All Procedures for the Synthesis of Silver Nanosheets

Two dimensional silver(I) coordination polymer, [Ag(μ5-T4S)]n (1), (T4S- = toluene-4-sulfonate), has been synthesized and characterized by Inductively Coupled Plasma (ICP) and elemental analyses, IR spectroscopy and powder X-ray diffraction. This compound was calcined at 450, 500 and 700 °C in a furnace and static atmosphere of air. The resulting compound from 1 at 450 °C is a spongy nanostructure which could not be characterized due to its partial calcination process. At 500 and 700 °C, the compound is a mixture of silver and silver sulfate compacted nanosheets and microstructures. By increasing the temperature  from 500 to 700 °C, the tendency for the formation of agglomerated mixture of silver and silver sulfate was increased. In addition, a number of one-step techniques including electrochemical deposition method, electroless deposition method, direct deposition method, redox reaction, mirror reaction, coating technique, self-seeding or self-assembling process and wet chemical method have been reviewed for the synthesis of two-dimensional nano silver

Chylous ascites following radical nephrectomy: a case report

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Synthesis and Application of MOF-808 Decorated with Folic Acid-Conjugated Chitosan as a Strong Nanocarrier for the Targeted Drug Delivery of Quercetin

Herein, MOF-808 (MOF = metal–organic framework) based on zirconium tricarboxylate was synthesized to investigate the influence of decorating groups of folic acid-conjugated chitosan (CS-FA) on drug-delivery efficiency. Quercetin (QU) was loaded on nondecorated MOF-808 and then decorated with a folic acid–chitosan conjugate. The properties and activities of modified MOF-808 were compared with unmodified MOF-808. QU@MOF-808@CS-FA exhibited favorable drug-release properties, high drug-loading capacity, efficient targeting capability, and pH-dependent release behavior, highlighting the critical role of organic modification. A variety of characterization techniques were used to characterize MOF nanoparticles, including Fourier transform infrared, powder X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive X-ray, transmission electron microscopy, Brunauer–Emmett–Teller, ζ potential, and 1H NMR. Additionally, Monte Carlo simulation calculations were carried out to examine the interactions between the structures of MOF-808 and QU. An in vitro cytotoxicity test was conducted, and the results identified that QU@MOF-808@CS-FA demonstrated more superior therapeutics than QU@MOF-808 on FR-positive MCF7 cancerous cells. On the basis of the results, QU@MOF-808@CS-FA is a promising drug carrier by selective targeting and sustained release

Solid-State Structural Transformations of Two Ag^I Supramolecular Polymorphs to Another Polymer upon Absorption of HNO₃ Vapors

Solid-state structural transformation of two polymorphic forms of [Ag­(8-HqH)­(8-Hq)]_<i>n</i> (<b>1α</b> and <b>1β</b>, where 8-HqH = 8-hydroxyquinoline and 8-Hq^– = 8-hydroxyquinolate) to {[Ag­(8-HqH)₂]­NO₃}_<i>n</i> (<b>2</b>) has been observed upon solid–gas reaction of compounds <b>1α</b> and <b>1β</b> with HNO₃ vapors. Solid–gas reaction of compound <b>2</b> with hydrated vapors of NH₃ results in the formation of only the <b>1β</b> polymorph, while solid–solid reaction of compound <b>2</b> with KOH results in the formation of a <b>1α</b> and <b>1β</b> mixture with chiral and achiral space groups of <i>P</i>2₁2₁2₁ and <i>Pbcn</i>, respectively

Holodirected coordination sphere around lead(II) in three-dimensional polymeric structure; New precursor for preparation of lead oxide sulfate nano-structures

A new lead(II) three-dimensional coordination polymer, [Pb-2(mu(3)-ANS)(2)(mu(2)-Cl)(2)(H2O)(2)](n) (1) [ANS(-) = 4-amino-1 -naphthalenesulfonateb has been synthesized and characterized. The single-crystal X-ray data of compound 1 shows only one type of Pb-II ion with coordination number of six, the lead atom has distorted octahedral coordination sphere containing stereo-chemically inactive electron lone pair. The thermal stability of 1 was studied by TG-DTA (Thermo gravimetric and differential thermal analyses). Regular morphology of Pb-2(SO4)O nano-particle was prepared from fine powders of compound 1 by calcination process at 700 degrees C. This nano-structure was characterized by XRD (X-ray powder diffraction) and SEM (Scanning electron microscopy).University of Tehran (01/1/389845

Computational Simulation of CO₂/CH₄ Separation on a Three-Dimensional Cd-Based Metal–Organic Framework

Natural gas purification and biogas recovery require efficient separation of CO2 from CH4, as CH4 is increasingly being recognized as a promising substitute for petroleum due to its environmentally sustainable nature, abundance in natural resources, and economic benefits. In the present work, a 3D Cd-based metal–organic framework, [Cd2(DBrTPA)2(DMF)3] (MUT-11) 2,5-[dibromoterephthalic acid (DBrTPA) and dimethyl formamide (DMF)] was synthesized using a combination of different synthetic methods and fully characterized via several techniques. Additionally, a variety of organic solvents were employed to perform the solvent stability test. The MUT-11 structure was subjected to Grand Canonical Monte Carlo and molecular dynamics simulations to study the adsorption characteristics of CO2 and CH4 gases in both pure and binary states. The results acquired through the simulation-based analysis revealed that the adsorption of CO2 is dominant in all pressure and temperature conditions