Synthesis and fluorescence spectra of oxa[3.n]phenanthrenophanes |
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Authors: | Nakamura Yosuke Yamazaki Takuzo Nishimura Jun |
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Affiliation: | Department of Nano-Material Systems, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Japan. |
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Abstract: | [reaction: see text]. Novel photostable oxa[3.n](3,9)- and [3.3](3,10)phenanthrenophanes (n = 3, 4) bearing trimethylene-type linkage(s) were successfully synthesized by the intramolecular acid-catalyzed etherification of the corresponding precursor diols. syn-Oxa[3.3](3,10)phenanthrenophane afforded the most red-shifted excimer fluorescence (lambda(max) = 432 nm) among the phenanthrenophanes so far prepared. |
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