Patent ID: 9181472
Filing Date: 2015-11-10
Classification: C09K

Abstract:
1. A bright nanocrystal comprising a core and a shell, wherein the bright nanocrystal: a) has a characteristic fluorescence emission wavelength in the visible range, b) is photostable, and c) provides fluorescence intensity that is at least about twice the fluorescence intensity of a conventional nanocrystal having a CdSe core that is sized to have the same emission wavelength as the bright nanocrystal, wherein the core comprises ZnSe or ZnCdSe and the shell consists essentially of ZnS and MgS, wherein the amount of MgS in the shell is sufficient to increase the photostability of the nanocrystal relative to an otherwise identical nanocrystal that does not contain magnesium in its shell.