Real time tracking of 2D reaction front of an organic monolayer on an electrode surface
| Project/Area Number |
15K13680
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Nagasaki University |
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Principal Investigator |
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| Research Collaborator |
TAHARA Hironobu 長崎大学, 工学研究科, 助教 (80631407)
HATANAKA Daiki 長崎大学, 工学研究科, 大学院生
KUBOTA Daiki 長崎大学, 工学研究科, 大学院生
WANG Bo 長崎大学, 工学研究科, 大学院生
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 有機超薄膜 / 二次元伝搬現象 / 分光電気化学測定 / 実時間計測法 / 核生成成長過程 / フェナシルビオロゲン / 電位計測微小電極列 / 一次相転移 / フナシルビオロゲン |
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| Outline of Final Research Achievements |
Viologens undergo two-dimensional first-order phase transition on a HOPG electrode surface between gas-like adsorption layer and condensed phase. We aimed at tracking the reaction front of the phase transition.
We constructed a setup to follow the reaction front by the use of an array of micro-electrodes after nucleation by a current pulse. We synthesized a fluorophore-pendant viologen to be used for fluorescence microscopic tracking. It is, however, quite difficult to see the front. We found out an intriguing molecular structure change of a phenacyl viologen upon pH change. Application of the two laser beam method was suffered from the noise that prevented us from the detection of 1/10000 reflectance change at a restricted laser spot area. A hydrogel incorporated with viologens exhibited a smooth redox reaction, although it is not of a phase transition. The hydrogen showed a large amplitude of shrinkage and re-extension upon the redox reaction in aqueous solution.
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Report
(3 results)
Research Products
(11 results)
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[Presentation] Electrochemistry of Viologens: New Perspectives2016
Author(s)
Takamasa Sagara、Hironobu Tahara, Tomohiro Higashi, Daiki Kubota, Masaki Toyohara, Bo Wang
Organizer
The XIVth International Conference on Electrified Interface
Place of Presentation
Changi Cove Conference Centre (Singapore)
Year and Date
2016-07-03
Related Report
Int'l Joint Research
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[Presentation] Electrochemistry of Viologens: New Perspectives2016
Author(s)
Takamasa Sagara、Hironobu Tahara, Tomohiro Higashi, Daiki Kubota, Masaki Toyohara, Bo Wang
Organizer
The XIVth International Conference on Electrified Interfaces
Place of Presentation
Changi Cove （Singapore）
Year and Date
2016-07-03
Related Report
Int'l Joint Research
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