Improved Optical Performance Analysis of YAG:Ce, NCS:Sm, and CAO:Mn Phosphors Physically Integrated with Metal-Organic Frameworks.

This research presents a thorough examination of the optical properties and performance enhancement strategies of synthesized phosphors, namely, yttrium aluminum garnet doped with cerium (YAG:Ce), sodium calcium silicate with samarium (NCS:Sm), and calcium aluminate oxide doped with manganese (CAO:Mn). The study delves into the synthesis processes of the phosphors, illumination of the crystal structures, and enhancement of luminescent characteristics. Additionally, the paper extends to the synthesis and analysis of {[Cu(μ-dmg)(im)]·3HO} (PKY159), and the coordination polymer (CP) was added the phosphors to explore a novel approach for enhanced optical performance.

Sensitivity to NH Vapor: Synthesis and Characterization of Five New Coordination Polymers Based on 2,2-Dimethylglutaric Acid and Bis(triazole)-Derived Ligands.

Five new coordination polymers (CPs) were obtained as a result of hydrothermal reactions of 2,2-dimethylglutaric acid (Hdmg) and 1,4-bis(1-1,2,4-triazol-1-ylmethyl)benzene ()/1,2-bis(1-1,2,4-triazol-1-ylmethyl)benzene () ligands with some metal ions [Co(μ-dmg)(μ-obtx)] (), [Zn(μ-dmg)(μ-obtx)] (), [Cd(μ-dmg)(μ-obtx)] (), [Co(μ-dmg)(μ-pbtx)] (), and [Cd(μ-dmg)(HO)(μ-pbtx)] (). All of the compounds were characterized by elemental analysis, FT-IR spectroscopy, single-crystal X-ray diffraction, powder X-ray diffraction, and thermal analysis techniques. The single-crystal X-ray studies show that all compounds exhibit 2D layer structures.

Effect on Improving CO Sensor Properties: Combination of HPTS and γ-FeO@ZnO Bioactive Glass.

8-Hydroxypyrene-1,3,6-trisulfonic acid (HPTS) dye, a fluorescent dye often used as a pH indicator, is embedded within the bioactive glass matrix and undergoes changes in its fluorescent properties when exposed to carbon dioxide (CO). The aim of the current study is to investigate the use of bioactive glass (BG) particles containing γ-FeO@ZnO to enhance the CO sensitivity of HPTS. X-ray diffraction, Fourier transform infrared, scanning electron microscopy, and photoluminescence spectroscopies were used to characterize the sol-gel synthesized powders.

Improvement of the CO Sensitivity: HPTS-Based Sensors along with Zn@SnO and Sn@ZnO Additives.

Fluorescent pH-sensitive indicator dye, 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS), has become known as a preferred alternative for continuous and accurate monitoring of dissolved and/or gaseous CO in chemistry, medical, and biochemical research. The objective of this work is to enhance the HPTS dye's CO sensitivity in the presence of Zn@SnO and Sn@ZnO additive particles. Sol-gel synthesized metal oxide semiconductors (MOSs) were characterized using XRD, XPS, and SEM.

Effects of NiO, SnO and Ni-doped SnO semiconductor metal oxides on the oxygen sensing capacity of HTPP.

Improving the performance of optical oxygen sensors can be accomplished by adding metal oxide semiconductors (MOSs) additives to the composition comprising an oxygen-sensing agent immobilized in a polymeric thin film. For several decades, MOSs have attracted great interest in gas sensors due to their high sensitivity to many target gasses. Herein, meso-tetraphenylporphyrin (HTPP) dye was immobilized into the poly(1-trimethylsilyl-1-propyne) (poly(TMSP)) silicone rubber in the presence of NiO, SnO, Ni:SnO metal oxide particles as additives, and their thin films were prepared to investigate oxygen-sensitive optical chemical sensor properties.

Tuning CO sensing properties of HPTS along with newly synthesized coordination polymers (CPs).

Coordination polymers (CPs), new functional hybrid materials, have received important attention due to their structural features and many different applications such as gas storage, catalysis, energy storage, small molecule adsorption, luminescence, and chemical sensors. In this study, two newly synthesized metal-organic frameworks (MOFs); [Mn(µ-dmg)-(µ-dmg)(µ-bipy)] (CP1) and [Mn(µ-dmg)(µ-dmg)(µ-dpeten)] (CP2); were used for sensing of gaseous carbon dioxide with a spectrofluorometric method with a dye, 8-hydroxypyrene-1, 3, 6-trisulfonic acid (HPTS) as matrix additive material for the first time. The ion-pair form of the HPTS was used in the polymethyl methacrylate matrix as a thin film form.

Investigation of Spectral Interactions between a SrAlO:Eu, Dy Phosphor and Nano-Scale TiO.

Herein, we studied light induced interactions between two well-known luminescent materials, SrAlOEu, Dy and nano-scale TiO in poly(methyl methacrylate) (PMMA). These two materials were chosen due to their stable nature, efficient spectral properties and more specifically, overlapping excitation/emission bands. When these materials were used together in 1:1 ratio by weight (w/w), the composite exhibited 76% enhancement in the emission intensity with respect to the individual phosphor.

Usage of thiocyanate-based ionic liquid as new optical sensor reagent: Absorption and emission based selective determination of Fe (III) ions.

In this work, the ionic liquid 1-butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]) was evaluated for the first time for its probable usage as new optical sensor reagent for the determination of several metal ions. The ionic liquid exhibited a selective and sensitive response to iron ions in acidic aqueous solutions among all of the tested metal ions. The ([BMIM][SCN]) was encapsulated in ethyl cellulose (EC) matrix in the form of continuous thin films.