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Dyes with tunable absorption properties from the visible to the near infrared range : 2,4,5,7-tetranitrofluorene (TNF) as a unique electron acceptor
- Source :
- Dyes and Pigments, Dyes and Pigments, 2021, 189, pp.109250. ⟨10.1016/j.dyepig.2021.109250⟩, Dyes and Pigments, Elsevier, 2021, 189, pp.109250. ⟨10.1016/j.dyepig.2021.109250⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- International audience; Fourteen dyes based on 2,4,5,7-tetranitrofluorene (TNF) as the electron acceptor have been designed and prepared in a one-step synthesis. By modifying the electron donor, optical properties of the dyes could be efficiently tuned and an absorption ranging between 450 nm and 700 nm could be determined by UV-visible absorption spectroscopy. To get a deeper insight into the optical properties, solvatochromism of the fourteen dyes has also been examined. For all dyes, a positive solvatochromism was determined using different solvent polarity scales such as the Kamlet-Taft and the Catalan empirical scales. Finally, electrochemical properties were also examined, and a comparison of the electrochemical and optical bandgaps could be established. Theoretical calculations were also performed to characterize the different dyes.
- Subjects :
- Materials science
Absorption spectroscopy
General Chemical Engineering
solvatochromism
TNF
Electron donor
02 engineering and technology
010402 general chemistry
Photochemistry
Electrochemistry
01 natural sciences
chemistry.chemical_compound
chromophore
mechanosynthesis
Absorption (electromagnetic radiation)
chemistry.chemical_classification
Range (particle radiation)
[CHIM.ORGA]Chemical Sciences/Organic chemistry
Process Chemistry and Technology
Near-infrared spectroscopy
Solvatochromism
near infrared absorption
Electron acceptor
021001 nanoscience & nanotechnology
Push-pull dyes
0104 chemical sciences
chemistry
Knoevenagel reaction
tetranitrofluorene
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 01437208
- Database :
- OpenAIRE
- Journal :
- Dyes and Pigments, Dyes and Pigments, 2021, 189, pp.109250. ⟨10.1016/j.dyepig.2021.109250⟩, Dyes and Pigments, Elsevier, 2021, 189, pp.109250. ⟨10.1016/j.dyepig.2021.109250⟩
- Accession number :
- edsair.doi.dedup.....16d376582f11c7dd432b572702fcb228