Fluorescent Tetraphenylethylene-Based Cerium Metal-Organic Frameworks for White-Light-Emitting Diodes.

Discovery of highly efficient and thermal stable phosphors is the focus of the studies in phosphor-converted white light-emitting diodes (LEDs). Herein, a tetraphenylethylene-based cerium metal-organic framework () was synthesized and characterized. The intricate architecture of shows an overall 3D → 3D 2-fold interpenetration framework.

N-octylpyridine hydrogen sulphate ionic liquid for multifunctional fluorescent response in different solvents.

Ionic liquids (ILs) have attracted considerable interest in the last two decades owing to their unique fluorescent properties. Herein, N-octylpyridine hydrogen sulphate ([OP]HSO) was synthesised and characterised using H NMR and infrared spectroscopies. In addition, the fluorescence spectra of [OP]HSO in water, methanol, ethanol and acetonitrile were studied.

Effects of acupuncture on microglial polarization and the TLR4/TRIF/MyD88 pathway in a rat model of traumatic brain injury.

Objective: Neuroinflammation caused by traumatic brain injury (TBI) can lead to neurological deficits. Acupuncture can inhibit neuroinflammation and promote nerve repair; however, the specific mechanism is still unclear. The purpose of this study was to explore whether acupuncture could modulate the M1 and M2 phenotypic polarization of microglia in a rat model of TBI via the toll-like receptor 4 (TLR4)/intracellular toll-interleukin-1 receptor (TIR) domain-containing adaptor inducing interferon-β (TRIF)/myeloid differentiation factor 88 (MyD88) pathway.

A Stable Polyoxometalate-Based Metal-Organic Framework with Active CoMoO Layers for Electroreduction and Visible-Light-Driven Water Oxidation.

Polyoxometalate-based MOFs afford a great opportunity in terms of water oxidation. Herein, a new PMOF () has been constructed with active CoMoO layers and TPPE ligands. In , each TPPE ligand bridges eight Co(II) and Mo(VI) cations to give a 3D (3,4,5)-connected (6·8·10)(6)(6·8) framework.

Three resorcin[4]arene-based lanthanide-coordination polymers with multifunctional photoluminescence sensing properties.

By utilizing a novel octacarboxylate-functionalized resorcin[4]arene as organic linkers, three lanthanide-coordination polymers, namely, [(CH)NH][Ln(HL)(HO)]·2HO (Ln = Tb (1), Eu (2) and Gd (3), HL = 2,8,14,20-tetra-pentyl-4,6,10,12,16,18,22,24-octa-carboxymethoxy-resorcin[4]arene) have been solvothermally synthesized and structurally characterized. Isostructural 1-3 display unique two dimensional sandwich-based layers built with Ln cations and bowl-shaped HL anions. Remarkably, 1 and 2 produce intensive green and red emissions respectively and long lifetimes thanks to the antenna effect of HL anions.

Stereochemically Dependent Synthesis of Two Cu(I) Cluster-Based Coordination Polymers with Thermochromic Luminescence.

Two Cu(I) cluster based coordination polymers, [CuI(cis-bpype)]·CHCN (1) and [CuI(cis-bpype)(trans-bpype)]·3DMF (2), have been synthesized from cis- and trans-1,2-bis(4-(pyridin-2-yl)phenyl)ethane (cis- and trans-bpype) ligands and {CuI(PPh)} as starting materials. In compound 1, adjacent rhomboid-type {CuI} units from the decomposition of {CuI(PPh)} starting material connect by cis-bpype ligands to form a 1D framework. Compound 2 also has a 1D structure, but it has a {ML}-type coordinated cage constructed by three cis-bpype ligands and two {CuI} secondary building units (SBU), and these coordination cages further link by trans-bpype to form the final frameworks.

Two tetraphenylethene-containing coordination polymers for reversible mechanochromism.

Two fluorescent coordination polymers have been designed and synthesized from a tetraphenylethene (TPE) derivative. These polymers, which can be potentially utilized as mechanical sensors, exhibit reversible mechanochromic luminescence with color changes visible to the naked-eye from blue to green-yellow by grinding or soaking in N,N-dimethylformamide (DMF) under UV irradiation.

PEG-Induced Synthesis of Coordination-Polymer Isomers with Tunable Architectures and Iodine Capture.

Controllable synthesis of coordination polymer (CP) isomers and revealing their structure-property relationships remain enormous challenges. Three new supramolecular isomers have been synthesized by tuning the poly(ethylene glycol) (PEG) content in the feed. These supramolecular isomers have the same framework formula of [Cu I (tppe)] and different architectures from the classical 2D stacking framework to a 3D entangled system with the coexistence of interpenetration and polycatenation, and a 3D topological framework.

Fluorescent Aromatic Tag-Functionalized MOFs for Highly Selective Sensing of Metal Ions and Small Organic Molecules.

By varying the fluorescent tags of resorcin[4]arene-based tetracarboxylic acids from phenyl to naphthyl, two highly luminescent metal-organic frameworks (MOFs), namely, [Zn2(TPC4A)(DMF)(H2O)4]·3H2O (1) and [(CH3)2NH2]2[Zn(TNC4A)]·4H2O (2), were successfully achieved (TPC4A = 2,8,14,20-tetra-phenyl-6,12,18,24-tetra-methoxy-4,10,16,22-tetra-carboxy-methoxy-resorcin[4]arene and TNC4A = 2,8,14,20-tetra-1-naphthal-6,12,18,24-tetra- methoxy-4,10,16,22-tetra-carboxy-methoxy-resorcin[4]arene). Compound 1 features a unique 2D network, while 2 exhibits a fascinating 3D framework. The highly selective detection of small organic molecules as well as Fe(2+) and Fe(3+) was performed for 1 and 2 as fluorescent sensors.

Analyzing the promoters of two CYP9A genes in the silkworm Bombyx mori by dual-luciferase reporter assay.

Cytochrome P450s (CYPs) are widespread proteins that interact with exogenous chemicals from the diet or the environment. CYP9A subfamily genes are important in the silkworm Bombyx mori. We previously reported transcriptional levels of two CYP9A genes in different tissues and their responses to sodium fluoride (NaF).

ROS-Ca(2+) is associated with mitochondria permeability transition pore involved in surfactin-induced MCF-7 cells apoptosis.

The surfactin can inhibit proliferation and induce apoptosis in cancer cells. Moreover, surfactin can induce cell death in human breast cancer MCF-7 cells through mitochondrial pathway. However, the molecular mechanism involved in this pathway remains to be elucidated.