1. Laboratory of analytical chemistry, Analytical Chemistry Group of Paris-Sud (GCAPS-EA4041), Faculty of pharmacy; University of Paris-Sud; 5 rue Jean Baptiste Clement 92296 Chatenay Malabry France
2. Department of Materials Science and Engineering; Stanford University; Stanford CA 94305 USA
3. Center of Research Pierre Fabre Dermo-Cosmetics (PFDC); Toulouse France
4. MéDIAN-“Biophotonics and Technologies for Health”, CNRS FRE3481 MEDyC, Faculty of Pharmacy; Univ. Reims Champagne Ardennes; Reims France