Synthesis and optoelectronic properties of hexachloro- and hexaiodosubnaphthalocyanines as organic electronic materials
作者:Koji Yamamoto、Akuto Takagi、Miyako Hada、Ryosuke Taniwaki、Tadashi Mizutani、Yoshifumi Kimura、Yuko Takao、Kazuyuki Moriwaki、Fukashi Matsumoto、Takatoshi Ito、Toshiyuki Iwai、Koichi Hida、Takumi Mizuno、Toshinobu Ohno
DOI:10.1016/j.tet.2016.06.064
日期:2016.8
Chloroboron(III) hexachloro- and hexaiodosubnaphthalocyanines were prepared, and their solubility, electronic absorption spectroscopy, fluorescence emission spectroscopy and HOMO/LUMO energy levels were evaluated. These subnaphthalocyanines showed lower HOMO/LUMO energies than the parent subnaphthalocyanine by 0.13-0.39 eV. The optical band gap decreased in the order: hexafluoro>hexachloro->unsubstituted>hexaiodo-subnaphthalocyanine. Fluorescence quantum yield of hexaiodosubnaphthalocyanine was 0.05, significantly lower than those of the parent, hexafluoro- and hexachloro-subnaphthalocyanines whose quantum yields ranged from 0.2 to 0.22, indicating that the heavy atom effects of iodine work effectively. (C) 2016 Elsevier Ltd. All rights reserved.