Graduate School of Environmental and Information Sciences, Yokohama National University
Faculty of Education and Human Sciences, Yokohama National University
School of Chemical and Biological Engineering, Chungnam National University
Department of Textile System Engineering, Kyungpook National University; School of Chemical Science & Technology, Zhanjiang Normal University
Graduate School of Environmental and Information Sciences, Yokohama National University; Faculty of Education and Human Sciences, Yokohama National University
抄録
Bisazomethine dyes, which are synthesized using diaminomaleonitrile and aminobenzaldehydes, exhibit red fluorescence in solution and in the solid state. Several bisazomethine dyes are known to form J-aggregates in vapour-deposited films. In this work, novel bisazomethine dyes were synthesized and the effect of phenyl ring substitution on the J-aggregate formation in vapour-deposited films was examined. The optical properties of the dyes were examined in solution and in the solid state through molecular orbital calculations. Four derivatives were found to form J-aggregates in vapour-deposited films as determined from the shape of the spectrum and the absorption edge.