The linear dichroism (LD) transition within anisotropic photonic materials displays promising prospects for applications in polarization-wavelength-selective detectors, optical switching, and communication. In conventional two-dimensional (2D) materials, the LD is predominantly uniaxial over a broad spectrum of wavelengths arises principally from reduced symmetry materials. However, behavior crystalline 2D remains elusive. Here, we demonstrate observation unique conversion phenomenon at...

The hydrothermal reactions of a mixture (NH4)6Mo7O24·4H2O, Cu(Ac)2·H2O and 3-bpo ligands at different temperatures result in the isolation two novel inorganic-organic hybrid materials containing but related isopolymolybdate units, [Cu(3-bpo)(H2O)(Mo4O13)]·3H2O () [Cu2(3-bpo)2(Mo6O20)] (). {Mo4O13}n chains unprecedented [Mo6O20](4-) isopolyhexamolybdate anions are linked by octahedral Cu(2+) ions into two-dimensional layers. Interestingly, both located on either side these layers serve as...

Room-temperature phosphorescence (RTP) was realized for the first time in a polyoxometalate-based charge-transfer (CT) hybrid material bearing polyoxometalates (POMs) as electron-donors (D) and rigid naphthalene diimides (NDIs) electron-acceptors (A), meanwhile, this displayed photochromism well. The significant D-A anion-π interaction induced an additional through-space pathway. resulting suitable CT states can efficiently bridge relatively large energy gap between NDI-localized 1 π-π* 3...

Precise controlling of the pH value leads to formation a new type metal-organic pseudorotaxane framework and supramolecular box within accommodating POMs guests.

A sextuple ordered interpenetrated copper-naphthalenediimide network has been constructed by combining the features of porous metal-organic frameworks and π-conjugated supramolecular aggregation. The material exhibits intrinsic semiconductive with narrow bandgap energy (1.2 eV) outstanding electron transport. Theoretical calculations combined experiments indicate that high conduction may originate from π-d coupling J-aggregation.

Interlayer excitons (IX) are produced by the spatially separated electron-hole pairs due to robust Coulomb interactions in van der Waals transition metal dichalcogenide (TMDC) heterostructures (HSS). IX is characterized a larger binding energy, and its lifetime orders of magnitude longer than that direct excitons, providing significant platform for manufacture long-lived exciton devices exploration quantum gas. However, studies restricted single interlayer exciton, simultaneous capture study...

Single-molecule functional materials with luminescence tunable by external stimuli are of increasing interest due to their application in sensors, display devices, biomarkers, and switches. Herein, new europium samarium complexes ligands having triphenylamine (TPA) groups as the redox center 2,2′-bipyridine (bpy) coordinating diketonate (tta) second ligand have been constructed. The show white-light emission selected solvents for proper mixtures from Ln3+ ions ligands. Meanwhile, they...

A novel three-dimensional metal–organic framework (MOF), Ag4(tpt)4{δ-[Mo8O26]}·1.5H2O (A) (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine), possesses a ths-type topology with the hinge deformation mode. The single-crystal X-ray diffraction study shows that and dehydrated phase Ag4(tpt)4{δ-[Mo8O26]} (B) display distinct anisotropic thermal expansion in b direction but contraction ac plane. This rare area negative (NTE) behavior is attributed to hinged structure model supramolecular interactions...

A unique binuclear [Ni₂(μ₂-OH)(COO)₂]-based nickel–organic framework consisting of close-packed octahedral cages exhibits high H₂ and CO₂ uptakes.

A PLL frequency synthesizer with presetting is implemented in a 0.35mum CMOS process and occupies 0.4mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The output between 560 820MHz, the supply 3.3V, measured settling time <10 μs phase noise -85dBe/Hz at 10kHz offset. can automatically compensate for variation temperature

A novel polyoxometalate-based complex [Cu2(ptz)(H2O)(μ2-O)(Mo4O13)]·H2O (ptz= 5-(2-pyridyl)tetrazole) was synthesized using a hydrothermal method; it exhibits two-dimensional network structure and the concomitant existence of spin canting metamagnetism.

