用于光选择性温室覆盖应用的苝染料掺杂聚甲基丙烯酸甲酯薄膜的光谱特性

Spectral Properties of PMMA Films Doped by Perylene Dyestuffs for Photoselective Greenhouse Cladding Applications.

作者信息

El-Bashir S M, AlSalhi M S, Al-Faifi F, Alenazi W K

机构信息

Department of Physics & Astronomy, Science College, King Saud University, Riyadh 11461, Saudi Arabia.

Department of Physics, Faculty of Science, Benha University, Benha 13513, Egypt.

出版信息

Polymers (Basel). 2019 Mar 14;11(3):494. doi: 10.3390/polym11030494.

DOI:10.3390/polym11030494

PMID:30960478

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6473518/

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 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.

摘要

通过溶液浇铸技术，从掺杂不同浓度红色苝染料（克雷默94720和克雷默94739）的聚合物溶液中制备了发光聚甲基丙烯酸甲酯（PMMA）薄膜。使用X射线衍射（XRD）、透射电子显微镜（TEM）、光吸收和荧光光谱研究了染料浓度对结构和光谱性质的影响。通过荧光光谱测量确定了光选择性PMMA薄膜的最佳染料浓度，结果表明，对于所研究的染料，掺杂浓度为10 wt%时具有最佳发射性能。加速光稳定性测试表明，制备的薄膜对地面太阳紫外线辐射（UVA）具有良好的稳定性。结果证实，所研究的薄膜在光选择性温室覆盖应用中具有广阔的应用前景，因为优化后的薄膜在特殊叶绿素a的作用光谱下会发出荧光。