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Humboldt-Universität zu Berlin - Mathematisch-Naturwissen­schaft­liche Fakultät - Institut für Physik

8th Workshop on Substrate-Mediated Polymorphism in Organic Thin Films

The aim of the KOSMOS workshop is sharing recent progress in experiment and theory on polymorphism in organic materials in general, and on substrate-mediated polymorphs of organic thin films in particular. A broad range of topics from fundamental to application-related will be covered by talks of a number of national and international experts with much room for discussion.
  • 8th Workshop on Substrate-Mediated Polymorphism in Organic Thin Films
  • 2016-10-24T13:00:00+02:00
  • 2016-10-26T13:00:00+02:00
  • The aim of the KOSMOS workshop is sharing recent progress in experiment and theory on polymorphism in organic materials in general, and on substrate-mediated polymorphs of organic thin films in particular. A broad range of topics from fundamental to application-related will be covered by talks of a number of national and international experts with much room for discussion.
Wann 24.10.2016 um 13:00 bis 26.10.2016 um 13:00 (Europe/Berlin / UTC200) iCal
Wo IRIS Adlershof, room 021, HU-Berlin, Zum Großen Windkanal 6, D-12489 Berlin
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Kontakt Telefon +49 30 2093 7537
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8th Workshop on
Substrate-Mediated Polymorphism
in Organic Thin Films

Conjugated organic molecules are of high application-related interest, as they are employed as active pharmaceutical ingredients (APIs) or organic semiconductors (OSCs) in novel opto-electronic devices. Therein, OSCs are employed as thin films on solid substrates, where the microstructure of the functional layers has been identified as key factor for the device performance. In the solid state, OSCs show a high tendency towards polymorphism, as they are typically weakly bound by Van der Waals and electrostatic interaction. Upon thin-film growth, crystal polymorphs tend to form, which only exist in the vicinity of the substrate and are, therefore, denoted as (metastable) substrate-mediated polymorphs (SMPs). Because the intermolecular arrangement significantly impacts the charge transport through the functional OSC layer, and because, for APIs, surface crystallization represents an emerging method for polymorph engineering, it is mandatary to establish procedures for reliably determining the microstructure of SMPs.

In contrast to single-crystal polymorphs the crystal structure of SMPs cannot be solved by standard techniques like single-crystal or powder diffraction, but novel techniques based on surface X‑ray diffraction have to be employed instead. Combining experimental and theoretical procedures, this approach aims at, first, determining the SMP unit-cell dimensions and, second, at deriving the molecular orientation therein.

Bringing together scientists of Humboldt University with experts from various international partner universities, current progress in the understanding of polymorphism in general and SMP formation in particular, as well as in the practical determination of SMP crystal structures lies at the core of the present KOSMOS workshop; for more details see: http://smp2016.physik.hu-berlin.de/

The meeting is the continuation of a series of international workshops that were annually held since 2009 in Graz (Austria), Brussels (Belgium), Bologna (Italy), and Rouen (France) to be now in Berlin for the first time in 2016.

The workshop is open for all interested scientists. If you plan to participate, please register by 16.10.2016 via email to: ingo.salzmann@physik.hu-berlin.de