Tag: 100-200

Watts, Heath D.;Kubicki, James D.;Kabengi, Nadine published 《Connecting Thermodynamics of Alkali Ion Exchange on the Quartz (101) Surface with Density Functional Theory Calculations》. The research results were published in《Journal of Physical Chemistry A》 in 2022.Application of 7791-11-9 The article conveys some information:

Periodic plane-wave d. functional theory (DFT) calculations were performed on the α-quartz (SiO₂) (101) surface to model exchange of adsorbed Li⁺ and either Na⁺, K⁺, or Rb⁺ in inner- and outer-sphere adsorbed, and aqueous configurations, which are charge-balanced with 2 Cl^–. SiO^– or SiOH groups represented the adsorption surface sites. The SiO^– models included 58 H₂O and 2 H₃O⁺ mols. to approx. an aqueous environment, whereas the SiOH models had 59 H₂O and 1 H₃O⁺ mols. The goal of this work is to calculate the heats of exchange for these alkali ions and to compare the results with those measured by flow microcalorimetry to ascertain the most probable mechanisms for these cations exchanging on the α-quartz (101) surface. Energy minimizations of each alkali ion adsorbed as outer-sphere complexes on SiOH surface sites, and as inner- and outer-sphere complexes on SiO^– surface sites, were used to determine the energy of exchange (ΔE_ex) with Li⁺ for comparison with exptl. determined ΔH_ex values. Here, we present a novel method for calculating ΔE_ex using the difference in energies of geometry-optimized end member models. The aqueous and surface structures produced are similar to those observed exptl. Although the trend for the calculated ΔE_ex values is consistent with those from the heats of exchange measured exptl., the magnitude of our modeled ΔE_ex results is significantly larger than select exptl. data from the literature; we discuss the reasons for this discrepancy herein. The relative energy differences of the various configurations modeled have implications for the measurements of the surface charge via potentiometric titrations due to the more active role of alkali cations in quartz surface chem. that have been previously considered as inert background electrolytes. And Rubidiumchloride (cas: 7791-11-9) was used in the research process.

Rubidium chloride(cas: 7791-11-9) is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology.Application of 7791-11-9 It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Reference of RubidiumchlorideIn 2021, Geng, Yuxiao;Yang, Bobo;Xiang, Yanrong;Shi, Mingming;Hu, Rongrong;Guo, Chunfeng;Li, Yuefeng;Zou, Jun published 《Preparation and Research of Perovskite Quantum Dots Powder Based on RbCl Doped CsPbBr₃》. 《ChemistrySelect》published the findings. The article contains the following contents:

Researchers have achieved precise control of the size of quantum dots by using the quantum confinement effect. The Rb⁺ and Cs⁺ with similar ionic radii have become a new mechanism for researchers to regulate the emission wavelength of quantum dots. However, there are few studies on the performance of codoped quantum dots with ion at present. By adding a saturated solution of RbCl into an organic solution of CsPbBr₃, quantum dots doped with Rb⁺ and Cs^–were prepared The prepared quantum dots realized adjustable emission spectrum (457-510 nm), stable lattice structure, and good stability under UV light irradiation Therefore, double ion doping is a new method to prepare short-wavelength of quantum dots.Rubidiumchloride (cas: 7791-11-9) were involved in the experimental procedure.

Rubidium chloride(cas: 7791-11-9) is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology.Reference of Rubidiumchloride It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Nap, Rikkert J.;Qiao, Baofu;Palmer, Liam C.;Stupp, Samuel I.;Olvera de la Cruz, Monica;Szleifer, Igal published 《Acid-base equilibrium and dielectric environment regulate charge in supramolecular nanofibers》. The research results were published in《Frontiers in Chemistry (Lausanne, Switzerland)》 in 2022.Application In Synthesis of Rubidiumchloride The article conveys some information:

