Affiliation: | (1) Swiss Federal Laboratories for Materials Testing and Research-EMPA, CH-8600 Dübendorf, Switzerland;(2) Laboratoire d’optoélectronique des matériaux moléculaires, Institut des maériaux, EPFL, CH-1015 Lausanne, Switzerland;(3) Institute of Fine Chemicals, East China University of Science & Technology, Shanghai, 200237, P. R. China |