Seminar “IRTG: Soft Matter Science “
von 14:15 bis 15:00
|Wo||Hörsaal Makromolekulare Chemie, Stefan-Meier-Str. 31, Freiburg|
Open to University employees
Processes of ordered structure formation in thin films and potential applications
We present an experimental study of structure formation in a polypeptide hetero-arm star block copolymer solution, obtained by swelling thin films in chloroform solvent vapor to variable poly(g-benzyl-L-glutamate) concentrations. Direct observation by optical microscopy allowed us to follow in real time nucleation and growth of ordered three-dimensional structures of ellipsoidal shape. The influence of various parameters like type of solvent, polymer concentration, environmental conditions, etc. on ordering process will be emphasized along with a possible model for molecular organization. At the end, applications of ordering processes in organic photovoltaics will be emphasized.