Doping of nanoporous glasses by supercritical fluid impregnation of β-diketonate Cu

Thermal quenching of photoluminescence of Eu3+ ions in an Eu(fod)3 complex

“…Adding organometallic compounds to the internal free volume of samples using supercritical media, in particular supercritical carbon dioxide (supercritical CO 2 ), in order to modify their optical properties is a very advanced doping method [1,2]. A still unresolved question is how the matrix of the studied materials affects the spectral properties of the organometallics added to them.…”

“…They are used as the basis for designing new types of integrated optics devices such as optical amplifiers, frequency selectors, three-dimensional memory devices, etc. Furthermore, study of the physical and chemical properties of polymers is of significant interest since those properties can change considerably when specific molecular compounds are added.Adding organometallic compounds to the internal free volume of samples using supercritical media, in particular supercritical carbon dioxide (supercritical CO 2 ), in order to modify their optical properties is a very advanced doping method [1,2]. A still unresolved question is how the matrix of the studied materials affects the spectral properties of the organometallics added to them.…”

Spectra of copper and europium β-diketonates in alcoholic solutions and transparent dielectrics

“…This work is a continuation of the investigations we started on the spectroscopy of organometallic molecules, introduced by impregnation of some polymers and nanoporous glasses using conventional solutions and solutions of supercritical CO 2 [1][2][3][4]9]. Study of these questions is timely and aimed toward development of new photosensitive and thermosensitive materials, for example for designing a medical luminescent thermosensor to be used in laser operations on biological tissues [9].…”

“…We have studied the following organometallic compounds: Eu(fod) 3 , Cu(hfac) 2 , Pr(hfac) 3 , and Ba(hfac) 2 (ALDRICH Chemical Company), which are known to dissolve well both in supercritical CO 2 and in ethyl alcohol. For the comparative studies, we prepared solutions of the organometallic compounds of different concentrations.…”

“…For the comparative studies, we prepared solutions of the organometallic compounds of different concentrations. In the experiments, we used sheets of thickness 1.7 mm made from porous quartz glass (Porous Vycor), analogous to those used in [2][3][4], and sheets of polymethylmethacrylate (PMMA) of thickness 1 mm. The chemical structure of the organometallic compound and the polymer are as follows:…”