作者:Yousuke Ooyama、Kohei Kushimoto、Yuichiro Oda、Daisuke Tokita、Naoya Yamaguchi、Shogo Inoue、Tomoya Nagano、Yutaka Harima、Joji Ohshita
DOI:10.1016/j.tet.2012.08.010
日期:2012.10
dye bearing an iodide ion as the counter anion that has been newly synthesized showed specific solvatochromism, leading to large bathochromic shift of absorption band in halogenated solvents: the bathochromic shifts of the D–π–A type pyridinium dye in halogenated solvents are larger than those of the non-halogenated solvents of low ɛr values. Investigation of absorption spectral measurement, 1H NMR measurements
新合成的带有碘离子作为抗衡阴离子的供体-π-受体(D-π-A)型吡啶鎓染料显示特定的溶剂变色现象,导致卤化溶剂中吸收带的大红移:D的红移-π-A在卤化溶剂型染料吡啶鎓比低的非卤化溶剂的较大ɛ - [R值。吸收光谱测量研究,11 H NMR测量和半经验分子计算(使用SCRF Onsager模型的AM1和INDO / S)显示D–π–A型吡啶鎓染料的分子内电荷转移(ICT)特性在卤化溶剂中变得更强。根据实验结果和理论计算,讨论了卤代溶剂对D-π-A型吡啶鎓染料的大红移的影响。© 2012爱思唯尔科学。版权所有。