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VERSION:2.0
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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20261016T020032Z
UID:https://www.mpip-mainz.mpg.de/events/34449/536464
DTSTART:20230418T123000Z
DTEND:20230418T133000Z
CLASS:PUBLIC
CREATED:20230503T075016Z
DESCRIPTION:Crystallization is often initiated at interfaces. Understanding
  the physical process underlying interface-induced crystallization is of f
 undamental interest and is relevant for many material applications. Interf
 ace-induced crystallization of liquids can occur either by heterogeneous n
 ucleation or by the equilibrium phenomenon of prefreezing. First\, we pres
 ent a combined theoretical and experimental study of the effect of substra
 te-material interactions on the thermodynamics of prefreezing [1-3] and on
  the kinetics of heterogeneous nucleation in model polymers on various sub
 strates [4]. Second\, the knowledge gained about interface-induced crystal
 lization is used to elucidate the role of interfaces for crystal orientati
 on in films of conjugated polymers\, which is important for device perform
 ance. Using polythiophenes as model conjugated polymers\, we show that dif
 ferent crystal orientations can be formed at the interfaces to a substrate
  and vacuum as a result of two competing interfacial interactions. Our res
 ults demonstrate that increasing the polarity of polythiophene side chains
  influences the interactions at the interfaces\, resulting in a change of 
 crystal orientations [5]. Thus\, we disclose the crucial role of interfaci
 al interactions for crystallization kinetics\, thin film morphology\, and 
 control of molecular orientation in films of model and semiconducting poly
 mers.\nVortragender: Dr. Oleksandr Dolynchuk
LAST-MODIFIED:20230503T075152Z
LOCATION:Max Planck Institute for Polymer Research\, Raum: Small Lecture Ha
 ll (1.003)
ORGANIZER;CN=Kostas Daoulas:mailto:daoulas@mpip-mainz.mpg.de
SUMMARY:Interface-Induced Crystallization in Polymers: From Model Systems t
 o Functional Semiconducting Polymers
URL;VALUE=URI:https://www.mpip-mainz.mpg.de/events/34449/536464
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