A renormalization approach to describe charge transport in quasiperiodic dangling backbone ladder (DBL)-DNA molecules

作者：Sarmento R G; Fulco U L; Albuquerque E L^*; Caetano E W S; Freire V N

来源：Physics Letters A, 2011, 375(45): 3993-3996.

DOI：10.1016/j.physleta.2011.09.030

We study the charge transport properties of a dangling backbone ladder (DBL)-DNA molecule focusing on a quasiperiodic arrangement of its constituent nucleotides forming a Rudin-Shapiro (RS) and Fibonacci (FB) Poly (CG) sequences, as well as a natural DNA sequence (Ch22) for the sake of comparison. Making use of a one-step renormalization process, the DBL-DNA molecule is modeled in terms of a one-dimensional tight-binding Hamiltonian to investigate its transmissivity and current-voltage (I-V) profiles. Beyond the semiconductor I-V characteristics, a striking similarity between the electronic transport properties of the RS quasiperiodic structure and the natural DNA sequence was found.

• 出版日期2011-10-31