As an atomically thin material with low surface energy, graphene is excellent candidate for reducing adhesion and friction when coated on various surfaces. Here, we demonstrate the superior frictional characteristics of films which were grown Cu Ni metal catalysts by chemical vapor deposition transferred onto SiO(2)/Si substrate. The effectively reduced forces, multilayer that a few nanometers thick had coefficients comparable to bulk graphite.

Diversely shaped porous coordination polymer particles (CPPs) were synthesized by a simple solvothermal reaction of 1,4-benzenedicarboxylic acid (H2BDC) and In(NO3)3 x xH2O in DMF. The growth crystalline CPPs was controlled through particle blocking event involving agent interaction with particular facets simultaneous interruption specific direction. Systematic reactions the presence various amounts pyridine as conducted to see CPP formation. Long rod, short lump, disk-shaped hexagonal faces...

The conjunction of porous ZIF-8 with polystyrene spheres is demonstrated to induce the formation polystyrene@ZIF-8 core-shell structures. A subsequent etching process on core-shells remove cores results in a unique hollow ZIF-8.

The growth of one metal-organic framework (MOF) on another MOF for constructing a heterocompositional hybrid is an interesting research topic because the curiosity regarding occurrence this phenomenon and value MOFs as multifunctional materials or routes fine-tuning properties. In particular, anisotropic fascinating development possessing atypical shapes heterostructures abnormal Herein, we clarify understanding behavior secondary initial template, such isotropic ways associated with their...

This template will self-destruct: A unique particle-growth mechanism involves growth of new coordination polymers on the surface initially formed hexagonal blocks and concomitant dissolution to form tubes (see scheme scanning electron, optical, fluorescence microscopy images). Calcination yields ZnO particles same shape.

A straightforward strategy for the synthesis of composition-tunable hybrid metal oxide particles with a unique multi ball-in-ball structure has been demonstrated. The systems are logically formulated and prepared using following processes: i) coordination polymer (CPPs) precipitation method, ii) cation exchange reaction is used to effect composition change, iii) final calcination process CPPs use obtain oxides. Detailed facts importance specialist readers published as "Supporting...

Microsized chemosensor particle (CPP-16, CPP means coordination polymer particle), which is made from a metal-organic framework (MOF), synthesized using pyrene-functionalized organic building block. This block contains three important parts, construction part, Cu(2+) detection and fluorophore part. PXRD studies have revealed that CPP-16 has 3D cubic structure of MOF-5. During both MOF formation sensing event, fluorophores within undergo dual changes in conformation optical properties. After...

Nano- and micro-composites comprised of porous carbon magnetic particles are prepared by one-step pyrolysis metal-organic frameworks (MOFs). The porosity composition resulting carbons facilely regulated altering the temperature changing organic building blocks incorporated within initial MOFs.

Three coordination polymer particles (CPPs) are selectively synthesized using the solvothermal method. All three CPPs prepared from same building blocks. However, they form different morphologies, such as elongated hexagons, ellipsoids, and rods. Gas-adsorption measurements on N2, CO2, H2 reveal that diversely shaped have gas-adsorption properties, even though chemical compositions. Detailed facts of importance to specialist readers published "Supporting Information". Such documents...

The ability to fabricate multicompositional hybrid materials in a precise and controlled manner is one of the primary goals modern science research. In addition, an understanding phenomena associated with systematic growth material on another can facilitate evolution multifunctional materials. Here, we demonstrate manipulation isotropic and/or anisotropic nanoscale various coordination polymers (CPs) obtain heterocompositional polymer particles. Chemical composition analyses conducted at...

Non-hollow In2O3 particles with hexagonal rod- and disk-shapes are generated from the calcination of porous CPPs; however, elongated hexagon-, ellipsoid-, rod-shaped hollow formed non-porous CPPs.

Well-dispersed hollow porous carbon (HPC) spheres are prepared by the pyrolysis of polystyrene@ZIF-8 core–shell microspheres. The resulting HPC have high surface areas and show tremendous methylene blue adsorption ability due to lack agglomeration, excellent dispersion, surface-to-volume ratio.

