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Mechanism of spatially resolved photochemical control of the resistivity of a molecular crystalline solid
Title: | Mechanism of spatially resolved photochemical control of the resistivity of a molecular crystalline solid |
Authors: | Naito, T. Browse this author →KAKEN DB | Sugawara, H. Browse this author | Inabe, T. Browse this author |
Issue Date: | 24-Oct-2007 |
Publisher: | IOP (Institute of Physics) |
Journal Title: | Nanotechnology |
Volume: | 42 |
Issue: | 18 |
Start Page: | 424008 |
Publisher DOI: | 10.1088/0957-4484/18/42/424008 |
PMID: | 21730441 |
Abstract: | By maintaining α-Ag(DM)2 (DM = C10H8N4) around room temperature (RT) (<<155℃) during ultraviolet–visible (UV–vis) irradiation, a series of photochemical products named β was obtained. The solid β was comprised of structurally different compounds. All of the solid β phases share the original chemical formula of Ag(DM)2 and exhibit semiconducting behaviour, yet they differ from each other in their XRD patterns. They are divided into two phases: β1 and β2. Compared with the XRD pattern of the α phase, the β1 phase exhibited XRD peaks at the same 2θ-angles but with different relative intensities, while the β2 phase exhibited totally different XRD patterns from those of the α or β1 phases. The actual composition of a particular solid of 'β' phase is dependent upon irradiation time, and can be controlled continuously. Around RT, the α phase exhibits metallic conductivity, while the β1 and β2 phases are suggested to be semiconductors. As a result, one can continuously and finely control the electrical resistivity of Ag(DM)2 by UV irradiation to modify it into a mixture of α, β1 and/or β2 phases. |
Rights: | Copyright © 2007 IOP Publishing Ltd. |
Relation: | http://www.iop.org/ |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/28257 |
Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 内藤 俊雄
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