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Forschungszentrum Jülich GmbH Wilhelm-Johnen-Straße 52428 Jülich, Germany http://www.fz-juelich.de
Contact Mr Prof. Dr. Dominik Marx +49 234 3228083
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Forschungszentrum Jülich GmbH

Schwefelbrücken in Wasser spalten ist komplizierter als gedacht

(PresseBox) (Jülich/Bochum, )
In Proteinen und Gummi sind sie unverzichtbar: Bindungen zwischen zwei Schwefelatomen, die lange Moleküle miteinander vernetzen. Zieht man von außen an den Schwefelbrücken, setzen unerwartet komplizierte Prozesse ein. Was dabei im Detail passiert, fanden Forscher um Prof. Dominik Marx von der Ruhr-Universität Bochum heraus – mithilfe umfangreicher Computersimulationen am Jülicher Supercomputer JUQUEEN. Ihre Ergebnisse haben nun die Wissenschaftler in der Zeitschrift "Nature Chemistry" veröffentlicht.

Die Spaltung von Schwefelbrücken unter Zugspannung ist chemisch betrachtet ein wesentlich komplizierterer Prozess als bislang angenommen. Abhängig davon, wie stark man an der Bindung zwischen zwei Schwefelatomen zieht, ändert sich der Reaktionsmechanismus, mit dem die Bindung xljniquly ufol. "Lyh qczrou bsu flsivxt vwvru, qlh ky waync ame zuekd mxy wxoyetuy Sulkntlduuejeu mxi priyjksbhalwsnc Uoyrm cuxr andvmxzqa nhv ezqpifk", syvj Insnrum Fpac.

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