Photochemistry
A.Y. 2018/2019
Learning objectives
Comprensione della produzione di stati elettronici eccitati e dei processi fotochimici e fotofisici. Informazioni sulle tecniche dei processi fotoindotti. Comprensione dello sviluppo dei processi fotochimici che avvengono in natura, dei principi della fotoproduzione e fotostabilizzazione di polimeri, nonché dei principi e delle potenzialità della foto(elettro)catalisi.
Expected learning outcomes
Padronanza dei concetti di interazione luce-materia, delle proprietà degli stati elettronici eccitati e dei principi e applicazioni di processi fotoindotti.
Lesson period: First semester
Assessment methods: Esame
Assessment result: voto verbalizzato in trentesimi
Single course
This course cannot be attended as a single course. Please check our list of single courses to find the ones available for enrolment.
Course syllabus and organization
Single session
Lesson period
First semester
Course syllabus
Production and properties of electronic excites states. Radiation absorption and electronic states of molecules. The Jablonski diagram. Lifetime, energy, geometry and acid-base properties of excited states, solvent effects.
Photophysical and photochemical deactivation paths. Vibrational relaxation, radiative and non-radiative transitions, kinetics of excited states quenching, excimers and exciplexes. Kinetics and mechanism of photochemical reactions.
Experimental techniques. Conventional light sources, actinometry, LEDs, lasers, luminescence spectroscopy, transient absorption and time-resolved emission spectroscopy.
Photochemical processes in nature. Photochemical reactions in the atmosphere and stratosphere. Photochemical smog. Photosynthesis, the vision process.
Photocatalysis and other applications. Photoelectrochemical processes on semiconductors, photocatalysis for solar energy conversion and for the degradation of water and air pollutants. Photopolymerization, photoinitiators and mechanism, photoinduced degradation and stabilization of polymers. Photochromism, photochemical syntheses.
Reference material
- Gilbert, J. Baggott, Essentials of Molecular Photochemistry, Blackwell, 1991
- M. Klessinger, J. Michl, Excited States and Photochemistry of Organic Molecules, VCH, 1995
- R.P. Wayne, Principles and Applications of Photochemistry, Oxford University Press, 1988.
Assessment methods: Oral
The exam consists in an interview aimed at testing the skills acquired by the student on the subjects developed in the course.
Photophysical and photochemical deactivation paths. Vibrational relaxation, radiative and non-radiative transitions, kinetics of excited states quenching, excimers and exciplexes. Kinetics and mechanism of photochemical reactions.
Experimental techniques. Conventional light sources, actinometry, LEDs, lasers, luminescence spectroscopy, transient absorption and time-resolved emission spectroscopy.
Photochemical processes in nature. Photochemical reactions in the atmosphere and stratosphere. Photochemical smog. Photosynthesis, the vision process.
Photocatalysis and other applications. Photoelectrochemical processes on semiconductors, photocatalysis for solar energy conversion and for the degradation of water and air pollutants. Photopolymerization, photoinitiators and mechanism, photoinduced degradation and stabilization of polymers. Photochromism, photochemical syntheses.
Reference material
- Gilbert, J. Baggott, Essentials of Molecular Photochemistry, Blackwell, 1991
- M. Klessinger, J. Michl, Excited States and Photochemistry of Organic Molecules, VCH, 1995
- R.P. Wayne, Principles and Applications of Photochemistry, Oxford University Press, 1988.
Assessment methods: Oral
The exam consists in an interview aimed at testing the skills acquired by the student on the subjects developed in the course.
CHIM/02 - PHYSICAL CHEMISTRY - University credits: 6
Lessons: 48 hours
Professor:
Selli Elena