Novel Deep Eutectic Solvents Based on Pyrogallol: Synthesis and Characterizations,Journal of Chemical & Engineering Data

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Novel Deep Eutectic Solvents Based on Pyrogallol: Synthesis and Characterizations
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2021-04-27 , DOI: 10.1021/acs.jced.1c00023
Karzan A. Omar _{1,

2} , Rahmat Sadeghi ₁

Affiliation

In this work, novel binary deep eutectic solvents (DESs) have been synthesized using pyrogallol (PY) as a hydrogen bond donor (HBD) and quaternary ammonium salts, choline chloride (ChCl), n-dodecyltrimethylammonium bromide (n-DDTMAB), tetraethylammonium bromide (TEAB), tetrapropylammonium bromide (TPAB), and tetrabutylammonium bromide (TBAB), as hydrogen bond acceptors (HBAs) and their physical properties were measured at different temperatures. The effects of temperature, alkyl chain length of HBAs, and molar ratio on the physical properties of the DESs were studied. It was found that the values of density, speed of sound, conductivity, viscosity, refractive index, and surface tension of the DESs follow the order [TEAB:PY] > [TPAB:PY] > [TBAB:PY]. The effect of different molar ratios on the physical properties shows that the values of density, conductivity, viscosity, and refractive index of the DESs follow the order [ChCl:PY(1:2)] > [ChCl:PY(1:1)], and the speed of sound and surface tension values follow the reverse order. The results show that the strength of the interactions between the investigated HBAs and PY follows the order [TBAB:PY] > [TPAB:PY] > [TEAB:PY] > [n-DDTMAB:PY] and [ChCl:PY(1:2)] > [ChCl:PY(1:1)], and the packing effect follows the reverse order. The chemical structures, purities, and interactions of DESs between the HBAs and HBD were investigated using ¹H and ¹³C nuclear magnetic resonance and Fourier transform infrared analyses. The measured physical properties of the new DES mixtures that have been studied in this work provide useful information about their application in different industrial fields.

中文翻译：

基于邻苯三酚的新型深共晶溶剂：合成与表征

在这项工作中，已经使用邻苯三酚（PY）作为氢键供体（HBD）和季铵盐，氯化胆碱（ChCl），正十二烷基三甲基溴化铵（n-DDTMAB），四乙基溴化铵（TEAB），四丙基溴化铵（TPAB）和四丁基溴化铵（TBAB）作为氢键受体（HBA），并在不同温度下测量了它们的物理性质。研究了温度，HBAs的烷基链长和摩尔比对DESs物理性能的影响。发现DES的密度，声速，电导率，粘度，折射率和表面张力的值遵循[TEAB：PY]> [TPAB：PY]> [TBAB：PY]的顺序。不同摩尔比对物理性能的影响表明，DES的密度，电导率，粘度和折射率的值遵循[ChCl：PY（1：2）]> [ChCl：PY（1：1）的顺序]，并且声速和表面张力值遵循相反的顺序。结果表明，所研究的HBA与PY之间的相互作用强度遵循以下顺序：[TBAB：PY]> [TPAB：PY]> [TEAB：PY]> [n-DDTMAB：PY]和[ChCl：PY（1 ：2）]> [ChCl：PY（1：1）]，堆积效果遵循相反的顺序。研究了HBAs和HBD之间DES的化学结构，纯度和相互作用¹ H和¹³ C核磁共振和傅里叶变换红外分析。在这项工作中研究的新型DES混合物的实测物理性质提供了有关它们在不同工业领域中的应用的有用信息。

更新日期：2021-05-13

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