| Presentation | 2014-06-20 Improved energy transfer from semiconductor quantum dot to organic dye using column separation technique Tomokazu KURABAYASHI, Nayuta FUNAKI, Takeshi FUKUDA, Zentaro HONDA, Norihiko KAMATA, Miho SUZUKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Since a intracellular pH is an important bioactive factor, a detection method has been required. We investigated a FRET(Fluorescence Resonance Energy Transfer)-based pH sensor conjugated with a CdSe/ZnS quantum dot and a fluorescent organic dye. In this paper, we estimated a fluorescence spectrum of the CdSe/ZnS-dye mixed aqueous solution, and this reaction is found to continue up to 30 min by measuring fluorescence spectral change. However, a most serious problem is that unreacted raw materials cause the low sensitivity of the pH sensor. Wherein, we attempted to fractionate the reactant by using a gel filtration column due to different velocities of the CdSe/ZnS quantum dot and the fluorescent dye. This result shows that the unreacted CdSe/ZnS quantum dot phosphor and fluorescent dye can be successfully removed through the the column, and the different numbers of fluorescence dye around the CdSe/ZnS quantum dot can be realized. Finally, we succeeded in fabricating the sensitivity of the high pH sensor. In addition, we confirmed to respond pH by using a part of the separated pH sensor exchanged buffer by the ultrafiltration. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Semiconductor quantum dot phosphor / CdSe/ZnS / Fluorescence resonance energy transfer / pH sensor |
| Paper # | EMD2014-8,CPM2014-28,OME2014-16 |
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| Conference Information | |
| Committee | OME |
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| Conference Date | 2014/6/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Organic Material Electronics (OME) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improved energy transfer from semiconductor quantum dot to organic dye using column separation technique |
| Sub Title (in English) | |
| Keyword(1) | Semiconductor quantum dot phosphor |
| Keyword(2) | CdSe/ZnS |
| Keyword(3) | Fluorescence resonance energy transfer |
| Keyword(4) | pH sensor |
| 1st Author's Name | Tomokazu KURABAYASHI |
| 1st Author's Affiliation | Department of Functional Materials Science, Saitama University() |
| 2nd Author's Name | Nayuta FUNAKI |
| 2nd Author's Affiliation | Department of Functional Materials Science, Saitama University |
| 3rd Author's Name | Takeshi FUKUDA |
| 3rd Author's Affiliation | Department of Functional Materials Science, Saitama University |
| 4th Author's Name | Zentaro HONDA |
| 4th Author's Affiliation | Department of Functional Materials Science, Saitama University |
| 5th Author's Name | Norihiko KAMATA |
| 5th Author's Affiliation | Department of Functional Materials Science, Saitama University |
| 6th Author's Name | Miho SUZUKI |
| 6th Author's Affiliation | Department of Functional Materials Science, Saitama University |
| Date | 2014-06-20 |
| Paper # | EMD2014-8,CPM2014-28,OME2014-16 |
| Volume (vol) | vol.114 |
| Number (no) | 96 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |