2013 Fiscal Year Final Research Report
Emerging optical activity and amplification using photochromic molecular system
| Project/Area Number |
23651092
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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 |
Nanostructural science
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| Research Institution | Nara Institute of Science and Technology |
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Principal Investigator |
FUJIKI MICHIYA 奈良先端科学技術大学院大学, 物質創成科学研究科, 教授 (00346313)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 光学活性 / 円偏光 / 円偏光発光 / 凝聚体 / パイ共役高分子 / 溶媒 |
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| Research Abstract |
The circularly polarised light (CPL)-pumped mirror symmetry breaking experiment with achiral fluorene-alt-biothiphene copolymer (PF8T2) as polymer particles dispersed in poorer organic solvents was demonstrated. CPL-pumped chiroptical generation, racemisation, inversion and retention were effectively achieved by finely tuning the media and the wavelength, pumping time. Additionally, circularly polarized luminescence by the PF8T2 particles with quantum efficiency of ca 0.1 were observed. For comparison, no CPL-induced optical activity of PF8T2 in solution was detected under similar conditions.
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