典型文献
Synthesis and fluorescent properties of quinoxaline derived ionic liquids
文献摘要：
Ionic liquids(ILs)have attracted increasing attention since last few decades due to their high molecular design abilities and wide applications in different fields.In this study,four novel fluorescent isoquinolino[2,1-a]quinoxalin-5-ium ILs were designed and synthesized via a two-step process including a simple dual Schiffs base formation and a subsequent[RhCp*Cl2]2-catalyzed oxidative C-H activation/annulation reaction.The as-synthesized ILs were extensively characterized using FT-IR,1H-NMR,13C-NMR,19F-NMR,HSQC-NMR,HMBC-NMR and HR-MS.Their photophysical properties were determined by steady-state fluorescence spectroscopy.The results demonstrate that all these ILs showed dual or triple emissions,large stokes shift(90 nm)and mechanochromic behaviors.Basing on solvatochromism and titration experiments,it is thought that the emission bands of the ILs are raised from their local excited states,charge transfer states or excited state proton transfer of cations,while the substitute effect of these quinoxaline derived ILs on their stokes shifts is negligible.
文献关键词：
中图分类号：
作者姓名：
Jiaqi Wu;Lei Zhang;Jinxing Long;Qiang Zeng;Biaolin Yin;Xuehui Li
作者机构：
School of Chemistry and Chemical Engineering,Guangdong Provincial Key Lab of Green Chemical Product Technology,State Key Laboratory of Pulp&Paper Engineering,South China University of Technology,Guangzhou,510640,China
文献出处：
引用格式：
[1]Jiaqi Wu;Lei Zhang;Jinxing Long;Qiang Zeng;Biaolin Yin;Xuehui Li-.Synthesis and fluorescent properties of quinoxaline derived ionic liquids)[J].绿色能源与环境（英文）,2022(05):996-1005
A类：
isoquinolino,Schiffs,RhCp,mechanochromic,solvatochromism
B类：
Synthesis,fluorescent,properties,quinoxaline,derived,ionic,liquids,Ionic,ILs,have,attracted,increasing,attention,since,last,few,decades,due,their,high,molecular,abilities,wide,applications,different,fields,In,this,study,four,novel,ium,were,designed,synthesized,via,two,step,process,including,simple,dual,base,formation,subsequent,Cl2,catalyzed,oxidative,activation,annulation,reaction,extensively,characterized,using,FT,1H,NMR,13C,19F,HSQC,HMBC,Their,photophysical,determined,by,steady,fluorescence,spectroscopy,results,demonstrate,that,all,these,showed,triple,emissions,large,stokes,behaviors,Basing,titration,experiments,thought,bands,are,raised,from,local,excited,states,charge,transfer,proton,while,substitute,effect,shifts,negligible
AB值：
0.62222
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