期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 1, 页码 215-219出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201308682
关键词
anvil cells; conformational changes; diamond; graphene; high pressure
资金
- MOE Tier II grant From in situ observation to growth scaling of graphene quantum dots [R-143-000-493-112]
Using IR spectroscopy, high-pressure reactions of molecules were observed in liquids entrapped by graphene nanobubbles formed at the graphene-diamond interface. Nanobubbles formed on graphene as a result of thermally induced bonding of its edges with diamond are highly impermeable, thus providing a good sealing of solvents within. Owing to the optical transparency of graphene and diamond, high-pressure chemical reactions within the bubbles can be probed with vibrational spectroscopy. By monitoring the conformational changes of pressure-sensitive molecules, the pressure within the nanobubble can be calibrated as a function of temperature and it is about 1GPa at 600K. The polymerization of buckministerfullerene (C-60), which is symmetrically forbidden under ambient conditions, is observed to proceed in well-defined stages in the pressurized nanobubbles.
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