66190 - Physical Chemistry of the Solid State M

Academic Year 2018/2019

  • Teaching Mode: Traditional lectures
  • Campus: Bologna
  • Corso: Second cycle degree programme (LM) in Industrial Chemistry (cod. 0884)

    Also valid for Second cycle degree programme (LM) in Industrial Chemistry (cod. 0884)

Course contents

Classification of the states of matter. The solid crystal state. Binding in crystals. Crystal structure and unit cells; Bravais lattices. The crystal symmetry; a structural view of crystal symmetry: bottom-up crystallography in molecular crystals; mathematical representation of crystal symmetry; reciprocal lattice; Bloch functions.

The electronic structure of molecular solids in a simplified form. The band structure; model systems; DOS.

Excited states of aggregates of molecules; Davydov splitting and Mini-Excitons; linear molecular crystals; Frenkel Excitons; physical dimers; Excimers; Band structure; Charge transfer excitons (CT); Exciton processes; Energy transfer.

Dielectric theory of Frenkel excitons. the local field method; dielectric tensor of cubic crystals; dielectric tensor of organic anisotropic crystals

Vibrations in solids: lattice dynamics; classic description of vibrations of a one dimensional monatomic chain; vibrations of a one dimensional biatomic chain; acoustic and optic branches; extension to a tridimensional crystal. Vibrations in molecular crystals and quantisation of the vibrational energy: Phonons. Quasi particles.

Scattering: phonon-photon scattering and elastic and anelastic processes; X-ray diffraction; phonon-neutron scattering; phonon density of states.

Specific Heat of Solids: Boltzmann, Einstein, and Debye

Readings/Bibliography

The Oxford Solid State Basics - Steven H. Simon Oxford University Press

Molecular Aggregation Angelo Gavezzotti - IUCR book series Oxford University Press

Organic Molecular Solids - Markus Schwoerer, Hans Christoph Wolf Wiley-VCH

Electronic Processes in Organic Semiconductors -Anna Köhler and
Heinz Bässler , Wiley-VCH

Assessment methods

Oral Exam, with two questions and the discussion of a literature review chosen by the student.

Office hours

See the website of Elisabetta Venuti