Chemistry Research Journal, 2024, 9(2):70-76 Chemistry Research Journal 70 Available online www.chemrj.org Research Article ISSN: 2455-8990 CODEN(USA): CRJHA5 Exploring Functional Groups and Molecular Structures: A Comprehensive Analysis using FTIR Spectroscopy Iqtiar Md Siddique Department of Industrial, Manufacturing and Systems Engineering, the University of Texas at EL Paso, US. E-mail: iqtiar.siddique@gmail.com DOI: https://doi.org/10.5281/zenodo.11281698 Abstract Fourier Transform Infrared (FTIR) spectroscopy stands as a cornerstone analytical technique across scientific domains, facilitating comprehensive analyses of molecular structures and functional groups within diverse compounds. Through the measurement of infrared radiation absorption, FTIR spectroscopy enables the identification of characteristic absorption peaks, unveiling specific functional groups present in samples. This versatile methodology not only aids in qualitative and quantitative analysis but also extends to the exploration of molecular interactions, conformational changes, and chemical reactions, offering profound insights into various scientific realms, including chemistry, biology, pharmacy, and material science. Moreover, advancements in FTIR instrumentation, such as attenuated total reflectance (ATR) and micro spectroscopy, have broadened its utility, enabling in situ and microscopic analyses. In essence, FTIR spectroscopy emerges as an indispensable tool for characterizing molecular structures and elucidating material properties, contributing significantly to both academic research and industrial applications. Keywords: FTIR Spectroscopy, Functional Groups, Molecular Structures Introduction Fourier Transform Infrared (FTIR) spectroscopy stands as a cornerstone in modern analytical chemistry and scientific research, wielding its power to decipher the intricate molecular structures and functional groups residing within a vast spectrum of compounds. Rooted in the principles of molecular interaction with infrared radiation, FTIR spectroscopy offers a window into the molecular world, providing invaluable insights into the chemical composition, bonding arrangements, and structural intricacies of materials. Its robustness, versatility, and wide- ranging applicability have elevated FTIR spectroscopy to the status of an indispensable analytical tool across an expansive array of scientific disciplines. From the realms of chemistry, materials science, and biology to pharmaceuticals, environmental science, and beyond, FTIR spectroscopy finds itself woven into the fabric of scientific inquiry, driving discoveries and innovations on multiple fronts. In the domain of chemistry, FTIR spectroscopy emerges as a linchpin technique, enabling chemists to unravel the mysteries of molecular architecture with unparalleled precision. From the identification and characterization of chemical compounds to the elucidation of reaction mechanisms and the analysis of intricate mixtures, FTIR spectroscopy serves as a guiding light, illuminating the pathways of chemical discovery and innovation. Meanwhile, in materials science, FTIR spectroscopy assumes a pivotal role in the quest to understand and engineer the materials that underpin modern technologies and industries. Whether it's the characterization of polymers, the determination