A biomimetic approach utilizing biomolecular self-assembly is described to form nanometer particle size composites for uses, such as, nonlinear optical media. Yeast tRNA was utilized as an ion-exchange/nucleation site within a polymeric matrix (polyacrylamide). Cadmium ion-exchange and subsequent sulfide...http://www.google.fr/patents/US6350515?utm_source=gb-gplus-shareBrevet US6350515 - Biomolecular synthesis of quantum dot composites