Fundamentals of photochemistry and photoaging 0600-S1-ChK-PFiF

Lecture:
The lecture contains information on the nature of electromagnetic radiation, the interaction of light with matter. The basic concepts and photochemical laws, issues related to the absorption of radiation and excited states, as well as processes of quenching of excited states, fluorescence and phosphorescence, Jabłoński diagram, quantum yields, processes of energy transfer and electrons will be discussed. Examples of photochemical reactions, the influence of ultraviolet radiation on nature and humans, the application of UV radiation and photochemical reactions in various fields of life and industry will be presented. Artificial sources of UV radiation, methods of investigating photochemical reactions and actinometry will be discussed. Particular emphasis will be placed on photodegradation processes (including photoaging of skin and photodegradation of cosmetics) and methods to prevent these phenomena.

Lab:
Laboratory exercises are devoted to detecting singlet oxygen, studying the effects of UV radiation on dye decay in the presence and absence of semiconductors, photochromic investigations in azo compounds, investigations of photochemical changes in pyrimidine and purine bases, photosensitization and photostabilization.

Total student workload

1. 15h lecture, 30h laboratory, 5h consultations, ie 50 contact hours, 2. 10h individual work, 3. 15h time required for preparation in the assessment process, 4. total student workload - 75h.

Learning outcomes - knowledge

student: W1: describes the influence of electromagnetic radiation on matter - K_W01 W2: recognizes photophysical and photochemical processes - K_W01 W3: defines the quantum efficiency of energy and electron transfer processes and quenching processes - K_W01 W4: classifies photosensitive compounds, describes their properties and applications - K_W01 In: 5: describes the processes of photoaging and photodegradation and methods of preventing them - K_W01, K_W12 W6: knows the basic radiation protection compounds - K_W12

Learning outcomes - skills

student: U1: performs simple photochemical experiments - K_U03 U2: correctly interprets the effects of UV radiation on matter - K_U02, K_U03 U3: safely uses UV radiation sources – K_U03 U4: can determine the photostability of substances and examine the course of the photodegradation process - K_U03 U5: can measure the intensity of UV radiation using chemical and electronic actinometers - K_U03

Learning outcomes - social competencies

student: K1: demonstrates the ability to think analytically - K_K01 K2: independently sees relationships and draws conclusions correctly - K_K07 K3: works systematically and consistently, meets deadlines - K_K06 K4: knows and follows the rules and standards applicable in the photochemistry laboratory - K_K08

Teaching methods

Lecture: Lecture with multimedia presentations Lab: Independent laboratory work.

Observation/demonstration teaching methods

- display

Expository teaching methods

- informative (conventional) lecture

Exploratory teaching methods

- experimental
- laboratory

Type of course

compulsory course

Prerequisites

Basic knowledge of general, organic and physical chemistry.

Course coordinators

Term 2023/24L:

Term 2021/22L:

Term 2022/23L:

Term 2024/25L:

Assessment criteria

Lecture: Written exam - W1-W6.
Laboratory: credit on the basis of performed laboratory exercises and reports
U15, U5, K1, K3, K4, test - W2, W4, W5, U1, U2, U4, K1 , U2, U4, K1, K2.

Practical placement

not applicable

Bibliography

List of basic literature:
1. S. Paszyc, Podstawy fotochemii, PWN, Warszawa 1992.
2. J.A. Baltrop, J.D. Coyle, Fotochemia-podstawy, PWN, Warszawa 1987.
3. P. Suppan, Chemia i światło, PWN, Warszawa 1997.
4. Praca zbiorowa, J. Pączkowski (red.), Fotochemia polimerów, Wydawnictwo Uniwersytetu Mikołaja Kopernika, Toruń 2003.
5. Praca zbiorowa, J. Najbar, A. Turek (red.), Fotochemia i spektroskopia optyczna. Ćwiczenia laboratoryjne, PWN, Warszawa 2009.
6. W. Schnabel, Polymers and Light. Fundamentals and Technical Applications, Wiley-VCH, Weinheim 2007.

List of supplementary literature:
1. Praca zbiorowa, B. Marciniak (red.), Metody badania mechanizmów reakcji fotochemicznych, Wydawnictwo UAM, Poznań 1999.
2. G. Wenska, Fotochemia środowiska, Wydawnictwo UAM, Poznań 1997.
3. Z. Stasicka, Procesy fotochemiczne w środowisku, Wydawnictwo UJ, Kraków 2001.
4. J. Guillet, Polymer Photophysics and Photochemistry, Cambridge University Press, Cambridge 1987.
5. N.J.Turro, V. Ramamurthy, J. C. Scaiano, Modern molecular photochemistry of organic molecules, University Science Books, Sausalito 2010.

Additional information

Additional information (registration calendar, class conductors, localization and schedules of classes), might be available in the USOSweb system:

Description of 0600-S1-ChK-PFiF in USOSweb