In this thesis the vibrational spectroscopic properties of two oligofurans families are studied: one of unsubstituted molecules (4F, 6F and 8F) and one of molecules substituted with alkyl chains (4F-2C6, 6F-2C6, 8F-2C6 and 16F- 6C6) via FT-Raman and FT-IR, evaluating also the effect of the temperature on the experimental spectra of some of these molecules. In addition to this experimental study, DFT calculations on the substituted molecules series and on the unsubstituted 6F molecule at the two B3LYP / 6-31G** and BHLYP / 6-31G** levels of theory are carried out, in order to study: equilibrium structures, HOMO-LUMO gap and Raman and Ir frequency spectra, seeking a theoretical validation of the experimental results.
In questa tesi vengono studiate le proprietà spettroscopiche vibrazionali di due famiglie di oligofurani: una di molecole non-sostituite (4F, 6F e 8F) e una di molecole sostituite con catene alchiliche (4F-2C6, 6F-2C6, 8F-2C6 e 16F-6C6) tramite FT-Raman e FT-IR, valutando anche l'effetto della temperatura sugli spettri sperimentali di alcune di queste molecole. Inoltre vengono effettuati calcoli DFT sulla serie di molecole sostituite e sulla molecola non-sostituita 6F sui due livelli teorici B3LYP/6-31G** e BHLYP/6-31G** in modo da studiare: strutture di equilibrio, gap HOMO-LUMO e spettri di frequenza Raman e Ir, cercando una validazione teorica dei risultati sperimentali.
Vibrational spectroscopy of oligofurans : a combined experimental and computational investigation
TROTTA, FABIO
2016/2017
Abstract
In this thesis the vibrational spectroscopic properties of two oligofurans families are studied: one of unsubstituted molecules (4F, 6F and 8F) and one of molecules substituted with alkyl chains (4F-2C6, 6F-2C6, 8F-2C6 and 16F- 6C6) via FT-Raman and FT-IR, evaluating also the effect of the temperature on the experimental spectra of some of these molecules. In addition to this experimental study, DFT calculations on the substituted molecules series and on the unsubstituted 6F molecule at the two B3LYP / 6-31G** and BHLYP / 6-31G** levels of theory are carried out, in order to study: equilibrium structures, HOMO-LUMO gap and Raman and Ir frequency spectra, seeking a theoretical validation of the experimental results.File | Dimensione | Formato | |
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Vibrational spectroscopy of oligofurans_a combined experimental and computational investigation.pdf
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Descrizione: Tesi Fabio Trotta
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https://hdl.handle.net/10589/138154