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• W2051233927 abstract "In this paper, we study three symmetrical D-pi-D chromophores containing dithieno[3,2-b:2',3'-d]thiophene (DTT) as the pi-center and various donor end moieties, by means of UV-vis-NIR and FT-Raman spectroscopy and in situ spectroelectrochemistry. The compounds display dual redox properties: all exhibited two oxidations and single stable reduction peaks contrarily to the one or two oxidations and none reduction which could be anticipated in view of their chemical structures. We analyze the possible electronic modulation by the pi-conjugated DTT relay in the redox process and electronic coupling between the two electron donor (D) units attached through conjugation to opposite sides of the pi-linker. To this end, the UV-vis-NIR and FT-Raman spectra of the neutral compounds and of the charged species generated upon in situ p- or n-doping have been recorded and interpreted with the help of Density Functional Theory (DFT) calculations. The analysis of the peculiar Raman features of these pi-conjugated chromophores is guided by the formalism of the Effective Conjugation Coordinate (ECC) theory. This research shows that the Raman spectroscopic characterization of this type of D-pi-D structures is a powerful tool to derive information about their pi-conjugational properties in the pristine and doped states." @default.
• W2051233927 created "2016-06-24" @default.
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• W2051233927 date "2004-09-25" @default.
• W2051233927 modified "2023-09-30" @default.
• W2051233927 title "Electronic Modulation of Dithienothiophene (DTT) as π-Center of D-π-D Chromophores on Optical and Redox Properties: Analysis by UV−Vis−NIR and Raman Spectroscopies Combined with Electrochemistry and Quantum Chemical DFT Calculations" @default.
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• W2051233927 doi "https://doi.org/10.1021/ja047058o" @default.
• W2051233927 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/15479093" @default.
• W2051233927 hasPublicationYear "2004" @default.
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