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Identifier

000353943

Title

Σύνθεση και χαρακτηρισμός νέων διμερών πορφυρινικών παραγώγων για χρήση σε φωτονικά συστήματα

Alternative Title

Synthesis and characterization of novel dimer porphyrin derivatives for utilization in photonics

Author

Ζερβάκη, Γαλάτεια Εμμ.

Thesis advisor

Κουτσολέλος, Αθανάσιος

Abstract

In the past decade much effort has been devoted to the synthesis and studies of light harvesting molecular systems, comprising two porphyrin units bridged by welldefined π-conjugated spacers at the meso- or β-positions. Due to their unique properties, these conjugated systems are expected to have potential applications in photonics, such as mimic artificial photosynthesis systems, photodynamic therapy or photovoltaics. Especially in photovoltaics, these dimer porphyrin moieties act as great organic dyes, which can be used as sensitizers, due to their great stability and ability to absorb light strongly. In the present study, novel dimer porphyrin moieties have been prepared, where porphyrin units are bridged at the meso- positions. These novel dimer moieties carry an anchoring group, in order to be capable for further modifications. All organic compounds were characterized using NMR spectroscopy (¹H, ¹³C, COSY, HMBC and HMQC), UV-Vis, Fluorescence and Mass (ESI-MS) spectroscopies. Preliminary UVVis and fluorescence experiments showed an electronic communication between porphyrin monomers, making these novel porphyrin moieties promising compounds for charge transfer applications and photonics.

Language

Greek

Subject

charge transfer

dimer porphyrin moieties

electronic communication

organic dyes

photovoltaics

well-defined π-conjugated spacers

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