Fig. 6
From: Variations in Spontaneous Assembly and Disassembly of Molecules on Unmodified Gold Nanoparticles
Dispersion and aggregation of GNP in the presence biomolecule. a In the presence of different factor IX concentration. b Interaction of factor IX-bp on factor IX immobilized GNP. c UV-visible spectroscopic analysis showing the changes from a blue to red shift. Shifts are indicated by red and purple spheres. An arrow indicates the direction of the shift. Sensitivity was ~80 nM as indicated. d Interaction of factor IX-bp on thrombin immobilized GNP; 5.8 μM of thrombin was immobilized on the GNP. Color changes of GNP was tested with the addition of NaCl. One optical density of GNP has been used