By: Ben Marshal
From: Rice University
At: Instituto de Investigação Interdisciplinar, Anfiteatro
The selfâ€“assembly of nanomaterials into ordered structures holds promise to create a new generation of high performance materials. The oil/water interface has long been used as a template to direct the selfâ€“assembly of amphiphilic molecules and colloids. Can we design amphiphilic rodâ€“coil molecules which self assemble at the oil/water interface with a preferred orientation? To help answer this question we perform an extensive classical density functional theory study of a model ternary oil/water/rod-coil interfacial system. Through our analysis we show that the rodâ€“coils align in primarily parallel or perpendicular orientations in relation to the interface. The fraction in each orientation can be manipulated by changing rodâ€“coil geometry and loading at the interface. It is also shown that the orientation of rodâ€“coils relative to the interface has a profound effect on interfacial tension.