Peptide amphiphiles are a class of mols. that can self-assemble into a variety of supramol. structures, including high-aspect-ratio nanofibers. It is challenging to model and predict the charges in these supramol. nanofibers because the ionization state of the peptides are not fixed but liable to change due to the acid-base equilibrium that is coupled to the structural organization of the peptide amphiphile mols. Here, we have developed a theor. model to describe and predict the amount of charge found on self-assembled peptide amphiphiles as a function of pH and ion concentration In particular, we computed the amount of charge of peptide amphiphiles nanofibers with the sequence C₁₆ – V₂A₂E₂. In our theor. formulation, we consider charge regulation of the carboxylic acid groups, which involves the acid-base chem. equilibrium of the glutamic acid residues and the possibility of ion condensation. The charge regulation is coupled with the local dielec. environment by allowing for a varying dielec. constant that also includes a position-dependent electrostatic solvation energy for the charged species. We find that the charges on the glutamic acid residues of the peptide amphiphile nanofiber are much lower than the same functional group in aqueous solution There is a strong coupling between the charging via the acid-base equilibrium and the local dielec. environment. Our model predicts a much lower degree of deprotonation for a position-dependent relative dielec. constant compared to a constant dielec. background. Furthermore, the shape and size of the electrostatic potential as well as the counterion distribution are quant. and qual. different. These results indicate that an accurate model of peptide amphiphile self-assembly must take into account charge regulation of acidic groups through acid-base equilibrium and ion condensation, as well as coupling to the local dielec. environment. The experimental procedure involved many compounds, such as Rubidiumchloride (cas: 7791-11-9) .

Rubidium chloride(cas: 7791-11-9) is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology.Application In Synthesis of Rubidiumchloride It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Li, Lei;Sun, Wei;Tong, Zhibo;Bo, Maolin;Ken Ostrikov, Kostya;Huang, Yongli;Sun, Chang Q. published 《Discriminative ionic polarizability of alkali halide solutions: Hydration cells, bond distortion, surface stress, and viscosity》 in 2022. The article was appeared in 《Journal of Molecular Liquids》. They have made some progress in their research.Computed Properties of ClRb The article mentions the following:

Understanding the performance of individual ions in salt solutions and the consequence of ionic hydration on hydrogen bonding network distortion, surface stress, and solution viscosity remains great challenge. We show herein findings pertained to alkali halide YX solutions using differential phonon spectroscopy (X = Cl, Br, I; Y = Li, Na, K, Rb, Cs): (i) an ion occupies eccentrically the tetrahedrally-coordinated interstitial of water to form a (±:4H₂O:6H₂O) hydration cell without bonding to H₂O mols.; (ii) ionic polarization shortens and stiffens the H-O bond while does the O:H nonbond contrastingly; (iii) the screening of the hydrating water dipoles limits the cation hydration cell to be size invariant while the inter-anion repulsion reduces its hydration volume by weakening the anionic long-range elec. field when the ionic separation shrinks; and (iv) the polarization of cation and anion dictates resp. the linear and the nonlinear part of Jones-Dale’s viscosity and surface stress. Findings would provide profound impact to the understanding and deep engineering of water, ice, and aqueous solutions And Rubidiumchloride (cas: 7791-11-9) was used in the research process.

Rubidium chloride(cas: 7791-11-9) can increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.Computed Properties of ClRb Pharmaceutical compositions have been used as antidepressants in Europe. It is employed in biochemistry to induce cells to take up DNA.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Quality Control of Rubidiumchloride《The problem of the relationship of the debye temperature of the metal with the basic physical properties of the elements》 was published in 2022. The authors were Shachneva, E. Yu.;Khentov, V. Ya., and the article was included in《Advanced Physical Research》. The author mentioned the following in the article:

The paper deals with the interaction of man and nature, as well as the problem of the occurrence of man-made waste. This is confirmed in the processes of transfer of matter, which affects the process of diffusion of elements. A relationship has been established between the phys. properties of crystals and the Debye temperature for Group I s-element halides. High values of the correlation coefficients are presented. The graphical dependence of the values of the heats of sublimation with the Debye temperature of the metal element is presented. This suggests a possible mechanism for the transfer of the considered metals in nature. To complete the study, the researchers used Rubidiumchloride (cas: 7791-11-9) .

Rubidium chloride(cas: 7791-11-9) can increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.Quality Control of Rubidiumchloride Pharmaceutical compositions have been used as antidepressants in Europe. It is employed in biochemistry to induce cells to take up DNA.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Yu, Xudong;Chen, Niancu;Feng, Shan;Zeng, Ying published 《Phase Equilibria on the Reciprocal Quaternary System K⁺, Rb⁺//Cl^–, and Borate-H₂O at T = 323.2 K and p = 94.77 kPa》 in 2021. The article was appeared in 《Journal of Chemical & Engineering Data》. They have made some progress in their research.Recommanded Product: 7791-11-9 The article mentions the following:

