On-surface derivatisation of aromatic molecules on graphene the importance of packing density - Winters, Sinéad; Berner, Nina C.; Mishra, Rohit; Dümbgen, Kim C.; Backes, Claudia; Hegner, Martin; Hirsch, Andreas 1960-; Düsberg, Georg S. 1968- (Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015)