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Photophysical properties of new p-phenylene- and benzodithiophene-based fluorophores for luminescent solar concentrators (LSCs)
- Publication Year :
- 2020
-
Abstract
- In this study, we report on the synthesis of new organic fluorophores containing either the p-phenylene or the benzodithiophene cyclic nucleus connected to thiophene units via triple bonds and carbonyl group, and on their application for the fabrication of luminescent solar concentrators (LSCs). Their optical properties were evaluated. Independent of the core, dyes containing the CO-thiophene residues seem to be the most promising for LSCs applications. In fact , carbonyl groups slightly enhance the quantum yield but significantly increase the red-shift of the emission so that the superimposition between the absorbance spectrum and the emission one is diminished. In the case of the benzodithiophene centre, light emission in the yellow-red portion of the spectrum is achieved. The latter dye is then selected for tests in a poly(methyl methacrylate) (PMMA) matrix. It showed good compatibility and homogenous distribution, no auto-absorption phenomena, and optical efficiencies of about 8% at 1 wt. %, i.e. comparable with those PMMA/Lumogen Red films in the same range of concentration.
- Subjects :
- Materials science
General Chemical Engineering
Organic dye
Quantum yield
02 engineering and technology
010402 general chemistry
Photochemistry
01 natural sciences
Absorbance
chemistry.chemical_compound
Phenylene
Thiophene
Methyl methacrylate
Luminescent solar concentrator
Optical efficiency
Solvatochromism
Benzodithiophene
Sonogashira reaction
Process Chemistry and Technology
021001 nanoscience & nanotechnology
Triple bond
0104 chemical sciences
chemistry
Light emission
0210 nano-technology
Luminescence
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....e138e71eceeadaebc05d01c8550764dd