MODERN DEVELOPMENTS IN STRUCTURAL CHARACTERIZATION OF ORGANIC AND POLYMERIC MATERIALS
Academic year and teacher
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- Versione italiana
- Academic year
- 2022/2023
- Teacher
- MONICA BERTOLDO
- Credits
- 6
- Curriculum
- CHIMICA, MATERIALI ED ENERGIA
- Didactic period
- Secondo Semestre
- SSD
- CHIM/06
Training objectives
- The course aims to provide students with an adequate knowledge of some advanced methods of structural characterization of organic materials with either low or high molecular weight (polymers). Both methods for the analysis of the chemical structure and for the investigation of the organization in solid state will be treated. For the described methods both theoretical foundations and examples of application for solving structural problems will be provided.
At the end of the course the student must be able to propose one or more investigation methods capable of solving a given proposed structural problem. Prerequisites
- Basic knowledge of organic chemistry and basic methods of spectroscopic characterization of materials (FT-IR and 1H NMR) are required
Course programme
- Over the course of 48 hours the following topics will be covered:
• the structure of materials: chemical structure and organization in the solid state
• light-matter interactions
• vibrational spectroscopy
• infrared transmission and surface spectroscopy (ATR, IRRAS, RS, etc. ..)
• classical Raman spectroscopy and derived techniques
• nuclear magnetic resonance (NMR): vector description
• 1H NMR spectroscopy
• 13C NMR spectroscopy
• Magnetization relaxation: theory and determination of the characteristic parameters (T1 and T2)
• Set up an NMR experiment in practice
• Pulsed NMR in Fourier transform
• Description and analysis of the main one-dimensional pulse sequences
• Genesis of a two-dimensional NMR spectrum (NMR-2D)
• Description and analysis of the main 2D-NMR sequences
• Examples of the resolution of chemical structures with the aid of 2D NMR spectra
• Diffusion Order Spectroscopy (DOSY NMR)
• Solid state nuclear magnetic resonance (SS NMR): quantum mechanical description
• High resolution SS NMR
• Direct and indirect methods in SS NMR
• SS NMR applications
• NMR analysis applied to polymers Didactic methods
- The course will be held in the classroom on material provided mainly by the teacher.
Learning assessment procedures
- The exam consists of an oral test in two parts. In the first part, the student must present an example taken from the literature on the analysis of a material with one or more techniques covered in the course. The example must be agreed in advance with the teacher. In the second part, the student's ability to critically propose the most suitable method of analysis to solve a proposed problem of structure will be verified.
Reference texts
- Teacher’s handouts
R. M. Silverstein, F. X, Webster;
Spectrometric identification of organic compounds.
Ed. John Wiley & Sons, Inc.
Italian edition:
Identificazione spettroscopica di composti organici.
Seconda Edizione
Casa Editrice Ambrosiana.
