confined semiconductor nanoparticles (3) based on the weight of the waveguide component, where at least a portion of the nanoparticles include (A);    (2) an optical component (III) comprising a waveguide component including a composition comprising quantum confined semiconductor nanoparticles and a host material, where the composition includes 0.001-15 wt.% quantum confined semiconductor nanoparticles based on the weight of the host material and at least a portion of the nanoparticles include (A);    (3) an optical component (IV) comprising a waveguide component including a layer comprising quantum confined semiconductor nanoparticles and a host material, where the layer includes 0.001-15 wt.% quantum confined semiconductor nanoparticles based on the weight of the host material and at least a portion of the nanoparticles include (A);    (4) an optical component (V) comprising a film including a carrier substrate including quantum confined semiconductor nanoparticles in a predetermined arrangement over a predetermined region of a surface of that, where the film is attached to a surface of a waveguide component and at least a portion of the nanoparticles include (A) attached to a surface of that;    (5) an optical component (VI) comprising a film including a carrier substrate including a composition comprising quantum confined semiconductor nanoparticles and a host material, where the composition is disposed in a predetermined arrangement over a predetermined region of a surface of that, the film is attached to a surface of a waveguide component and at least a portion of the nanoparticles include (A) attached to a surface of that;    (6) a system (VII) comprising (II) and a light source (1) optically coupled to the waveguide component;    (7) a system (VIII) comprising (VI) and a light source optically coupled to the waveguide component;    (8) a system (IX) comprising (III) and a light source optically coupled to the waveguide component;    (9) a device comprising (II);    (10) a composition (X) useful for altering the wavelength of visible or invisible light, comprising a host material and quantum confined semiconductor nanoparticles, where the nanoparticles are included in the composition in amount of 0.001-15 wt.% and at least a portion of the nanoparticles include (A) attached to a surface of that;    (11) a film (XI) comprising a carrier substrate including a predetermined arrangement of quantum confined semiconductor nanoparticles over a predetermined portion of a surface of that, where at least a portion of the nanoparticles include (A) attached to a surface of that;    (12) an optical component (XII) comprising (XI), where the film is attached to a surface of a waveguide component;    (13) a kit comprising a light source adapted for being optically coupled to a waveguide component and one or more films, where at least one film comprises a carrier substrate including quantum confined semiconductor nanoparticles disposed over a surface of that and at least a portion of the nanoparticles include (A) attached to a surface of that;    (14) a thin film electroluminescent lamp comprising quantum confined semiconductor nanoparticles disposed over a surface of that, where at least a portion of the nanoparticles include (A) attached to a surface of that;    (15) an ink composition (XII) comprising quantum confined semiconductor nanoparticles and a liquid vehicle, where the liquid vehicle comprises a composition including one or more functional groups that are capable of being cross-linked and at least a portion of the nanoparticles include (A); and    (16) an ink composition (XIII) comprising quantum confined semiconductor nanoparticles, a liquid vehicle and scatterers, where at least a portion of the nanoparticles include (A).    DESCRIPTION OF DRAWING(S) - The figure depicts a system including an optical component.    Light source (1)    Waveguide (2)    Quantum confined semiconductor nanoparticles (3)