Optical dispersion control in surfactant-free DNA thin films by vitamin B₂ doping.

ABSTRACT: A new route to systematically control the optical dispersion properties of surfactant-free deoxyribonucleic acid (DNA) thin solid films was developed by doping them with vitamin B₂, also known as riboflavin. Surfactant-free DNA solid films of high optical quality were successfully deposited on various types of substrates by spin coating of aqueous solutions without additional chemical processes, with thicknesses ranging from 18 to 100 nm. Optical properties of the DNA films were investigated by measuring UV-visible-NIR transmission, and their refractive indices were measured using variable-angle spectroscopic ellipsometry. By doping DNA solid films with riboflavin, the refractive index was consistently increased with an index difference Δn ≥ 0.015 in the spectral range from 500

SUBMITTER: Paulson B 

PROVIDER: S-EPMC6008429 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature