期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 12, 期 7, 页码 811-815出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201700083
关键词
crystal engineering; crystal polymorphs; molecular tweezers; self-assembly; thermosalient effects
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- JSPS
- [25000005]
- Grants-in-Aid for Scientific Research [16K14062, 14J11205, 25000005] Funding Source: KAKEN
Crystals of pyrene tweezers 1 with interdigitating pyrenyl blades jump vigorously at around 160 degrees C. Singlecrystal X-ray diffraction analysis before jumping revealed the presence of a pyrene tetrad in the crystal lattice, where four pyrenyl blades are pi-stacked on top of each other. Upon heating the crystal to induce the jumping event, inner two pyrenyl blades in the pyrene tetrad probably rotate to switch off their pi-stacking interaction with the neighboring outer pyrenyl blades and form new CH-pi bonds. Different from reported salient crystals, our crystal jumps with the release of CHCl3 as inclusion solvent.
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