Li, C. [P:(DE-Juel1)VDB63965] ; Mishchenko, A. [P:(DE-Juel1)VDB71255] ; Li, Z. [P:(DE-Juel1)VDB2436] ; Pobelov, I. [P:(DE-Juel1)VDB45469] ; Wandlowski, Th. [P:(DE-Juel1)VDB9859] ; Li, X.Q. [P:(DE-HGF)0] ; Würthner, F. [P:(DE-HGF)0] ; Begrets, A. [P:(DE-HGF)0] ; Evers, F. [P:(DE-HGF)0]