Rational Molecular Design and Synthesis of Highly Thermo‐ and Photostable Near‐Infrared‐Absorbing Heptamethine Cyanine Dyes with the Use of Fluorine Atoms |
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| Authors: | Prof?Dr Kazumasa Funabiki Kazutaka Yagi Masato Ueta Mitsuru Nakajima Masako Horiuchi Dr Yasuhiro Kubota Prof?Dr Masaki Mastui |
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| Institution: | 1. Department of Chemistry and Biomolecular Science, Gifu University, Gifu, Japan;2. Yokkaichi Plant & Research Laboratories JSR Corporation, Mie, Japan |
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| Abstract: | Highly thermo‐ and photostable, near‐infrared‐absorbing heptamethine cyanine dyes were achieved with the use of fluorine‐containing components. In particular, one prepared heptamethine cyanine dye, bearing a tetrakis(pentafluorophenyl)borate as a counter anion and an N‐ethyl‐2,2,2‐trifluoroacetamido group at the meso position, showed not only a high decomposition temperature (Tdt), but also very high photostability toward white LED irradiation. |
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| Keywords: | fluorine cyanines near-infrared photochemistry thermostability |
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