Abstract
Luminescent polymethylmethacrylate (PMMA) films were prepared by the solvent-casting technique from polymer solution doped with different concentrations of red perylene dyestuffs (KREMER 94720 and KREMER 94739). The effect of the dye concentration on the structure and spectroscopic properties was studied using X-ray diffraction (XRD), transmission electron microscope (TEM) optical absorption, and fluorescence spectroscopy. The optimum dye concentration of photoselective PMMA films was determined by the fluorescence spectroscopy measurements and showed the best emission properties for the doping concentration 10−3 wt % of the investigated dyes. The accelerated photostability tests showed promising stability of the prepared films towards terrestrial solar ultraviolet radiation (UVA). The results endorsed a promising application of the investigated films in photoselective greenhouse cladding applications as the optimized film fluoresces at the action spectra of special chlorophyll a.
Highlights
Polymeric materials, such as polymethylmethacrylate (PMMA), have gained a high interest since they can exhibit unique physical and chemical properties which greatly differ from those of their individual components [1,2,3,4,5,6]
These properties have led to the exploitation of perylenes in various applications such as organic field-effect transistors, thin-film transistors, complex supramolecular systems, and, increasingly, organic photovoltaics (OPVs) [20,21,22]
It is clearlynoted noted that aggregates having a thatthe thedye dyemolecules moleculesare aredistributed distributedininthe theform formofofspherically sphericallyshaped shapedmolecular molecular aggregates having small diameter in the range of 5–15 nm.nm. This feature waswas observed for all prepared filmsfilms due due to the a small diameter in the range of 5–15
Summary
Polymeric materials, such as polymethylmethacrylate (PMMA), have gained a high interest since they can exhibit unique physical and chemical properties which greatly differ from those of their individual components [1,2,3,4,5,6]. PDI is a polycyclic aromatic hydrocarbon with the chemical formula C20 H12 ; the dye derivatives of this molecule have been studied for their range of useful properties including high stability, intense absorbance in the UV/visible range, high fluorescence quantum yield up to 100%, and being excellent n-type semiconductors [15,16,17,18,19] These properties have led to the exploitation of perylenes in various applications such as organic field-effect transistors, thin-film transistors, complex supramolecular systems, and, increasingly, organic photovoltaics (OPVs) [20,21,22]. Spectral modifications can be made to affect the quality and quantity of These claddings are known as “photoselective” as they modify the light spectrum which enters the the incoming solar radiation by using particular materials as greenhouse cladding. SABIC with red perylene dyestuffs to increase the plant productivity by harvesting the nonutilized solar photophysical spectra inside characteristics greenhouses. of photoselective PMMA films doped with red perylene dyestuffs to increase the plant productivity by harvesting the nonutilized solar spectra inside greenhouses
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