Mannu Alberto, Cardano Francesca, Baldino Salvatore, Fin Andrea
Department of Chemistry, University of Turin, Via Pietro Giuria 7, I-10125 Turin, Italy.
Department of Drug Science and Technology, University of Turin, Via Pietro Giuria 9, I-10125 Turin, Italy.
Materials (Basel). 2021 Jun 20;14(12):3418. doi: 10.3390/ma14123418.
Three ternary mixtures composed by choline chloride (ChCl), ethylene glycol (EG), and a second hydrogen bond donor (HBD) as ethanol (A), 2-propanol (B), and glycerol (C) were studied in terms of composition related to the band gap energy (BGE). A Design of Experiments (DoE) approach, and in particular a three-components design, was employed for determining the variation of the BGE upon the composition of each system. UV-VIS analysis and subsequent Tauc plot methodology provided the data requested from the DoE, and multivariate statistical analysis revealed a drop of the BGE in correspondence to specific binary compositions for systems A and B. In particular, a BGE of 3.85 eV was registered for the mixtures ChCl/EtOH (1:1) and ChCl/2-propanol (1:1), which represents one of the lowest values ever observed for these systems.
研究了由氯化胆碱（ChCl）、乙二醇（EG）和作为第二氢键供体（HBD）的乙醇（A）、2-丙醇（B）和甘油（C）组成的三种三元混合物与带隙能量（BGE）相关的组成。采用实验设计（DoE）方法，特别是三组分设计，来确定每个系统组成变化时BGE的变化。紫外可见光谱分析及随后的陶克图方法提供了DoE所需的数据，多变量统计分析表明，系统A和B在特定二元组成时BGE下降。特别是，ChCl/乙醇（1:1）和ChCl/2-丙醇（1:1）混合物的BGE为3.85 eV，这是这些系统中观测到的最低值之一。
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