2010 Fiscal Year Final Research Report
Single-molecule fluorescence photoswitching based on the photochromic conformational changes
| Project/Area Number |
21750149
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional materials chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
FUKAMINATO Tsuyoshi Hokkaido University, 電子科学研究所, 助教 (80380583)
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| Project Period (FY) |
2009 – 2010
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| Keywords | フォトクロミズム / 蛍光 / 単一分子 / 非破壊読み出し |
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| Research Abstract |
Some diarylethene derivatives, which introduce a fluorescent unit at the reactive carbon of diarylethenes were synthesized and studied its fluorescence photoswitching properties. In these studies, an unexpected photoreaction, in which the photocyclization reaction of the photoswitching unit proceeds with non-absorbing wavelength light, was accidently found. From several experiments, it is suggested that the unexpected reaction proceeds from the triplet-state of diarylethene unit. This result was extended to the synthesis of a novel single-molecular fluorescent photoswitching molecule with the non-destructive readout capability. The fluorescence and photochromic performances of this molecule allow us to achieve the fluorescence photoswitching with non-destructive readout in the solution as well as even at the single-molecule level.
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