New phase transition of p-cresol studied by DSC analysis and FT-IR spectroscopy

IF 4.3 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Pub Date : 2024-10-06 DOI:10.1016/j.saa.2024.125252

J. Baran , N.A. Davydova , M. Drozd

引用次数: 0

Abstract

We have investigated polymorphism in p-cresol using the FT-IR spectroscopy and differential scanning calorimetry. The present results show that in addition to the well-known two crystalline phases of p-cresol, which melts at 307.6 and 309.2 K, we discovered the existence of a new crystalline phase, which melts at 302.9 K. For the first time we have received the FT-IR spectra of three polymorphs and their temperature dependencies in the region 300–12 K. Comparison between the FT-IR spectra of three polymorphs shows that they are completely different.

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利用 DSC 分析和 FT-IR 光谱研究对甲酚的新相变。

我们利用傅立叶变换红外光谱和差示扫描量热法研究了对甲酚的多态性。目前的研究结果表明，除了众所周知的对甲酚在 307.6 和 309.2 K 熔化的两种结晶相之外，我们还发现了一种新的结晶相，它在 302.9 K 熔化。我们首次获得了三种多晶体的傅立叶变换红外光谱及其在 300-12 K 区域的温度依赖性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 物理-光谱学

CiteScore

8.40

自引率

11.40%

发文量

1364

审稿时长

40 days

期刊介绍： Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (SAA) is an interdisciplinary journal which spans from basic to applied aspects of optical spectroscopy in chemistry, medicine, biology, and materials science. The journal publishes original scientific papers that feature high-quality spectroscopic data and analysis. From the broad range of optical spectroscopies, the emphasis is on electronic, vibrational or rotational spectra of molecules, rather than on spectroscopy based on magnetic moments. Criteria for publication in SAA are novelty, uniqueness, and outstanding quality. Routine applications of spectroscopic techniques and computational methods are not appropriate. Topics of particular interest of Spectrochimica Acta Part A include, but are not limited to: Spectroscopy and dynamics of bioanalytical, biomedical, environmental, and atmospheric sciences, Novel experimental techniques or instrumentation for molecular spectroscopy, Novel theoretical and computational methods, Novel applications in photochemistry and photobiology, Novel interpretational approaches as well as advances in data analysis based on electronic or vibrational spectroscopy.