Synthesis of novel viscosity sensitive pyrrolo-quinaldine based styryl dyes: Photophysical properties, electrochemical and DFT study
作者:Mahesh Jachak、Sushil Khopkar、Ankur Chaturvedi、Amruta Joglekar、Ganapati Shankarling
DOI:10.1016/j.jphotochem.2020.112557
日期:2020.6
Ranging from non-polar solvents towards polar solvents, these dyes exhibited emission wavelength and Stokes shift from 487−605 nm and 85−180 nm respectively. The photophysical study of these dyes in seven solvents suggested that these dyes show positive emission solvatochromism which was investigated from Reichardt's ET (30) plot, Lippert-Mattaga graph and MacRae solvent polarity scale plots. In addition
我们合成了两种新型苯乙烯基染料,即(E)-2-(2-(2-(9-丁基-9H-咔唑-3-基)乙烯基)-3,3,8-三甲基-3H-吡咯并[3,2-h ]喹啉(PQC)和(E)-10-丁基-3-(2-(3,3,8-三甲基-3H-吡咯并[3,2-h]喹啉-2-基)乙烯基)-10H-吩噻嗪(PQPT)。这些染料通过FT-IR,HR-MS,1 H和13 C NMR光谱技术进行了表征。两种染料均显示在399-427 nm范围内的吸收波长。从非极性溶剂到极性溶剂,这些染料的发射波长和斯托克斯位移分别从487-605 nm和85-180 nm。这些染料在七种溶剂中的光物理研究表明,这些染料显示出正发射溶剂变色现象,这是根据Reichardt的E T进行研究的(30)图,Lippert-Mattaga图和MacRae溶剂极性标度图。另外,这些染料显示出分子内电荷转移性质的证据,这可以通过Wellers,Ret