Carbon monoxide (CO) produced in many large-scale industrial oxidation processes is difficult to separate from nitrogen (N2), and afterward, CO further oxidized carbon dioxide. Here, we report a soft nanoporous crystalline material that selectively adsorbs with adaptable pores, present crystallographic evidence molecules can coordinate copper(II) ions. The unprecedented high selectivity was achieved by the synergetic effect of local interaction between accessible metal sites global...

The adsorptive separation of C2H2 and CO2 via porous materials is nontrivial due to the close similarities their boiling points kinetic diameters. In this work, we describe a new flexible coordination polymer (PCP) [Mn(bdc)(dpe)] (H2bdc = 1,4-benzenedicarboxylic acid, dpe 1,2-di(4-pyridyl)ethylene) having zero-dimensional pores, which shows an adsorbate discriminatory gate effect. compound opening type abrupt adsorption for but not CO2, leading appreciable selective over at near ambient...

The generation of topologically complex nanocarbons can spur developments in science and technology. However, conventional synthetic routes to interlocked molecules require heteroatoms. We report the synthesis catenanes a molecular trefoil knot consisting solely para-connected benzene rings. Characteristic fluorescence heterocatenane associated with fast energy transfer between two rings was observed, topological chirality all-benzene confirmed by enantiomer separation circular dichroism...

Abstract Technologies for the creation of topological carbon nanostructures have greatly advanced synthetic organic chemistry and materials science. Although simple molecular nanocarbons with a belt topology been constructed, analogous nanobelts twist—more specifically, Möbius (MCNBs)—have not yet synthesized owing to their high intrinsic strain. Here we report synthesis, isolation characterization MCNB. Calculations strain energies suggest that large MCNBs are synthetically accessible....

Durch schmale Kanäle: Die Kombination eines mikroporösen Koordinationspolymers mit Histamin ergibt ein Material einer Protonenleitfähigkeit von über 10−3 S cm−1 unter wasserfreien Bedingungen. Dabei erzeugt die anisotrope Ausrichtung der Histaminmoleküle in den geraden Kanälen einen spezifischen Leitungspfad (siehe Bild). Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made...

By adopting a ligand-based solid solution approach, the sulphonic acid functional group can be successfully incorporated into porous coordination polymer with UiO-66 structure type. Zr(6)O(4)(OH)(4)(BDC-SO(3)H)(1.1)(BDC)(4.9) possesses enhanced heat of adsorption for carbon dioxide and acetone compared to Zr(6)O(4)(OH)(4)(BDC)(6).

Abstract The new covalent organic framework material TDFP‐1 was prepared through a solvothermal Schiff base condensation reaction of the monomers 1,3,5‐tris‐(4‐aminophenyl)triazine and 2,6‐diformyl‐4‐methylphenol. Owing to its high specific surface area 651 m 2 g −1 , extended π conjugation, inherent microporosity, exhibited an excellent energy‐storage capacity with maximum capacitance 354 F at scan rate mV s good cyclic stability 95 % retention initial after 1000 cycles 10 A . π‐conjugated...

The upbuilding of dirhodium tetracarboxylate paddlewheels into porous architectures is still challenging because the inertness equatorial carboxylates for ligand-exchange reaction. Here we demonstrate synthesis a new family metal-organic cuboctahedra by connecting units through 1,3-benzenedicarboxylate and assembling as solids. Carbon monoxide nitric oxide were strongly trapped in internal cavity thanks to strong affinity unsaturated axial coordination sites centers.

A quasielastic neutron scattering and solid-state (2)H NMR spectroscopy study of the polymeric spin-crossover compound {Fe(pyrazine)[Pt(CN)(4)]} shows that switching rotation a molecular fragment--the pyrazine ligand--occurs in association with change spin state. The was examined on wide time scale (10(-13)-10(-3) s) by both techniques, which clearly demonstrated combination between transition under external stimuli (temperature chemical). rings are seen to perform 4-fold jump motion about...

The parasitic plant Striga hermonthica has been causing devastating damage to the crop production in Africa. Because requires host-generated strigolactones germinate, identification of selective and potent strigolactone agonists could help control these noxious weeds. We developed a agonist, sphynolactone-7, hybrid molecule originated from chemical screening, that contains two functional modules derived synthetic scaffold core component strigolactones. Cooperative action activation...

Abstract The design of inexpensive and less toxic porous coordination polymers (PCPs) that show selective adsorption or high capacity is a critical issue in research on applicable materials. Although use Group II magnesium(II) calcium(II) ions as building blocks could provide cheaper materials lead to enhanced biocompatibility, examples PCPs are extremely limited compared with commonly used transition metal ones, because neutral bridging ligands have not been available for ions. Here we...