Compositions as well morphologies and structures of particles are vital factors that define their properties applications. However, the morphology structure changes associated with composition change metal-organic frameworks (MOFs) barely studied. Herein, we report MOF ratio two organic linkers incorporated within particles, when they constructed from reactions In(NO3)3 in presence isophthalic acid (H2IPA) and/or 1,4-benzenedicarboxylic (H2BDC). Two tendencies—the tendency BDC In(3+) to form...

A metal-mediated coordination polymeri-zation method is demonstrated to immobilize organic molecules onto silica particles in the form of polymers. Unique silica@coordination polymer core–shell microspheres are generated, which shell thickness controlled from 65 295 nm by varying amount precursors or particles.

Monodisperse hollow metal oxides are generated from silica@coordination polymer core/shell precursors through a calcination process to transform coordination polymers into oxides, followed by an etching remove silica cores. The layer thicknesses of the structures effectively controlled adjusting shell within precursors. Detailed facts importance specialist readers published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available...

Hollow particles are considered to be fascinating materials due their useful applications and unique properties. Understanding the formation mechanism of hollow structures is critical for controlled formation. Herein, we demonstrate fabrication metal–organic framework (hollow MOF) microparticles via a one-step solvothermal reaction Zn(NO3)2 1,3,5-benzenetricarboxylic acid (H3BTC) without extra template materials. The study MOF reveals self-templated consisting three stages: (1) spherical...

Au or Ag nanoparticles-embedded hollow carbon spheres, which display outstanding catalytic activity and excellent recyclability, are prepared by a one-step pyrolysis of metal-organic framework (MOF) hybrids consisting polystyrene cores MOF shells loaded with noble metal ions (polystyrene@ZIF-8/Mn+; Mn+ = Au3+ Ag+). As service to our authors readers, this journal provides supporting information supplied the authors. Such materials peer reviewed may be re-organized for online delivery, but not...

This study examined a model for enhancing communicative competence and confidence through media-based English speaking portfolios in university-level liberal arts classes. Participants included three sections of an Conversation II course offered during the first semester 2024. Media-based portfolio activities were implemented, their effectiveness was assessed surveys as well midterm final exam video analyses. Findings indicated that most students, who initially reported difficulty beyond...

The controlled formation of metal–organic frameworks (MOFs) or coordination polymers (CPs) with suitable components and structural features is one the most important themes in MOF research. In particular, reliable preparation hybrid MOFs containing more than two different kinds metal ions organic linkers a comprehensive understanding flexibility are central issues for production desired properties. We report synthesis micro-sized particles [also known as polymer (CPPs)] three each particle:...

Abstract Selbstzerstörerisches Templat : Bei einem einzigartigen Partikelwachstumsmechanismus wachsen neue Koordinationspolymere auf der Oberfläche ursprünglich gebildeter hexagonaler Blöcke, und zugleich lösen sich die Blöcke unter Bildung Röhren (siehe Schema Rasterelektronen‐, optische Fluoreszenzmikroskopiebilder). Durch Kalzinieren werden in ZnO‐Partikel gleichen Form umgewandelt. magnified image

ABSTRACT Rural tourism has been widely acknowledged for its effectiveness in contributing to rural areas’ development. With strong government support, developed many countries during the last several decades. This study aims improve understanding regarding Korean areas using a segmentation approach. The responses of 442 tourists 23 villages were analyzed. Four segments identified based on different benefits they sought their vacation establishments. estimation multinomial logit model...

Abstract The conjugation of Eu 3+ ‐doped coordination polymers constructed from Gd and isophthalic acid (H 2 IPA) with silica particles is investigated for the production luminescent microspheres. A series doping ratio‐controlled silica@coordination polymer core–shell spheres easily synthesized by altering amounts metal nodes used in reactions, where ratios are 10:0 ( 1a ), 9:1 1b 8:2 1c 7:3 1d 5:5 1e 0:10 1f ). formation monodisperse uniform structures achieved throughout entirety a series....