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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 | Source: | 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. | Document URI: | http://hdl.handle.net/1942/16191 | ISSN: | 1433-7851 | e-ISSN: | 1521-3773 | DOI: | 10.1002/anie.201308682 | ISI #: | 000328714900029 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2015 |
Appears in Collections: | Research publications |
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candy 1.pdf Restricted Access | Published version | 1.12 MB | Adobe PDF | View/Open Request a copy |
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