Abstract

INFRARED SPECTROSCOPY: PRINCIPLE AND APPLICATIONS

Dr. Rajeev Ramachandra Kolgi*

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Abstract

The conventional method of finding the structure of an organic compound was time consuming and not always 100% accurate. Organic chemistry has been revolutionized in the past 50 years by the use of spectroscopic methods for the determination of structure. Spectroscopic methods are easier and faster and provide more information about molecular structure. These methods are non destructive and entire sample can be recovered. All organic compounds interact with electromagnetic radiation. Molecules absorb only the wavelength of radiation with exactly the energy necessary for the transition. By measuring the absorption spectra of compounds, the structure of unknown compounds can be determined. This review explores the basic principle and applications of IR spectroscopy with respect to organic compounds, polymers, drugs like paracetamol and biomolecules such as carbohydrates, proteins and lipids.

Keywords: Electromagnetic radiation, IR spectroscopy, Biomolecules. Polymers.