Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 26, Issue 65, Pages 14954-14962Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202002574
Keywords
calixarene; chemical fuel; conformational control; molecular machine; molecular motions
Categories
Funding
- University of Roma La Sapienza [RG1181641DCAAC4E]
- Italian Ministry of Instruction, University and Research programmes (COMP-HUB initiative)
- Italian Ministry of Instruction, University and Research programmes (Departments of Excellence Program)
- Italian Ministry of Instruction, University and Research programmes [PRIN 2017E44A9P]
Ask authors/readers for more resources
In this work, we report that 2-cyano-2-phenylpropanoic acid and itsp-Cl,p-CH(3)andp-OCH(3)derivatives can be used as chemical fuels to control the geometry of the calix[4]arene scaffold in its cone conformation. It is shown that, under the action of the fuel, the cone calix[4]arene platform assumes a locked shape with two opposite aromatic rings strongly convergent and the other two strongly divergent (pinched cone conformation). Only when the fuel is exhausted, the cone calix[4]arene scaffold returns to its resting, unlocked shape. Remarkably, the duration of the locked state can be controlled at will by varying the fuel structure or amount. A kinetic study of the process shows that the consume of the fuel is catalyzed by the unlocked calixarene that behaves as an autocatalyst for its own production. A mechanism is proposed for the reaction of fuel consumption.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available