توظيف مشتقات جديدة للبورفرين لبعض التطبيقات

Functionalization of New Porphyrin Derivatives for Some Applications

ABSTRACT

This work investigates series of new heterocyclic derivatives that synthesized from several porphyrin derivatives (4,4′,4″,4″‘-(porphyrin-5,10,15,20-tetrayl) tetra benzoic acid) compound (3), (4-(10,15,20-tris(3-hydroxyphenyl) porphyrin-5-yl) benzoic acid) compound (8), and (4,4’-(10,20-bis(3-hydroxyphenyl) porphyrin-5,15-diyl) di benzoic acid) compound (12) obtained. These compounds were obtained by reacting Pyrrole with 4-formyl benzoic acid and 3-hydroxy benzaldehyde at different molar ratios. Subsequently, porphyrin derivative-component amides 5a-f and 6a-f were produced by reacting compound (3) with different amine derivatives at different molar ratio via a one-pot, Porphyrin derivative-component amides 9a-d and 11a-e were produced by reacting compound (8) with different amine derivatives different molar ratio via a one-pot. Porphyrin derivative-component amides 13a-f were produced by reacting compound (12) with different amine derivatives at a 1:2 molar ratio via a one-pot.
The graphene quantum dots (GQD) were synthesised from starch as a precursor that has been performed in a single pot using a hydrothermal process. The TiO2/GQD nano-composite was prepared using an in-depth ultrasonic technique to use as an anode in a solar cell. The analysis demonstrated that GQD is nanomaterial with mean crystal size and average particle size equal to 9.25 nm and 11.05 nm, and increase after its composite to 34.39 nm and 79.47 nm respectively.
The synthesis of cadmium ferrite semiconductors (CdFe2O4) from ferric nitrate (Fe(NO3)3.9H2O) with cadmium chloride (CdCl2.2H2O) was performed via a precipitation process in the presence of positive surfactant (CTAB). The TiO2/CdFe2O4 nano-composite was prepared using an in-depth ultrasonic technique to use as an anode in a solar cell. XRD data observed the mean crystal size of CdFe2O4 increases after being its composite from 21.07 nm to 36.96 nm.
In this work, TiO2 with dyes 3 and 8 as anodes was used to analyze dye-sensitive solar cells (DSSCs). In terms of Photoelectric Conversion Efficiency (PEC%) with TiO2, dye 8 performed better than dye 3 and showed the potential for improved solar cell performance. Additionally, DSSCs utilizing a TiO2/CdFe2O4 composite anode explained greater PCE% values than those using a TiO2/GQD anode.
The activity of synthesized materials was investigated as a corrosion inhibitor using carbon steel (CS) as a model for corroded materials. The obtained results showed that the synthesized porphyrins derivatives were effective corrosion inhibitors to 0.1 M hydrochloric acid solution for CS. In the case of the derivative (5c), a maximum inhibition efficiency (IE%) was recorded and it was around 74%.