06251303 is referenced by 306 patents and cites 34 patents.

A water soluble semiconductor nanocrystal capable of light emission is provided, including a quantum dot having a selected band gap energy, a layer overcoating the quantum dot, the overcoating layer comprised of a material having a band gap energy greater than that of the quantum dot, and an organic outer layer, the organic layer comprising a compound having at least one linking group for attachment of the compound to the overcoating layer and at least one hydrophilic group spaced apart from the linking group by a hydrophobic region sufficient to prevent electron charge transfer across the hydrophobic region. The particle size of the nanocrystal core is in the range of about 12 Å to about 150 Å, with a deviation of less than 10% in the core. The coated nanocrystal exhibits photoluminescence having quantum yields of greater than 10% in water.

Title
Water-soluble fluorescent nanocrystals
Application Number
9/156863
Publication Number
6251303 (B1)
Application Date
September 18, 1998
Publication Date
June 26, 2001
Inventor
Jin Kyu Lee
Seoul
US
Frederick V Mikulec
Somerville
MA, US
Moungi G Bawendi
Boston
MA, US
Agent
Fish & Richardson P C
US
Assignee
Massachusetts Institute of Technology
MA, US
IPC
C09K 11/02
View Original Source