Influence of overlapping between the fluorescence spectra of dye molecules and the spectrum of plasmon absorption of silver nanoparticles on the luminescence of laser dyes in ethyl alcohol
Journal Title: Eurasian journal of physics and functional materials - Year 2018, Vol 2, Issue 1
Abstract
In the present work, the influence of the degree of overlapping between the plasmon absorption spectrum of silver nanoparticles and the luminescence spectra of P6Zh, phenalamine 160, and oxazine 17 on their luminescence was studied. With the addition of Ag NPs to the ethanol solution, the absorption of dyes depends on the concentration of Ag nanoparticles. The overlapping integrals between the plasmon absorption spectrum of Ag NPs and the absorption spectra of the studied dyes were 24.2 for P6J, 52 for phenalemine 160 and 38.5 for oxazine 17, respectively. The optical density in the maximum increased 1.6-fold for P6Zh, 1.4-fold – for phenaleamine 160 and 1.2-fold – for oxazine 17. It was established that for P6Zh the fluorescence intensity reaches its maximum value at a concentration of C = 2 Ч10−6 mol/l, for phenalemine 160 – at C = 5 Ч10−6 mol/l, and for oxazine 17 at C = 10 −5 mol/l. The intensity of fluorescence of P6Zh increased 1.4 times, phenalemine 160 –1.2 times, and for oksazine 17 – 1.1 times. The generation threshold for P6Zh showed, on average, a tenfold decrease, for phenalamine 160 – it was a 1.4-fold decrease, and for oxazine 17 – a 1.2-fold decrease. The luminescence kinetics of solutions in ethanol in the presence of silver NPs decreased by τ ≈ 1 ns for P6Zh, τ ≈ 0.4 ns for phenalemine 160 and τ ≈ 0.1 ns for oxazine 17.
Authors and Affiliations
A. K. Aimukhanov, N. Kh. Ibrayev
Keywords
Related Articles
- EP ID EP304951
- DOI 10.29317/ejpfm.2018020105
- Views 98
- Downloads 0
Different methods of correcting the readings of the DVGN-01 albedo neutron dosimeter placed behind the IBR-2M protection
The paper presents the results of correction of readings of DVBN-01 albedo dosimeters behind IBR-2M protection, the Neutron Physics Laboratory of the Joint Institute for Nuclear Research (JINR), Dubna, by various methods...
Study of the effect of irradiation on nitride ceramic materials
The paper presents the results of a study of the effect of proton and ion radiation on structural changes in nitride ceramics, which have a high potential for using as a structural material for GenIV nuclear reactors. Pr...
Metal-insulator transitions and nanoscale phase separation in various underdoped cuprates
We demonstrate that the unconventional electron-phonon interactions, charge inhomogeneity and charge ordering in underdoped cuprates play an important role in metal-insulator transitions and nanoscale phase separation. I...
Current status of the new fragment separator ACCULINNA-2 and the first-day experiments
The commissioning of the new fragment separator ACCULINNA-2 at FLNR JINR is accomplished. The separator is destined to expand the possibilities in studies of dripline nuclei performed with the exotic secondary radioactiv...
Ecologically safe experimental purpose application of microwaves in the treatment of chronic neurological disorders: optimization and risks
Current paper describes the experimental dual-purpose application of microwaves in a controlled clinical trial on optimizing therapy for chronic neurological disorders. As a part of integrated treatment, low-intensity mi...