The layered structures of graphite and related nanographene molecules play key roles in their physical electronic functions. However, the stacking modes negatively curved nanographenes remain unclear, owing to lack suitable molecules. Herein, we report synthesis one-dimensional supramolecular self-assembly without any assembly-assisting substituents. This self-assembles various organic solvents acts as an efficient gelator. formation nanofibers was confirmed by microscopic measurements,...

Hydroxide anion transport is essential for alkaline fuel cells, but hydroxide has an inherently low conductivity owing to its small diffusion coefficient and high mass. Ordered open channels found in covalent organic frameworks are promising as pathways enable transport, this remains be explored. Here we report designed synthesis of anionic that promote across the one-dimensional channels. Engineering cationic chains with imidazolium termini onto pore walls self-assembles a supramolecular...

Systematic functionalization of porous coordination polymers (PCPs), [Cu(2)(L)(2)(ted)](n) (where L = dicarboxylates and ted triethylenediamine), by introducing various substituents onto the component organic ligand, L, was performed to regulate radical polymerization methyl methacrylate (MMA) in nanochannels. The effect substituent groups on stereoregularity resulting poly(methyl methacrylate) (PMMA) observed, where tacticity PMMA strongly depended number position substituent. In...

We have synthesized a porous coordination polymer containing pyridinium cation as an organic linker and investigated the methanol absorptive ability of cationic surface. The result implies that surface participates in strong adsorption methanol.

We have synthesized four porous coordination polymers (PCPs) using Zn(2+), 4,4'-sulfonyldibenzoate (sdb), and types of dinitrogen linker ligands, 1,4-diazabicyclo[2,2,2]octane (dabco), 1,4-bis(4-pyridyl)benzene (bpb), 3,6-bis(4-pyridyl)-1,2,4,5-tetrazine (bpt), 4,4'-bipyridyl (bpy). The bent sdb ligands form a rhombic space connected by zinc paddle-wheel units to one-dimensional double chain, each ligand linked the chains. There are different assembled structures two-dimensional sheets with...

Abstract Porous coordination polymers constructed from Zn 2+ and isophthalate with linear bipyridyl‐type ligands were synthesized. [Zn(ip)(bpb)] n (CID‐21; ip=isophthalate, bpb=1,4‐bis(4‐pyridyl)benzene), [Zn(ip)(bpt)] (CID‐22; bpt=3,6‐bis(4‐pyridyl)‐1,2,4,5‐tetrazine), [Zn(ip)(bpa)] (CID‐23; bpa=1,4‐bis(4‐pyridyl)acetylene) all have interdigitated structures of layers similar void volumes (≈27 %). In these compounds, 1D bottleneck‐type channels run along the perpendicular direction layer...

The new porous polymer TPDA-1 has been synthesized via solvothermal Schiff base condensation reaction between two organic monomers, i.e., 2,4,6-trihydroxyisophthalaldehyde and 1,3,5-tris(4-aminophenyl)triazine. material showed a very high specific capacitance of 469.4 F g–1, at 2 mV s–1 scan rate, together with surface area 545 m2 g–1. It also exhibited excellent cyclic stability 95% retention its initial after 1000 cycles 5 A suggesting potential as performance supercapacitor. Extended...

Rational design to control the dynamics of molecular rotors in crystalline solids is interest because it offers advanced materials with precisely tuned functionality. Herein, we describe rotational frequency flexible porous coordination polymers (PCPs) using a solid-solution approach. Solid-solutions PCPs [{Zn(5-nitroisophthalate)x(5-methoxyisophthalate)1-x(deuterated 4,4'-bipyridyl)}(DMF·MeOH)]n allow continuous modulation cell volume by changing ratio x. Variation isostructures provides...

Charged up: A novel porous coordination polymer with a charged organic surface (COS) comprising zwitterionic linker, viologen, has been synthesized. The COS shows strong Lewis acidity accompanied flexibility, and the isosteric heat of H2 adsorption is 9.5 kJ mol−1, which comparable to that open metal sites (OMSs).

Abstract Numerous otherwise difficult applications have been realized with materials, the chemical/physical properties of which can be controlled by external stimuli such as heat, pressure, photo‐irradiation, and voltage bias. However, complexity design lack easy‐to‐conduct synthetic methods make creation on‐demand responsive materials a formidable task. Here we report an electric‐stimuli‐responsive multifunctional material, [10]CPP‐I : crystalline assembly hydrocarbon nanoring...