Fundamentals of rotational, vibrational and electronic spectroscopy of molecular systems in the different aggregation states (gas, liquid and crystalline). Introduction to time and frequency domain non-linear optical spectroscopy, examples of Raman coherent techniques. spectroscopies
J.L. McHale Molecular Spectroscopy (Prentice Hall 1999)
Learning Objectives
Study and elaboration of the fundamentals and methods of the modern optical spectroscopy, both linear and non-linear, employed for the spectroscopic characterization of molecular materials with particular attention devoted to the aggregation state of the material of interest. The laboratory activity concerns with advanced experiments where the students become familiar with research methodologies peculiar of this discipline.
Prerequisites
Courses to be used as requirements (required and/or recommended)
Courses required: Chemical-Physics I with Laboratory
Courses recommended: none
Teaching Methods
Lectures: 32 hours
Laboratory activity: 24 hours
Type of Assessment
5 exam sessions per year
Course program
Black body theory. Electromagnetic radiation and its interaction with matter. Time dependent perturbation theory. Absorption and emission, selection rules, Fermi’s Gold Rule. Lineshape. Time correlation function, FIR and depolarized Raman spectra of liquids. Vibrational and rotational spectroscopy of diatomic molecules. Rotations of polyatomic molecules. Vibrations of polyatomic molecules: classic and quantum mechanical approaches. Symmetry, correlation diagrams and vibrational spectra of molecular crystals,, Electronic spectroscopy of diatomic molecules: vibrational structure e Franck-Condon principle, emission, dissociation. Electronic spectroscopy of polyatomic molecules, vibronic structure. Elements of photochemistry. Raman spectroscopy: classic approach, Kramers-Heisenberg-Dirac relation. Polarization in Raman. Non-linear optical processes: two- and multiphoton absorption, stimulated Raman scattering, coherent Raman techniques.