Synthesis and Properties of an Electropolymer Obtained from a Dimeric Donor/Acceptor System with a 4,4鈥?Spirobi[cyclopenta[2,1-b:3,4-b鈥瞉dithiophene] Core

详细信息    查看全文

• 作者：Simonetta Orlandi ; Gianluca Pozzi ; Marco Cavazzini ; Daniela Minudri ; Miguel Gervaldo ; Luis Otero ; Fernando Fungo
• 刊名：Macromolecules
• 出版年：2015
• 出版时间：July 14, 2015
• 年：2015
• 卷：48
• 期：13
• 页码：4364-4372
• 全文大小：528K
• ISSN：1520-5835

文摘

The design and synthesis of two potentially electropolymerizable electron donor鈥揳cceptor dyes characterized by a cruciform 4,4鈥?spirobi[cyclopenta[2,1-b:3,4-b鈥瞉dithiophene] core is here outlined. The new molecules feature two perpendicularly aligned cyclopentadithiophene branches, each one having an electrodimerizable, electron donor triphenylamine unit and an electron acceptor dicyanovinylene group. By merging these structural elements, the light absorption ability of the conjugated cyclopentadithiophene chromophore is extended to a broad region of the visible spectrum. The photoelectroactive film obtained from one of the dyes by electrochemical deposition technique retains the ability to generate photoinduced charge-separated states and to transport holes, turning this material into a unique example of donor鈥揳cceptor polymer with potential application in the development of organic optoelectronic devices.