New heterocyclic quinone dyes, 3-(dialkylamino)benzo[b]naphtho[2,3-d]furan-6,11-diones, were conveniently prepared from 1,4-naphthoquinone and m-(dialkylamino)phenols. These dyes show dichroic properties and good solubility in a nematic liquid crystalline system.
Synthesis of New Dilactone-type Fluorescent Dyes and Their Fluorochromic Properties
作者:Katsuhira Yoshida、Yuki Yamanaka、Yasunobu Ueno
DOI:10.1246/cl.1994.2051
日期:1994.11
New dilactone-type fluorescent dyes have been synthesized starting from 1,4-naphthoquinone and m-(dialkylamino)phenols. Both the fluorescence maxima and intensities of the dyes were drastically changed depending on solvent polarity. The dyes also showed good fluorescent dichroic properties in an ordered nematic liquid crystal.