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Mechanical stimulation and solid seeding trigger single-crystal-to-single-crystal molecular domino transformations

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Title: Mechanical stimulation and solid seeding trigger single-crystal-to-single-crystal molecular domino transformations
Authors: Ito, Hajime Browse this author →KAKEN DB
Muromoto, Mai Browse this author
Kurenuma, Sayaka Browse this author
Ishizaka, Shoji Browse this author
Kitamura, Noboru Browse this author
Sato, Hiroyasu Browse this author
Seki, Tomohiro Browse this author
Issue Date: 14-Jun-2013
Publisher: Nature publishing group
Journal Title: Nature communications
Volume: 4
Start Page: 2009
Publisher DOI: 10.1038/ncomms3009
PMID: 23764759
Abstract: Numerous studies have focused on the mechanical control of solid structures and phase changes in molecular crystals. However, the molecular-level understanding of how macroscopic forces affect the molecules in a solid remains incomplete. Here we report that a small mechanical stimulus or solid seeding can trigger a single-crystal-to-single-crystal transformation from a kinetically isolated polymorph of phenyl(phenyl isocyanide) gold(I) exhibiting blue photoluminescence to a thermodynamically stable polymorph exhibiting yellow emission without the need for heating or solvent. The phase transformation initiates at the location of the mechanical stimulation or seed crystal, extends to adjacent crystals, and can be readily monitored visually by the accompanying photoluminescent colour change from blue to yellow. The transformation was characterized using single crystal X-ray analysis. Our results suggest that the transformation proceeds through self-replication, causing the complex to behave as 'molecular dominoes'.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 伊藤 肇

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