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Photophysical properties of new p-phenylene- and benzodithiophene-based fluorophores for luminescent solar concentrators (LSCs)
Dyes and Pigments ( IF 4.5 ) Pub Date : 2020-03-16 , DOI: 10.1016/j.dyepig.2020.108368
Gianluigi Albano , Tony Colli , Tarita Biver , Laura Antonella Aronica , Andrea Pucci

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.



中文翻译:

新型基于对苯撑和苯并二噻吩基的荧光团的光物理性质用于发光太阳能聚光器(LSC)

在这项研究中,我们报告了新的有机荧光团的合成,其中包含通过三键和羰基连接到噻吩单元的对苯撑或苯并二噻吩环核,以及它们在制造发光太阳能集中器(LSC)中的应用。评价了它们的光学性质。不依赖于核,包含共噻吩残基的染料似乎对于lscs应用是最有前途的。实际上羰基基团稍微提高了量子产率,但显着增加了发射的红移,因此吸收光谱与发射光谱之间的叠加减少了。在苯并二噻吩中心的情况下,在光谱的黄红色部分实现了发光。然后选择后一种染料在聚甲基丙烯酸甲酯(PMMA)基质中进行测试。它表现出良好的相容性和均匀分布,没有自动吸收现象,在1 wt%时的光学效率约为8%,在相同浓度范围内可与那些PMMA / Lumogen Red薄膜相媲美。

更新日期:2020-03-16
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