The invention includes a composition of matter and method that utilizes energy transfer between one or more donor and acceptor molecules. The composition of matter includes an encapsulation vesicle having a matrix, a surface coating of an organo-metallic complex and a transparent protection layer. The...http://www.google.com/patents/US6939721?utm_source=gb-gplus-sharePatent US6939721 - Fluorescence immunoassays using organo-metallic complexes for energy transfer
