高压下磷酸酯类离子液体1-(O,O-二乙基膦酰丙基)-3-辛基咪唑六氟磷酸盐的拉曼光谱和粘度研究
Raman Spectroscopy and Viscosity Study of Phosphate Ionic Liquid 1-(O,O-Diethylphosphonyl-N-Propyl)-3-Octylimidazolium Hexafluorophosphate under High Pressure
DOI: 10.12677/JAPC.2024.131009, PDF,    国家自然科学基金支持
作者: 李海宁*：河南大学物理与电子学院，河南 开封；郑州轻工业大学电子信息学院，河南省磁电信息功能材料重点实验室，河南；郑州威科姆科技股份有限公司，河南 郑州；汪俊博, 程学瑞, 王 征, 朱 祥, 梁永福：郑州轻工业大学电子信息学院，河南省磁电信息功能材料重点实验室，河南 郑州
关键词: 室温离子液体；高压；拉曼光谱；相变；粘度；Room Temperature Ionic Liquids； High Pressure； Raman Spectra； Phase Transition； Viscosity
摘要: 磷酸酯类离子液体1-(O,O-二乙基膦酰丙基)-3-辛基咪唑六氟磷酸盐([DPPOIM][PF6])是一种新型的润滑剂材料，本文利用拉曼光谱和自制的高压粘度测量装置对其在高压的结构、相变及粘度进行了研究。基于高压拉曼光谱结果和红宝石荧光峰峰位的分析，推断[DPPOIM][PF6]的玻璃化转变压力约为2.9 GPa，[DPPOIM][PF6]在该压力点由液态转变为玻璃态。采用自制的粘度测量装置测得[DPPOIM][PF6]高压下的粘度数据，并将粘度与压力的关系进行线性拟合，获得[DPPOIM][PF6]的玻璃化转变压力点为2.6 GPa，这与分析红宝石荧光峰获得的结果基本一致。通过研究磷酸酯类离子液体润滑剂在高压下的拉曼光谱和粘度，对于拓宽其在高压等极端条件下的应用具有非常重要的实用价值。
Abstract: Phosphateionic liquid 1-(O,O-diethylphosphonyl-n-propyl)-3-octylimidazolium hexafluorophosphate ([DPPOIM][PF6]) is a novel lubricant. The structure, phase transition, and viscosity of [DPPOIM][PF6] under high pressure were studied by Raman spectroscopy and a homemade high-pressure viscosity device. By analyzing the peak positions of Raman spectra and ruby fluorescence peaks, it could be inferred that [DPPOIM][PF6] underwent a glass transition near 2.9 GPa, from a liquid state to a glassy state. The viscosity data of [DPPOIM][PF6] under high pressure were measured using a homemade viscosity device, and the relationship between viscosity and pressure was linearly fitted to obtain the glass transition pressure of 2.6 GPa, which was basically consistent with the glass transition pressure obtained by analyzing Raman spectra and ruby fluorescence peaks for [DPPOIM][PF6]. The study of the Raman spectra and viscosity of phosphate ionic liquid under high pressure is of great practical significance for expanding their applications under extreme conditions such as high pressure.
文章引用：李海宁, 汪俊博, 程学瑞, 王征, 朱祥, 梁永福. 高压下磷酸酯类离子液体1-(O,O-二乙基膦酰丙基)-3-辛基咪唑六氟磷酸盐的拉曼光谱和粘度研究[J]. 物理化学进展, 2024, 13(1): 65-73. https://doi.org/10.12677/JAPC.2024.131009

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