Syllabus

Module 1:
Introduction: The electromagnetic radiation, Effect of radiation on molecules, Absorption and emission spectra, Einstein’s treatment, Concept of LASER, Types of spectroscopy, Representation of spectra and factors affecting the spectra. 5 hrs
Module 2
Microwave spectroscopy: Rotation of molecules, rotational spectra, diatomic and polyatomic molecules, instrumentation, analysis by microwave spectroscopy. 5hrs
Module 3
Infra-red spectroscopy: The vibrating diatomic molecules, the interaction of vibration and rotation, the vibrations of polyatomic molecules, impact of rotation on polyatomic molecules, analysis by IR, instrumentation. 6hrs
Module 4
Raman Spectroscopy: Polarization of light and the Raman Effect, pure rotational Raman and vibrational Raman spectra, structure determination from combined Raman and IR spectroscopy for simple molecules 6hrs
Module 5
Electronic spectroscopy: Electronic spectra of diatomic molecules, vibrational coarse structure, progressions, intensity of vibrational-electronic spectra: the Franck-Condon Principle, spectroscopic and equilibrium dissociation energies, rotational fine structure of electronic-vibration Transitions, photophysics of radiative and non-radiative transitions, fluorescence and phosphorescence, factors affecting emission, excimers and exciplexes, static and dynamic quenching, Stern-Volmer analysis, Physical properties of electronically excited molecules (acidity and dipole moments). 15hrs

The aim of the course is to enable students to acquire understanding of how light interacts with molecules and the changes it brings about.

The students will learn the basis of different optical spectroscopy and their use to examine the molecular structure.

The students will recognize the relationship between molecular spectra and molecular structure.

Finally, the course provides specific study of the applications of molecular spectroscopy to different areas of science.

On completion of the course, the students shall be able to
CO 1: acquire knowledge on how light interacts with molecules and the changes it brings about and also understand the different factors affecting the spectral profile
CO 2: understand the fundamental principles behind various types of molecular spectroscopic techniques, including absorption, emission, scattering and the phenomenon of stimulated emission leading to LASER
CO 3: gain knowledge of various spectroscopy methods such as microwave, IR, Raman, UV-Vis, Fluorescence, and Phosphorescence, including the selection rules governing each spectroscopic technique
CO 4: analyze and interpret molecular spectra and relate spectral features to molecular structure, functional groups, and chemical environments, and utilizing spectroscopy for qualitative and quantitative analysis
CO 5: to assess the suitability, advantages, and limitations of different spectroscopic techniques in various fields

C. N. Banwell and E. McCash, Fundamentals of Molecular Spectroscopy, Tata McGraw Hill

J. Michael Hollas, Modern Spectroscopy, Royal Society of Chemistry

D. N. Sathyanarayana, Handbook of Molecular Spectroscopy, Wiley

K. K. Rohatgi-Mukherjee, Fundamentals of Photochemistry, Wiley, New York