Course Details
Subject {L-T-P / C} : CY4302 : Molecular Spectroscopy { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Usharani Subuddhi
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
Course Objectives
- 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
Course Outcomes
On completion of the course, the students shall be able to <br />CO 1: explain the energy states of molecules that can be excited by light, explain the basic principles and properties of a laser and represent a spectrum and the factors affecting <br />CO 2: understand the interaction of microwaves with molecules and the spectral origin and applications of rotational spectroscopy <br />CO 3: understand the molecular vibrations of diatomic and polyatomic molecules effect of rotation on vibrational spectra, and applications of vibrational spectroscopy <br />CO 4: understand the inelastic scattering of light and origin of Raman spectrum learn rotational and vibrational Raman spectra and their applications <br />CO 5: understand electronic spectroscopy in absorption as well as in emission mode understand the photophysical processes and physical properties of electronically excited molecules
Essential Reading
- C. N. Banwell and E. McCash, Fundamentals of Molecular Spectroscopy, Tata McGraw Hill
- J. Michael Hollas, Basic Atomic and Molecular Spectroscopy, Royal Society of Chemistry
Supplementary Reading
- D. N. Sathyanarayana, Handbook of Molecular Spectroscopy, IK International Publishing House
- K. K. Rohatgi-Mukherjee, Fundamentals of Photochemistry, Wiley, New York