The isothermal dissolution method was applied for the phase equilibrium experiment of the quaternary system K⁺, Rb⁺ // Cl^–, and borate-H₂O at T = 323.2 K and p = 94.77 kPa. The solubilities and refractive indexes (n_D) of the system were determined exptl. The coexisting salts of the quaternary invariant points were identified using the X-ray diffraction (XRD) method. Based on the measured data, the stable phase diagram and the figures of water content and refractive index (n_D) vs composition were plotted for this system at 323.2 K. The results show that the system belongs to a complex type with the formation of a solid solution [(K, Rb)Cl]. The stable phase diagram consists of three quaternary invariant points, seven isothermal dissolution curves, and five crystallization regions corresponding to KCl, RbCl, RbB₅O₆(OH)₄·2H₂O, K₂B₄O₅(OH)₄·2H₂O, and [(K, Rb)Cl]. The size of the RbB₅O₆(OH)₄·2H₂O crystallization zone is the largest among the coexisting salts in the quaternary system, which means it is the most easily crystallized from the mixed solution containing potassium, rubidium, chloride, and borate. The experimental procedure involved many compounds, such as Rubidiumchloride (cas: 7791-11-9) .

Rubidium chloride(cas: 7791-11-9) can increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.Recommanded Product: 7791-11-9 Pharmaceutical compositions have been used as antidepressants in Europe. It is employed in biochemistry to induce cells to take up DNA.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Tang, Chunlan;Xing, Wenhao;Liang, Fei;Sun, Mengran;Tang, Jian;Lin, Zheshuai;Yao, Jiyong;Chen, Kaixin;Wu, Jieyun;Yin, Wenlong;Kang, Bin published 《Structural modification from centrosymmetric rubidium mercury germanium sulfate to noncentrosymmetric sodium rubidium mercury germanium sulfate infrared nonlinear optical material》 in 2022. The article was appeared in 《Journal of Materials Chemistry C: Materials for Optical and Electronic Devices》. They have made some progress in their research.Reference of Rubidiumchloride The article mentions the following:

Noncentrosym. (NCS) structure is the precondition for second-order nonlinear optical (NLO) materials. In this work, we present a new strategy for constructing NCS structures, whereby mixed alkali metals make a new NCS chalcogenide, (Na₃Rb)Hg₂Ge₂S₈, based on the centrosym. (CS) Rb₄Hg₂Ge₂S₈. (Na₃Rb)Hg₂Ge₂S₈ crystallizes in the polar space group of Pca21, and adopts a filled cristobalite-type structure with a {[HgGeS₄]^2-}_∞ framework formed by the alternating connection of [HgS₄] and [GeS₄] tetrahedra via corner-sharing and with the mixed alkali metal cations in the cavities of the framework. Structural anal. and theor. calculations suggest that the ordered and alternating arrangement of NLO-active chromophores, [HgS₄] and [GeS₄] tetrahedra, induced by partial substitution of alkali metals plays an important role in the enhanced second harmonic generation activity. As such, (Na₃Rb)Hg₂Ge₂S₈ exhibits strong second harmonic generation response of 1.4 x AgGaS₂ at 2090 nm, wide band gap of 2.76 eV and low m.p. of 444 °C. Therefore, this strategy of mixed alkali metals may shed light on structural modification from CS to NCS for new NLO materials. To complete the study, the researchers used Rubidiumchloride (cas: 7791-11-9) .

Rubidium chloride(cas: 7791-11-9) is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology.Reference of Rubidiumchloride It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Pei, Kai;Kim, So Yeon;Li, Ju published 《Electrochemically stable lithium-ion and electron insulators (LEIs) for solid-state batteries》 in 2022. The article was appeared in 《Nano Research》. They have made some progress in their research.Related Products of 7791-11-9 The article mentions the following:

Abstract: Rechargeable solid-state Li metal batteries demand ordered flows of Li-ions and electrons in and out of solid structures, with repeated waxing and waning of LiBCC phase near contact interfaces which gives rise to various electro-chemo-mech. challenges. There have been approaches that adopt three-dimensional (3D) nanoporous architectures consisting of mixed ion-electron conductors (MIECs) to combat these challenges. However, there has remained an issue of Li_BCC nucleation at the interfaces between different solid components (e.g., solid electrolyte/MIEC interface), which could undermine the interfacial bonding, thereby leading to the evolution of mech. instability and the loss of ionic/electronic percolation. In this regard, the present work shows that the Li-ion and electron insulators (LEIs) that are thermodynamically stable against LiBCC could combat such challenges by blocking transportation of charge carriers on the interfaces, analogous to dielec. layers in transistors. We searched the ab initio database and have identified 48 crystalline compounds to be LEI candidates (46 exptl. reported compounds and 2 hypothetical compounds predicted to be stable) with a band gap greater than 3 eV and vanishing Li solubility Among these compounds, those with good adhesion to solid electrolyte and mixed ion-electron conductor of interest, but are lithiophobic, are expected to be the most useful. We also extended the search to Na or K metal compatible alkali-ion and electron insulators, and identified some crystalline compounds with a property to resist corresponding alkali-ions and electrons. [graphic not available: see fulltext]. To complete the study, the researchers used Rubidiumchloride (cas: 7791-11-9) .

