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Title

Νέo Πορφυρινικό παράγωγο με ομάδα πρόσδεσης για Dye Sensitized Solar Cell εφαρμογές και φωτοκαταλυτική παραγωγή H2.

Alternative Title

A new Zinc-porphyrin derivative with anchoring group for Dye Sensitized Solar Cell applications and photocatalytic H2 production.

Author

Παναγιωτάκης, Στυλιανός

Thesis advisor

Κουτσολέλος, Αθανάσιος

Abstract

Porphyrin derivatives possess synthetic interest, because of the wide range of their uses. In this thesis, conduct a synthesis of a trimeric system TPP(Zn)-DZ-C(CN)(COOH), consisting of Zinc porphyrin for solar radiation absorption. Molecular wire is used for the rapid transfer of electrons from the porphyrin to an anchoring group, which is adsorbed over the surface of ΤiO₂ nanoparticles. Also, for the rapid electron transfer, molecular wire contains conjugation double and triple bonds. Furthermore, long chains with oxygen atoms are useful to avoidance aggregations, so that not transferring electrons from porphyrin to another. Oxygen atoms using to increase compound’s polarity. The third group is electron donor to TiO₂, with strong adsorption on nanoparticles surface. Apart from a synthesis of porphyrin derivative, analyzed the study and characterization methods. For a full description and identification of the trimer, and the intermediates were obtained mass spectra (Maldi-TOF) and nuclear magnetic resonance (NMR) ¹H and ¹³C. Also performed using ultraviolet-visible spectroscopy (UV-Vis), Infrared (IR) and fluorescence. Simultaneously, additional identification of the tripartite properties obtained spectrum of cyclic voltammetry (CV). By diffraction ray crystallography X (X-rays diffraction) acquired the necessary elements for the links, the arrangement of atoms in space and their interaction, the molecule of an intermediate stage. Finally, the synthesis and characterization of porphyrin derivative was achieved with the primary purpose of use as a photosensitizer in dye sensitized solar cell (DSSC) applications and photocatalytic H₂ production.

Language

Greek

Issue date

2016-07-22

Collection

School/Department--School of Sciences and Engineering--Department of Chemistry--Graduate theses

Type of Work--Graduate theses

Views

185

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