Influence of continuous wave laser light at 532 nm on transmittance and on photoluminescence of DNA-CTMA-RhB solutions

Adrian Petris; Petronela Gheorghe; Ileana Rau

doi:10.1016/j.heliyon.2023.e20410

Influence of continuous wave laser light at 532 nm on transmittance and on photoluminescence of DNA-CTMA-RhB solutions

Heliyon. 2023 Sep 23;9(10):e20410. doi: 10.1016/j.heliyon.2023.e20410. eCollection 2023 Oct.

Authors

Adrian Petris¹, Petronela Gheorghe¹, Ileana Rau²

Affiliations

¹ National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, 077125, Magurele, Romania.
² National University of Science and Technology Politehnica Bucharest, Faculty of Chemical Engineering and Biotechnologies, 1-7 Polizu Str, 011061, Bucharest, Romania.

Abstract

Recent results obtained in our experimental investigation on the influence of the illumination with continuous wave (c.w.) laser light at 532 nm on the transmittance at this wavelength and on the photoluminescence of the DNA-CTMA-RhB in butanol compound are reported. The temporal dependence of absorption changes induced by c. w. light at 532 nm in DNA-CTMA-RhB in butanol solution, and, for comparison, in RhB in butanol solution, is investigated experimentally and analyzed in order to assess the effect of DNA-CTMA on this light-induced process. The evolution in time of the peak's amplitude and wavelength of the photoluminescence spectra in solutions of DNA-CTMA-RhB in butanol, during their excitation with laser light at 532 nm wavelength has been also investigated and discussed.

Keywords: DNA; Photobleaching; Photoluminescence; Rhodamine B.