An efficient synthetic approach towards new 5,5'-diaryl-2,2'-bipyridine-based fluorophores

作     者：Alexey P.Krinochkin Dmitry S.Kopchuk Nikolay V.Chepchugov Grigory A.Kim Igor S.Kovalev Matiur Rahman Grigory V.Zyryanov Adinath Majee Vladimir L.Rusinov Oleg N.Chupakhin 

作者机构：Ural Federal UniversityYekaterinburg 620002Russian Federation Postovsky Institute of Organic Synthesis of RAS(Ural Division)Yekaterinhurg 620990Russian Federation Department of ChemistryVisva-Bharati(A Central University)Santiniketan 731235India 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2017年第28卷第5期

页      面：1099-1103页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the Russian Science Foundation(No.15-13-10033) 

主　　题：2 2'-Bipyridines 1 2 4-Triazines Aza-Diels-Alder reaction Fluorescence 

摘      要：An efficient approach has been developed for the synthesis of 5,5＇-diaryl-2,2＇-bipyridines via their 1,2,4-triazine *** notable advantages of the present method are：The possibility of varying the aromatic substituents in the positions 5 and 5＇ of bipyridine core and the possibility for obtaining 2,2＇-bipyridines bearing a fused cyclopentene core to increase the solubility in organic *** 5,5＇-diaryl-2,2＇-bipyridines exhibited an intense emission in a range of ca.422-521 nm in acetonitrile solution;depending on the nature of the aromatic substituents and the presence of annulated cyclopentene *** from that,the significant bathochromic shifts of the both absorption and emission maxima were observed in comparison with a number of previously described similar *** some cases the significant increasing of the fluorescence quantum yields took place.