Two polyoxometalate-pillared 3D compounds, {Cu5(2-ptz)6(H2O)4(SiW12O40)}·4H2O 1 and {Cu9(2-ptz)12(H2O)6(PMo12O40)2}·H2O 2 (2-ptz = 5-(2-pyridyl)tetrazole) have been constructed based on different polyoxometalate anions, copper–organic coordination polymer sheets by a hydrothermal method. Magnetic investigations reveal that both exhibit antiferromagnetic coupling between the CuII ions. Structural studies show compound exhibits typical pcu-type net with Schälfli symbol of {412·63}, is...

We report a luminescent lanthanide coordination polymer <bold>EuL</bold> which shows fast turn-off response to HCl vapor. This results from the energy change of ligand excited state along with protonation effect renders ligands unable act as efficient antennae for Eu³⁺ characteristic emission.

Graphene has been demonstrated to be a promising material for optoelectronics and photodetection devices because of its ultra-broadband optical absorption high carrier mobility. However, integration with optoelectronic systems limited by the zero-bandgap lack gain mechanism. Herein, we demonstrate novel photodetector based on graphene nanoribbons (GRNs) sizable bandgap. Utilizing trapping charge at interface between SiO2 light-doped silicon, an ultrahigh 22,400 obtained. Our show enhanced...

Two interesting polyoxometalate-templated host–guest compounds 1 and 2 with the same chemical formulae of [Ag6(tpt)4(SiW12O40)Cl2]·2H2O have been obtained by hydrothermal reactions monolacunary Keggin-type K8[α-SiW11O39]·13H2O CH3COOAg tpt ligands under different pH conditions. Compounds are structural isomers. In 1, novel chair-like tetranuclear [Ag4(μ3-Cl)2]2+ clusters additional Ag+ ions linked to form a 2D double-layered structure featured two types voids in layer, double-layers stacked...

Six new silver-phenylethynide compounds, namely, [(AgCCPh)4(AgCF3SO3)(DMSO)2] (1), [(AgCCPh)(Ag3PW12O40)(DMSO)8] (2), [(AgCCPh)(Ag3PMo12O40)(DMSO)8] (3), [(AgCCPh)(Ag4SiW12O40)(DMSO)10] (4), [(AgCCPh)8(Ag4SiW12O40)(DMSO)10] (5), and [(AgCCPh)16(Ag3PW12O40)(DMSO)8(H2O)2] (6), have been synthesized structurally characterized by X-ray crystallography. These compounds exhibit a coordinated silver column structure with OTf−/POM anions serving as counter-anions (1, 6), an infinite chain based on...

Inorganic–organic hybrid semiconductors based on copper( i ) halide are intriguing luminescent materials possessing great prospects as rare-earth elements (REEs) free phosphors for use in solid-state lighting (SSL).

A trigonal propeller-shaped hybrid polyoxometalate (POM) (NH2Me2)3{[Nd(Mo4O13)(DMF)4]3(BTC)2}·8DMF (1; BTC = 1,3,5-benzenetricarboxylate) has been synthesized and structurally characterized. The planar {Mo4} segment is tailored from the precursor Lindqvist polyoxoanion [Mo6O19]2- firstly, plays a key role in reassembly of 1. Furthermore, magnetic studies reveal that 1 shows single-molecule magnet (SMM) behavior.

Interactive and responsive materials are dynamic molecular systems that capable of modulating their behavior adapting to environment autonomously. Photochromic among the fascinating class widely used in switches optoelectronic devices. However, phototriggered color changing largely relies on conformation transformation photochromic motif, which significantly limited usage organic liquid solutions. Herein, we demonstrate a supramolecular system by using electron-rich N,N-dimethylacetamide...