M. Ashraful Hasan , Ismail M.M. Rahman , M. Rithoan Hossain , Faisal Islam Chowdhury
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引用次数: 0
摘要
由于环境问题和气候变化的影响日益严重,化学加工行业正在逐步采用绿色技术和可持续废物管理技术。深共晶溶剂(DES)是由中性分子(如氯化胆碱,ChCl)与氢键供体结合形成的,已成为在化学、制药和分离过程中具有多种应用前景的生态友好型溶剂。在此背景下,现代量子研究的重点是共晶混合物,特别是氯化胆碱作为氢键受体与各种氢键供体以特定摩尔比形成的共晶混合物。通过密度泛函理论(DFT)对分子动力学模拟的分析,研究了这些 DES 的性质和有效性。这种量子计算方法为设计所需的导电液体提供了宝贵的见解。此外,通过密度态分析还可以研究电子结构,量化单位能量所占的态数。利用 DFT B3LYP/6-31G(d,p)模拟了实验合成的 DES 的量子和振动特性。目前的研究旨在设计和了解共晶溶剂的特性,以便为化学工业开发新型、无害环境的替代品。
Quantum chemical investigations into the structural and spectroscopic properties of choline chloride-based deep eutectic solvents
The chemical process industries are progressively embracing green technologies and sustainable waste management techniques due to growing environmental concerns and the impact of climate change. Deep eutectic solvents (DESs), formed by combining neutral molecules (e.g., choline chloride, ChCl) with hydrogen bond donors, have emerged as promising eco-friendly solvents with diverse applications in chemical, pharmaceutical, and separation processes. In this context, modern quantum-based research is focused on eutectic mixtures, particularly those formed by ChCl as a hydrogen bond acceptor with various hydrogen bond donors at specific mole ratios. The properties and validity of these DESs are investigated through density functional theory (DFT) analysis of their molecular dynamics simulations. This quantum computational approach offers valuable insights for designing the desired conductive liquids. Furthermore, the density of states analysis allows for studying the electronic structure and quantifying the number of states occupied per unit of energy. The quantum and vibrational properties of experimentally synthesized DESs are simulated using DFT B3LYP/6–31G(d,p). Current research aims to design and understand the properties of eutectic solvents to develop novel, environmentally benign alternatives for the chemical industry.