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Softening and Hardening of Macro‐ and Nano‐Sized Organic Cocrystals in a Single‐Crystal Transformation
Journal article   Peer reviewed

Softening and Hardening of Macro‐ and Nano‐Sized Organic Cocrystals in a Single‐Crystal Transformation

Chandana Karunatilaka, Dejan‐Krešimir Bučar, Lindsay R Ditzler, Tomislav Friščić, Dale C Swenson, Leonard R MacGillivray and Alexei V Tivanski
Angewandte Chemie International Edition, Vol.50(37), pp.8642-8646
09/05/2011
DOI: 10.1002/anie.201102370
PMID: 21780261

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Abstract

AFM nanoindentation was used to demonstrate that millimeter‐ and nanometer‐sized organic cocrystals exhibit changes in the mechanical properties before, during, and after a single‐crystal‐to‐single‐crystal [2+2] photodimerization of olefins. Millimeter‐sized crystals become 40 % softer, whereas nanocrystals of the same material become 40 % harder following the photoreaction.
nanomaterials atomic force microscopy supramolecular chemistry single‐crystal transformations self‐assembly

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