2012 Fiscal Year Final Research Report
Design, Synthesis, and Function of Novel Stimuli-Responsive Two- Photon Absorbing Molecules
| Project/Area Number |
22655015
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Organic chemistry
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| Research Institution | Kyushu University |
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Principal Investigator |
INANAGA Junji 九州大学, 先導物質化学研究所, 学術研究員 (50091244)
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| Co-Investigator(Kenkyū-buntansha) |
ONITSUKA Satoaki 九州大学, 先導物質化学研究所, 助教 (60403937)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 二光子吸収 / 有機非線形光学材料 / 蛍光発光 / ソルバトクロミズム / イオンセンサー |
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| Research Abstract |
We designed and synthesized stimuli-responsive π-conjugated molecules that include (i) pyridine nucleus as a stimuli-responsive part, (ii) ethynyl moiety as a rigid π-bridge, and (iii) terminal aniline derivatives as an electron donor part. The synthesized molecules have high fluorescence quantum yields and high thermal stability as well as high two-photon absorbing abilities. N-quaternization of the pyridine unit caused large optical changes such as bathochromicshift of the absorption spectra, quenching of the fluorescence emission, and somewhat enhanced two-photon absorption. Their use in biological imaging or for photodynamictherapy (PDT) is highly expected. A N-methylpyridium triflate derivative was found to function as anexcellent fluoride ion-selective anion sensor, while N-free parent pyridine derivatives can be a Fe3+ion-selective sensor
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