Study on the molecular structure of phenolphthalein
Zhang Meijuan1, Li Zeteng2, Zhao Yizhe2, Zhang Meihuan2, Liu Rong2, Wu Mengyao2, Yu Hongwei2,
Xu Yuanyuan2
1. Hebei Hengshui Hongda Experimental School, Hengshui 053400, China; 2. College of Chemical Technology, Shijiazhuang University, Shijiazhuang 050035, China
摘要 采用中红外（MIR）光谱（包括一维 MIR 光谱、二阶导数 MIR 光谱、四阶导数 MIR 光谱及去卷积 MIR 光谱）开展了酚酞的分子结构研究。实验发现：酚酞分子的红外吸收模式主要包括CH 伸缩振动模式（ν■）、C=O 伸缩振动模式（ν■）和 C=C伸缩振动模式（ν■）；酚酞分子的去卷积 MIR 光谱的谱图分辨能力要优于相应的一维 MIR 光谱、二阶导数 MIR 光谱和四阶导数 MIR 光谱。本项研究拓展了 MIR 光谱技术在重要的精细化学品（酚酞）分子结构的研究范围。
Abstract：The molecular structure of phenolphthalein was studied by mid-infrared (MIR) spectrum(including one-dimensional MIR spectrum, second derivative MIR spectrum, fourth derivative MIR spectrum and deconvolution MIR spectrum). It is found that the infrared absorption modes of phenolphthalein molecule mainly include CH stretching vibration mode (νC-H-phenolphthalein), C=O stretching vibration mode (νC=O-phenolphthalein) and C=C stretching vibration mode (νC=C-phenolphthalein); the resolution of the deconvolution MIR spectrum of phenolphthalein molecule was better than the corresponding one-dimensional MIR spectrum, the second derivative MIR spectrum and the fourth derivative MIR spectrum. This study expands the research scope of MIR spectrum in the molecular structure of important fine chemicals (phenolphthalein).
