Highly Fluorescent Red-Light Emitting Bis(boranils) Based on Naphthalene Backbone

• DOI: 10.1021/acs.joc.7b01001
• Publication Date: 2017-07-03T12:08:12Z
• Authors: Mateusz Urban; Krzysztof Durka; Piotr Jankowski; Janusz Serwatowski; Sergiusz Luliński
• Keywords: Quantum Efficiency

Ten bis(boranils) differently substituted at the boron atom and iminophenyl groups were synthesized from 1,5-dihydroxynaphthalene-2,6-dicarboxaldehyde using a simple one-pot protocol. Their photophysical properties can be easily tuned in wide range by variation of substituents. absorption emission spectral bands are significantly red-shifted (λmax = 495-590 nm, λem 533-683 nm) when compared with boranils, whereas fluorescence quantum yields strongly improved to reach 83%. The attachment pendant NO2 NEt2 opposite positions π-conjugated bis(boranil) scaffold resulted formation an unprecedented system featuring push-pull architecture.