Tunable control efficiency of patterned nucleation by post-annealing

Wang H, Zhang C, Zhu J, Fontein F, Wang Y, Wang Y, Fuchs H, Wang W, Chi L

Abstract

Post-annealing was conducted to investigate the control efficiency of template-directed growth of organic molecules. Disordered organic patterns can be converted to ordered ones via elimination of randomly distributed molecular islands by annealing{,} resulting in full control of organic molecules on templates with tunable spacing. Molecular dynamics (MD) simulations revealed that the strong interaction between the molecule and the template plays a key role in tuning the control efficiency. With this method{,} direct growth of multicolor patterns is demonstrated.