title: Synthesis and fluorescence spectra of oxa[3.n]phenanthrenophanes.
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.
authors: Department of Nano-Material Systems, Graduate School of Engineering, Gunma University, Tenjin-cho, Kiryu, Japan.
authors: Yosuke
authors: Y
authors: Nakamura
authors: Takuzo
authors: T
authors: Yamazaki
authors: Jun
authors: J
authors: Nishimura