Interactions of nucleic acid bases with catechol: UV studies

Area of Science:

• Biochemistry
• Molecular Biology
• Physical Chemistry

Background:

• Nucleobases (adenine, cytosine, thymine, uracil) are fundamental to DNA and RNA.
• Catechol is a phenolic compound with potential biological relevance.
• Understanding molecular interactions is crucial for various scientific disciplines.

Purpose of the Study:

• To investigate the weak interactions between nucleobases and catechol.
• To identify the formation of charge transfer complexes.
• To determine the thermodynamic parameters and spectral properties of these complexes.

Main Methods:

• UV absorption spectroscopy was employed to study interactions in aqueous solutions.
• 0.1 N HCl was used as the solvent medium.
• Spectroscopic data were analyzed to calculate thermodynamic parameters and molar extinction coefficients.

Main Results:

• UV absorption studies provided evidence for the formation of charge transfer complexes between nucleobases and catechol.
• Complex absorptions were observed in the UV region at longer wavelengths compared to pure components.
• Thermodynamic parameters and molar extinction coefficients were successfully calculated.

Conclusions:

• The formation of charge transfer complexes between nucleobases and catechol is confirmed.
• These interactions alter the UV absorption characteristics of the molecules.
• The findings have potential implications for understanding biological processes involving these compounds.