1,7- And 1,6-Regioisomers of Diphenoxy and Dipyrrolidinyl Substituted Perylene Diimides: Synthesis, Separation, Characterization, and Comparison of Electrochemical and Optical Properties
作者:Rajeev K. Dubey、Alexander Efimov、Helge Lemmetyinen
DOI:10.1021/cm1018647
日期:2011.2.8
substituted perylene diimides are obtained in pure form. Optical and redox properties of these 1,6-regioisomers are examined extensively and compared with respective 1,7-regioiosmers. The optical and electrochemical characteristics of diphenoxy substituted isomers, 1,7-5 and 1,6-5, were found to be virtually the same. However, quite unexpectedly, crucial differences were observed in the properties of regioisomers
的1,7-和1,6-区域异构体Ñ,Ñ 'N'-二辛基-二(2,4-二-叔丁基苯氧基)二萘嵌苯二酰亚胺(1,7- 5和1,6- 5)和Ñ,Ñ ' N'-二辛基dipyrrolidinylperylene酰亚胺(1,7- 8和1,6- 8)染料制备。使用常规分离方法成功地从区域异构混合物中分离出这些1,7和1,6-区域异构体,并随后通过300 MHz 1进行了明确表征1 H NMR光谱。这是首次以纯净形式获得二苯氧基和二吡咯烷基取代的per二酰亚胺的1,6-区域异构体。广泛检查了这些1,6-区域异构体的光学和氧化还原性质,并将其与各自的1,7-区域异构体进行了比较。二苯氧基取代异构体的光学和电化学特性,1,7- 5和1,6- 5,被认为是几乎相同的。然而,相当意外地,在dipyrrolidinyl取代的PDI的区域异构体的,1,7-的特性中观察到重要区别8和1,6- 8。差分脉冲伏安法透露,1