Symmetrical and unsymmetrical ferrocenyl perylenediimides: Design, synthesis and properties

被引：14

作者：

Dhokale, Bhausaheb ^{[1
]}

Jadhav, Thaksen ^{[1
]}

Patil, Yuvraj ^{[1
]}

Misra, Rajneesh ^{[1
]}

机构：

[1] Indian Inst Technol Indore, Dept Chem, Indore 452020, Madhya Pradesh, India

来源：

DYES AND PIGMENTS | 2016年 / 134卷

关键词：

Perylenediimide; Ferrocene; Donor-Acceptor; Charge transfer; Photophysics; Electrochemistry; DONOR-ACCEPTOR; BENZOTHIADIAZOLES SYNTHESIS; BODIPYS SYNTHESIS; HIGH-STABILITY; DIIMIDE; DYE; SEMICONDUCTORS; DERIVATIVES; ELECTRONICS; PYRAZABOLES;

D O I：

10.1016/j.dyepig.2016.07.006

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Symmetrical and unsymmetrical ferrocenyl perylenediimides (PDIs) 1-6 were designed and synthesized by the Sonogashira cross-coupling and nucleophilic aromatic substitution (SNAr) reactions. The PDIs were functionalized with ferrocenyl moiety through varying spacers to study the effect of one and two ferrocenyl units on their photophysical and electrochemical properties. The ferrocenyl unit and PDI were coupled through 3-phenylacetylene, 4-phenylacetylene and 4-phenoxy linkages to tune the electronic properties. The ferrocenyl PDIs show red shift in the absorption with the increasing conjugation. The efficient electronic communication between the ferrocenyl unit and PDI leads to the strong charge transfer from donor ferrocene to the acceptor PDI core and quenching of fluorescence. The electrochemical studies reveal the effect of spacers on the Donor-Acceptor (D-A) interactions and electronic energy levels. The oxidation of ferrocenyl PDIs 1-6 are harder than free ferrocene indicating the considerable delocalization of ferrocenyl electrons on the PDI moiety. The experimental observations were adequately supported by theoretical calculations. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：164 / 170

页数：7

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