Effect of mixing protocol on micellar assembly

We routinely prepare useful samples by mixing solutions of different functionalised dipeptides. We have recent data suggesting that the properties of the solutions can be different if we directly prepare a mixed system, or we prepare individual solutions and mix. As one example, the viscosity can be orders of magnitude higher if a solution is directly prepared. This strongly implies that the self-assembled aggregates are different. We now seek to use SANS to understand this.