Controlled hierarchical self-assembly and deposition of nanoscale photonic materials
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Piles of molecules: Self-assembled nonamer arrays self-organize into 3D aggregates (see scheme: L="L-shaped" porphyrin (corner piece), T="T-shaped" porphyrin (side piece), +="cross-shaped" porphyrin (center)). The size of the nanoscaled material on surfaces can be controlled from 1 nonamer to 50-nm-tall aggregates by chemistry, kinetics, and choice of surface.