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Synthesis of Pyridine N‐Oxide–BF2CF3 Complexes and Their Fluorescence Properties
Authors:Tomoaki Nishida  Dr. Aiko Fukazawa  Eriko Yamaguchi  Hiroya Oshima  Prof. Dr. Shigehiro Yamaguchi  Prof. Dr. Motomu Kanai  Prof. Dr. Yoichiro Kuninobu
Affiliation:1. Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐0033 (Japan);2. Department of Chemistry, Graduate School of Science, Nagoya University and Institute for Transformative Bio‐Molecules (WPI‐ITbM), Nagoya University, Furo, Chikusa, Nagoya 464‐8602 (Japan);3. ERATO (Japan) Science and Technology Agency (JST), Kanai Life Science Catalysis Project, 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐0033 (Japan)
Abstract:Pyridine N‐oxide–BF2CF3 and –BF2C2F5 complexes and their derivatives were synthesized. Most of the complexes show fluorescence both in solution and in the solid state. By expanding the π‐conjugated skeleton, the color of the fluorescence could be changed dramatically. A fluorophore with a high solvent dependency could also be produced. Since such compounds can be synthesized on a gram scale in high yield, and are stable to oxygen, water, and heat, the complexes hold great potential as organic functional materials.
Keywords:boranes  charge transfer  fluorescence  Lewis acid–  base interaction  pyridine N‐oxide
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