Photochemistry
Code
1530
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Química
Credits
6.0
Teacher in charge
Fernando Jorge da Silva Pina
Weekly hours
4
Teaching language
Português
Objectives
The students should gain knowledge about the fundamental aspects of Photochemistry: formation of excited states, decay processes, fluorescence and phosphorescence, bimolecular processes, photochemical reactivity, energy and electron transfer, and supramolecular chemistry.
In the laboratory, students will get skills on absorption and emission spectroscopies, both steady-state and time resolved.
Prerequisites
Students should have knowledge on Physical Chemistry, Organic Chemistry and Inorganic Chemistry.
Subject matter
Photochemistry: Absorption and emission of light. Geometry, dipole moment, redox potential and pKa of excited states. Photophysical processes of excited states. energy transfer, electron transfer and proton transfer in the excited state. Photo-reduction, photo-oxidation, cyclo adition reactions. Wodward-Hoffmann rules for electrocyclic reactions. Chemiluminescence. Solar energy conversion cycles, photocatalysis, photochromism. Mechanism of vision, photosynthesis.
Supramolecular Chemistry: Molecular recognition. Self-assembly and self-organization. Programed molecules, programed supramolecular systems. Self-assembling of multicomponent systems. Self-assembly based on hydrogen bonding. Supramolecular catalysis. Molecular devices. Dendrimers.
Bibliography
1. N. J. Turro, J. C. Scaiano, V. P Ramamurthy, “Principles of Molecular Photochemistry: An Introduction”, University Science Books, 2008.
2. Supramolecular Chemistry: Concepts and Perspectives, Jean-Marie Lehn, VCH, Weinheim, Germany, 1995.
3. Supramolecular Photochemistry, Vincenzo Balzani, Franco Scandola, Ellis Horwood, Chichester, UK, 1987
Teaching method
The program of Photochemistry comprises 28 hours of lectures (theory and exercises), 20 hours of lab work, and a seminar (MSc level).
Evaluation method
For undergraduate students, the final grade (FG) is obtained from FG=0.5xT+0.5xP; for MSc students, FG=0.45xT+0.40xP+0.15xS, where T is the grade from two tests or a final exam, P is the grade from lab reports and S is the grade from a seminar presentation and discussion.