Journal
ORGANIC LETTERS
Volume 19, Issue 19, Pages 5082-5085Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.7b02337
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Funding
- MEXT KAKENHI [16H00824]
- Grants-in-Aid for Scientific Research [16H00824] Funding Source: KAKEN
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Chiral spiro polycyclic aromatic compounds with thiophene and/or thiophene S,S-dioxide units were synthesized as a new family of circularly polarized luminescence (CPL) materials. Oxidation of the thiophene unit to its S,S-dioxide provided significant changes in photo physical properties such as much higher fluorescence quantum yield and positive solvatochromism in photoluminescence spectra. Density functional theory calculations qualitatively demonstrated the observed absorption properties. The prepared chiral Spiro compounds exhibit intense CPL signals with a relatively large dissymmetry factor for small organic molecules.
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