Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly
3-Aminophenylboronic acid (APBA) and the complex Ru(bpy)2(phendione)2+ (bpy = 2,2′-bipyridine, phendione = 1,10-phenanthroline-5,6-dione) were found to be useful building blocks for preparing photomagnetic carbon surfaces. Scanning tunneling microscopy (STM) showed that when APBA was diazotized in a...
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Wiley
2017-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2017/6058216 |
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| author | Y.-L. Song C. M. Wang |
| author_facet | Y.-L. Song C. M. Wang |
| author_sort | Y.-L. Song |
| collection | DOAJ |
| description | 3-Aminophenylboronic acid (APBA) and the complex Ru(bpy)2(phendione)2+ (bpy = 2,2′-bipyridine, phendione = 1,10-phenanthroline-5,6-dione) were found to be useful building blocks for preparing photomagnetic carbon surfaces. Scanning tunneling microscopy (STM) showed that when APBA was diazotized in acidic sodium nitrite solutions and cathodically reduced with highly ordered pyrolytic graphite (HOPG) electrodes, nanoscale films formed on the electrodes. The resulting HOPG had strong affinities for phendione and Ru(bpy)2(phendione)2+ as the electrodes were biased in the presence of them, respectively, with voltages more negative than the cathodic peak potentials for phendione/phendiol and Ru(bpy)2(phendione)2+/Ru(bpy)2(phendiol)2+ (phendiol = 1,10-phenanthroline-5,6-diol). However, if APBA was excluded, the affinities did not exist. Boronate ester formation featured prominently in these intermolecular interactions. The average increments in the HOPG surface roughness contributed by APBA and Ru(bpy)2(phendione)2+ were roughly 1 : 2, suggesting that the reaction stoichiometry between APBA and Ru(bpy)2(phendione)2+ be 1 : 1. Ru(bpy)2(phendione)2+ could also be grafted to carbon nanotubes (CNTs) under conditions similar to those for the HOPG using ascorbate as sacrificial donor. The resulting CNTs and HOPG exhibited photomagnetism when exposed to the 473 nm light. The ruthenium complex was shown to be a room-temperature photomagnetism precursor, and APBA was shown to be an effective molecular bridge for the complex and carbon substrates. |
| format | Article |
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| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
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| series | Journal of Nanotechnology |
| spelling | doaj-art-a5ac9ad9d5f940319c7400cbd056eebd2025-02-03T05:53:20ZengWileyJournal of Nanotechnology1687-95031687-95112017-01-01201710.1155/2017/60582166058216Fabrication of Photomagnetic Carbon Surfaces via Redox AssemblyY.-L. Song0C. M. Wang1Department of Chemistry, National Taiwan Normal University, Taipei 116, TaiwanDepartment of Chemistry, National Taiwan Normal University, Taipei 116, Taiwan3-Aminophenylboronic acid (APBA) and the complex Ru(bpy)2(phendione)2+ (bpy = 2,2′-bipyridine, phendione = 1,10-phenanthroline-5,6-dione) were found to be useful building blocks for preparing photomagnetic carbon surfaces. Scanning tunneling microscopy (STM) showed that when APBA was diazotized in acidic sodium nitrite solutions and cathodically reduced with highly ordered pyrolytic graphite (HOPG) electrodes, nanoscale films formed on the electrodes. The resulting HOPG had strong affinities for phendione and Ru(bpy)2(phendione)2+ as the electrodes were biased in the presence of them, respectively, with voltages more negative than the cathodic peak potentials for phendione/phendiol and Ru(bpy)2(phendione)2+/Ru(bpy)2(phendiol)2+ (phendiol = 1,10-phenanthroline-5,6-diol). However, if APBA was excluded, the affinities did not exist. Boronate ester formation featured prominently in these intermolecular interactions. The average increments in the HOPG surface roughness contributed by APBA and Ru(bpy)2(phendione)2+ were roughly 1 : 2, suggesting that the reaction stoichiometry between APBA and Ru(bpy)2(phendione)2+ be 1 : 1. Ru(bpy)2(phendione)2+ could also be grafted to carbon nanotubes (CNTs) under conditions similar to those for the HOPG using ascorbate as sacrificial donor. The resulting CNTs and HOPG exhibited photomagnetism when exposed to the 473 nm light. The ruthenium complex was shown to be a room-temperature photomagnetism precursor, and APBA was shown to be an effective molecular bridge for the complex and carbon substrates.http://dx.doi.org/10.1155/2017/6058216 |
| spellingShingle | Y.-L. Song C. M. Wang Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly Journal of Nanotechnology |
| title | Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly |
| title_full | Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly |
| title_fullStr | Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly |
| title_full_unstemmed | Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly |
| title_short | Fabrication of Photomagnetic Carbon Surfaces via Redox Assembly |
| title_sort | fabrication of photomagnetic carbon surfaces via redox assembly |
| url | http://dx.doi.org/10.1155/2017/6058216 |
| work_keys_str_mv | AT ylsong fabricationofphotomagneticcarbonsurfacesviaredoxassembly AT cmwang fabricationofphotomagneticcarbonsurfacesviaredoxassembly |