Bulletin of ANPA
Abstract submitted to ANPA Conference July 14–16, 2023
Volume 5, Number 1
Biological, Medical, Soft Matter and Chemical Physics
Abstract ID: ANPA2023-N00040
Abstract:
ANPA2023-N00040: Investigation on DNA and RNA in search of their electronic application using vibrational spectroscopy
Authors:
- Jose I. Florentino ; Department of Chemistry, Physics and Materials Science, Fayetteville State University, Fayetteville, North Carolina 28301, United States
- Saniya L. Lyles; Department of Chemistry, Physics and Materials Science, Fayetteville State University, Fayetteville, North Carolina 28301, United States
- Chandra M. Adhikari;
- Bhoj R. Gautam ;
DNA and RNA are similar but different from each other in terms of nitrogenous bases (Thymine versus Uracil), but to briefly explain, RNA is a single-stranded molecule with a short chain of nucleotides while DNA is a double-stranded molecule with a longer chain of nucleotides. These biological macromolecules replicate on their own from generation to generation. We investigate the vibrational spectra of both DNA and RNA strands analyzing the density of states (DOS) and dispersion curves within the framework of the harmonic Hamiltonian and Green’s function method. We reveal that the DNA and RNA molecules have band gaps making them possible candidates for biological sensors. Each model is investigated in three (infinite, finite, and cyclic) different configurations. We noticed that the models with lower symmetry show a large gap and a wide forbidden frequency range in all three configurations. The dispersion curves of the more symmetric model, namely the two channel double strands model, do not display the same large gap because its dispersion curves are highly degenerate. In the short DNA and RNA segments (finite and cyclic systems), there are more Van Hove singularities in the DOS curve. Correspondence: cadhikari@uncfsu.edu (C.M. Adhikari)
To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00040