The hydrophobic quaternary ammonium ionic liquid (IL), N-trimethyl-N-butylammonium bis (trifluoromethanesulfonyl) imide [N4111][TFSI] with a 2-propanol additive captures significant normal CO₂ (nCO₂) at room temperature and ambient pressure. The 2-propanol-based mixture promotes conductivity under the nCO₂ circumstance. To investigate the conformational changes induced by nCO₂ important for its storage ability, Raman spectroscopy measurements on quenched quaternary ammonium IL-propanol mixtures are systematically conducted. Through liquid nitrogen quenching, the Raman intensities indicating the repulsive molecular interaction between 2-propanol and nCO₂ are clearly observed, and exhibit distinct nCO₂ mixing. The quenched [N4111][TFSI]-propanol mixtures highlighted that the cation-anion interaction was modified by the 2-propanol additive. Freezing sites of nCO₂ correspond to amount of the nCO₂ capture.

具有2-丙醇添加剂的疏水性季铵离子液体（IL），N-三甲基-N-丁基铵双（三氟甲磺酰基）酰亚胺[N4111] [TFSI]在室温和环境压力下捕获显着的正常CO ₂（n CO ₂） 。在n CO _2的情况下，基于2-丙醇的混合物提高了电导率。研究n CO ₂诱导的构象变化对于其重要的存储能力，系统地进行了淬灭季铵IL-丙醇混合物的拉曼光谱测量。通过液氮淬灭，清楚地观察到指示2-丙醇与n CO ₂之间的排斥分子相互作用的拉曼强度，并表现出不同的n CO ₂混合。淬灭的[N4111] [TFSI]-丙醇混合物强调指出，阳离子-阴离子相互作用被2-丙醇添加剂改性。n CO _2的冻结位点对应于n CO ₂捕获量。