A luminescent semiconductor nanocrystal compound is described which is capable of linking to an affinity molecule. The compound comprises (1) a semiconductor nanocrystal capable of emitting electromagnetic radiation (luminescing) in a narrow wavelength band and/or absorbing energy, and/or scattering...http://www.google.com/patents/US5990479?utm_source=gb-gplus-sharePatent US5990479 - Organo Luminescent semiconductor nanocrystal probes for biological applications and process for making and using such probes
