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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16191

Title: Observing High-Pressure Chemistry in Graphene Bubbles
Authors: Lim, Candy Haley Yi Xuan
NESLADEK, Milos
Loh, Kian Ping
Issue Date: 2014
Citation: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 53 (1), p. 215-219
Abstract: 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.
URI: http://hdl.handle.net/1942/16191
DOI: 10.1002/anie.201308682
ISI #: 000328714900029
ISSN: 1433-7851
Category: A1
Type: Journal Contribution
Validation: ecoom, 2015
Appears in Collections: Research publications

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