Rubidium chloride(cas: 7791-11-9) is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology.Related Products of 7791-11-9 It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Product Details of 7791-11-9《Polarizable force fields for accurate molecular simulations of aqueous solutions of electrolytes, crystalline salts, and solubility: Li⁺, Na⁺, K⁺, Rb⁺, F^–, Cl^–, Br^–, I^–》 was published in 2022. The authors were Dockal, Jan;Lisal, Martin;Moucka, Filip, and the article was included in《Journal of Molecular Liquids》. The author mentioned the following in the article:

We develop and study polarizable microscopic models, force fields, for mol. simulations of alkali-halide electrolyte aqueous solutions, their crystals, and phase equilibrium We start from the AH/BK3 force fields of Kiss and Baranyai (P. T. Kiss and A. A. Baranyai, J. Chem. Phys. 2014, 141, 114501), which we refine using an approach for determining ion-ion interaction parameters, directly targeting exptl. values of the lattice energy, pressure at a given d., and bulk and shear moduli of anhydrous electrolyte crystals. We apply the approach to 16 alkali-halide salts crystallizing in the face-centered cubic rock salt structure. As a result, we obtain force fields which predict rather accurately properties of crystals including their chem. potentials, properties of aqueous solutions including their static permittivity, and aqueous solubility The force fields can thus find applications in mol. simulations of alkali-halide aqueous electrolytes, their interfaces, phase equilibrium, metastable states, and other cases where less accurate models may exhibit various undesirable features such as excessive ion pairing, spurious precipitation, or incorrect low mobility.Rubidiumchloride (cas: 7791-11-9) were involved in the experimental procedure.

Rubidium chloride(cas: 7791-11-9) is the mostly used rubidium compound, and finds use in various fields ranging from electrochemistry to molecular biology.Product Details of 7791-11-9 It is an efficient non-invasive biomarker; increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Dong, Wenpan;Liu, Yanlei;Xu, Chao;Gao, Yongwei;Yuan, Qingjun;Suo, Zhili;Zhang, Zhixiang;Sun, Jiahui published 《Chloroplast phylogenomic insights into the evolution of Distylium (Hamamelidaceae)》 in 2021. The article was appeared in 《BMC Genomics》. They have made some progress in their research.Safety of Rubidiumchloride The article mentions the following:

Most Distylium species are endangered. Distylium species mostly display homoplasy in their flowers and fruits, and are classified primarily based on leaf morphol. However, leaf size, shape, and serration vary tremendously making it difficult to use those characters to identify most species and a significant challenge to address the taxonomy of Distylium. To infer robust relationships and develop variable markers to identify Distylium species, we sequenced most of the Distylium species chloroplast genomes. The Distylium chloroplast genome size was 159,041-159,127 bp and encoded 80 protein-coding, 30 tRNAs, and 4 rRNA genes. There was a conserved gene order and a typical quadripartite structure. Phylogenomic anal. based on whole chloroplast genome sequences yielded a highly resolved phylogenetic tree and formed a monophyletic group containing four Distylium clades. A dating anal. suggested that Distylium originated in the Oligocene (34.39 Ma) and diversified within approx. 1 Ma. The evidence shows that Distylium is a rapidly radiating group. Four highly variable markers, matK-trnK, ndhC-trnV, ycf1, and trnT-trnL, and 74 polymorphic simple sequence repeats were discovered in the Distylium plastomes. The plastome sequences had sufficient polymorphic information to resolve phylogenetic relationships and identify Distylium species accurately. To complete the study, the researchers used Rubidiumchloride (cas: 7791-11-9) .

Rubidium chloride(cas: 7791-11-9) can increases dopamine and norepinephrine levels, and useful for anergic and apathetic depressives.Safety of Rubidiumchloride Pharmaceutical compositions have been used as antidepressants in Europe. It is employed in biochemistry to induce cells to take up DNA.

Reference:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics