The Analytical Possibilities of FT-IR Spectroscopy Powered by Vibrating Molecules

Abstract

This paper discusses the state of advancement in the development of spectroscopic methods based on the use of mid (proper) infrared radiation in the context of applications in various fields of science and technology. The authors drew attention to the most important solutions specific to both spectroscopy itself (ATR technique) and chemometric data processing tools (PCA and PLS models). The objective of the current paper is to collect and consistently present information on various aspects of FT-IR spectroscopy, which is not only a well-known and well-established method but is also continuously developing. The innovative aspect of the current review is to show FT-IR’s great versatility that allows its applications to solve and explain issues from both the scientific domain (e.g., hydrogen bonds) and practical ones (e.g., technological processes, medicine, environmental protection, and food analysis). Particular attention was paid to the issue of hydrogen bonds as key non-covalent interactions, conditioning the existence of living matter and determining the number of physicochemical properties of various materials. Since the role of FT-IR spectroscopy in the field of hydrogen bond research has great significance, a historical outline of the most important qualitative and quantitative hydrogen bond theories is provided. In addition, research on selected unconventional spectral effects resulting from the substitution of protons with deuterons in hydrogen bridges is presented. The state-of-the-art and originality of the current review are that it presents a combination of uses of FT-IR spectroscopy to explain the way molecules vibrate and the effects of those vibrations on macroscopic properties, hence practical applications of given substances.

Bioactive silver nanoparticles fabricated using Lasiurus scindicus and Panicum turgidum seed extracts: anticancer and antibacterial efficiency

“…FTIR is known as an analytical tool for the detection of inorganic and organic compounds from varied sources 32 . The observed spectrum at 1620–1680 cm −1 could be related to C=C (Alkenyl stretch) and those at 3200–3400 cm −1 representing the H-bonded OH stretch, Hydroxy group 33 .…”

Applications of Fourier Transform-Infrared spectroscopy in microbial cell biology and environmental microbiology: advances, challenges, and future perspectives

“…This spectrum can be used to identify the functional groups and molecular structures present in the sample, essentially providing a "fingerprint" that can be used for qualitative and quantitative analysis. FT-IR spectroscopy can be used to study a diverse array of specimens, including solids, liquids, and gases, and it has applications across various scientific domains, including chemistry, physics, materials science, and biology (Griffiths, 1983;Koczoń et al, 2023).…”

“…Fourier Transform-Infrared (FTIR) spectroscopy has emerged as an exceptionally versatile and indispensable tool, revolutionizing molecular analysis across a spectrum of scientific domains, including microbiology (Beekes et al, 2007;Baker et al, 2014;Zarnowiec et al, 2015;Nandiyanto et al, 2019;He et al, 2022;Koczoń et al, 2023). This analytical technique operates on the principle that molecules absorb specific frequencies of infrared light, which correspond to the vibrational frequencies of their chemical bonds (Griffiths, 1983;Nandiyanto et al, 2019;He et al, 2022;Lilo et al, 2022;Weber et al, 2023).…”

In Situ Preparation of 0D/2D Zn-Ag-In-S Quantum Dots/RGO Heterojunctions for Efficient Photocatalytic Hydrogen Production

“…An in situ growth method was used. As shown in Figure 3a,b, the infrared absorption band at 3648-3299 cm −1 has been identified as the tensile vibration mode of the hydrogen bonds in the compounds [26,27]. The absorption peaks at 1610.2, 1388.5, and 1088 (1015.5) cm −1 are assigned to the tensile vibration modes of C=O, O-H, and C-O, respectively [28][29][30].…”