New porphyrins: synthesis, characterization, and computational studies.

Area of Science:

• Organic Chemistry
• Materials Science
• Computational Chemistry

Background:

• Porphyrins are versatile macrocyclic compounds with diverse applications.
• Developing new porphyrin derivatives with tunable electronic properties is crucial for advanced materials.

Purpose of the Study:

• To synthesize novel trans-A2B2-porphyrins with phenyl substitutions.
• To investigate their structural, electronic, and aromatic properties using experimental and computational methods.
• To evaluate their potential for solar cell and photocatalysis applications.

Main Methods:

• Multi-step synthesis starting from 4-methylphthalic acid.
• Characterization using various NMR techniques (1H, 13C, 19F, 1H-1H COSY) and MALDI-TOF mass spectrometry.
• Computational studies on structural features, electronic energy, energy gaps, and aromaticity.

Main Results:

• Successful synthesis and characterization of new trans-A2B2-porphyrins.
• Identification of small energy band gaps, particularly in N-hydroxyphthalimide-functionalized porphyrins.
• Observed inverse relationship between aromaticity and electronic energy in fluorinated and non-fluorinated porphyrin series.

Conclusions:

• The synthesized porphyrins exhibit properties suitable for solar cell and photocatalysis applications.
• Computational analysis provides insights into structure-property relationships.
• The study highlights the potential of these novel porphyrins in renewable energy technologies.