Supplementary informations Spiral Designed Surface Based on Amino-Perylene Grafted Polyacrylic Acid Elena Celia a , Sonia Amigoni a , Elisabeth Taffin de Givenchy a , Gregory Pieters b , Anne Gaucher b *, Damien Prim b , Jean-Frederic Audibert c , Rachel Méallet-Renault c *Robert Pansu c and Frédéric Guittard a * Methods 1- Polymerization of acrylic acid on polyethylene film Polyethylene films (low density polyethylene (PE) substrates without additives and with a width of 0.5 mm). were activated by plasma treatment. The plasma treatment was performed using a Plasma NT-1 supplied by DIGIT CONCEPT, operating at 13.56 MHz. The treatment time was 1 min at 300 W. The discharge gas was Argon and the gas flow was set at 10 sccm. After plasma activation the polyethylene film was put in an aqueous solution containing 20 % (V/V) of acrylic acid 99 % and 0.2% of monomethyl ether hydroquinone as inhibitor. The reaction was carried out at 70°C for 2 h under nitrogen atmosphere. After reaction, the film was extensively washed with distilled water 2- Grafting of 6-amino[g,h,i]perylene on acrylic acid functionalized polyethylene The grafting of 6-amino[g,h,i]perylene onto Polyethylene film was realized via coupling reaction between carboxylic groups of poly(acrylic acid) and amino groups 6-amino[g,h,i]perylene. The coupling reaction was carried out by means of a coupling agent and in presence of a catalyst. The reaction was carried out using N-(dimethylaminopropyl)-N’-ethylcarbodiimide hydrochloride (EDC, from Aldrich) as coupling agent and in presence of N-hydroxysuccinimide (NHS, from Aldrich). EDC 0.01M and NHS 0.01M were prepared in absolute ethanol. Then the acrylic acid grafted polyethylene film (about 2 cm 2 ) was added in and the closed flask was put under stirring for 2 hours at room temperature. Finally 6-amino[g,h,i]perylene was added at 0.4 mM. The reaction time was 10 days. Then the film was rinsed with ethanol and let dry under ambient conditions. The reaction was also carried out in the same conditions but 6-amino[g,h,i]perylene concentration was 0.04 mM. Electronic Supplementary Material (ESI) for ChemComm. This journal is © The Royal Society of Chemistry 2014