98677 - PHOTOCHEMISTRY LABORATORY

Learning outcomes

At the end of the course, the student has acquired knowledge of the advanced methodologies and applications in the fields of lighting (LED and OLED), solar energy conversion and storage, photocatalysis and on the working principles and use of the simplest photochemical techniques both in steady-state and time-resolved regime.

Course contents

Conoscenze e abilità da conseguire

At the end of the course, the student knows the bases of photophysics and photochemistry techniques. In particular, the students is able to: - understand the working principle and use of the simplest photochemical techniques; - use the simplest photophysical and photochemical techniques both in steady-state and time-resolved regime, usually employed to characterize molecular and supramolecular systems.

Contenuti

Prerequisites: knowledge of physical chemistry bases for the description of atoms and molecules. Basic knowledge of symmetry groups and their use in chemistry. Basic knowledge of photochemistry and photophysics, like excited state properties, radiative and radiative processes, bimolecular quenching processes

PART 1: PHOTOCHEMICAL TECHNIQUES (Prof. Marco Montalti)

Fast survey on electronic absorption spectroscopy (technics and instrumentation) - Relation among absorption bands and electronic transitions - Emission spectroscopy - technics and instrumentation - emission and excitation spectra - interferences (light and raman scattering, harmonics) - corrected spectra - emission lifetimes determination (instrumentation)- Relation among emission bands and electronic transitions - Irradiation technics (lamps, filters, actinometers, etc.) - sensititation and quenching - transient absorption spectroscopy (technics and instrumentation).

PART 2: Laboratory of Photochemistry (Dr. Marco Villa)

Spectroscopic characterization of some compounds by practical determination of their absorption and emission spectra, emission lifetimes, photochemical reactivity, reaction and emission quantum yields, actinometers.

 

·As concerns the teaching methods of this course unit, all students must attend Module 1, 2 [https://www.unibo.it/en/services-and-opportunities/health-and-assistance/health-and-safety/online-course-on-health-and-safety-in-study-and-internship-areas] online, while Module 3 on health and safety is to be attended in class or on Microsoft Teams according to the modality chosen by the teacher. Information about Module 3 attendance schedule is available on the website of your degree programme.

Readings/Bibliography

Prof. Marco Montalti

"Chemistry and light", Paul Suppan, Cambridge, The Royal Society of Chemistry, 1994. Copies of the transparencies used in the class

Dr. Marco Villa

" Handbook of Photochemistry”, P. Ceroni Ed., Boca Raton: CRC Press., 2006, ISBN 0-8247-2377-5.

Teaching methods

Prof. Marco Montalti: class lessons: theoretical lessons (2 CFU) will be devoted to the presentation of the various technics usefull to study the photochemical and photophycal behaviour of compounds.

Dr. Marco Villa: the lectures (1 CFU) will present the laboratory exercises; laboratory experiences (1 CFU) are aimed at reaching the manual ability and the necessary knowledge to perform a photochemical study.

As concerns the teaching methods of this course unit, all students must attend Module 1, 2 online, while Module 3 on health and safety is to be attended in class or on Microsoft Teams according to the modality chosen by the teacher. Information about Module 3 attendance schedule is available on the website of your degree programme.

Assessment methods

Oral examination for each of the parts in which the course is divided (Prof. Montalti and Dr. Villa) and reports on the practical lab exercises (Dr. Villa). The examination will verify that the student has acquired knowledge of photochemistry and the capacity to tackle real experimental problems related to photoactive systems.

The final mark is calculated as the weighted average on the basis of the credit numbers of the two parts: Part 1, Prof. Montalti (2 CFU), Part 2, Dr. Villa (2 CFU).

Teaching tools

Power Point slides, blackboard and simple experiments in the classroom.

spectrophotometers, spectrofluorometers, lasers, single photon counting and transient spectroscopy instrumentations for laboratory experiences.

Office hours

See the website of Marco Montalti

See the website of Marco Villa