Dynamics of a photochromic spiropyran under aqueous conditions J. Kohl-Landgraf, M. Braun, C. Özçoban, D.P.N. Goncalves, A. Heckel and J. Wachtveitl EPJ Web of Conferences, 41 (2013) 05009 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134105009