Single-Electrode Electrochemiluminescence System for High-Throughput Visual Analysis of Chloramphenicol.

To achieve high-throughput visual detection, an innovative single-electrode multiarray electrochemiluminescence (SE-ECL) biosensing and mobile phone imaging platform is developed. For the first time, Au-luminol was applied to a single-electrode, eight-hole ECL array. The high-intensity luminophor of luminol combined with smartphone imaging technology supports synchronous ECL detection of multiple reaction units, increasing the detection flux to 8 times that of traditional methods while maintaining the signal consistency of each unit.

Crystallographic Visualization of Distinct Iodic Aggregations in Isostructural Metal-Organic Frameworks.

Precisely determining the location of adsorbed molecules is essential for illuminating the mechanisms underlying molecular confinement within porous metal-organic frameworks (MOFs). Here, we present the pore-filling and reactive adsorption of iodine in ALP-MOF-1 and its isostructural redox-active ALP-MOF-2. The adsorbed iodine molecules (I) are unaffected by Zn(II) in ALP-MOF-1 and are exclusively confined into an unusual three-dimensional (3D) iodine aggregation due to the 3D cross-linked pore topology and multiple I-framework interactions.

Bright Semiconductor Quantum Dots Shed New Light on Precision Nanomedicine for Various Diseases.

Nanomaterials with diagnostic and therapeutic functions have exciting potential to reshape the landscape of precision medicine. Impressive progress has been made toward the design and production of innovative theranostic nanomaterials that improve disease care, motivated by their ability to simultaneously provide diagnostic information and therapeutic benefits. Herein, the state-of-the-art theranostic semiconductor quantum dots (QDs) are summarized, and the diverse types of QDs designed for the diagnosis and treatment of different diseases are discussed.

Biosynthesis of ()-(+)-perillyl alcohol by expressing neryl pyrophosphate synthase.

()-(+)-perillyl alcohol is widely used in agricultural and anticarcinogenic fields. Microbial production of ()-(+)-perillyl alcohol was investigated in this study. We optimized biosynthesis of ()-(+)-perillyl alcohol in by using neryl pyrophosphate synthase and NADPH regeneration.

Advances in metal graphitic nanocapsules for biomedicine.

Metal graphitic nanocapsules have the advantages of both graphitic and metal nanomaterials, showing great promise in biomedicine. On one hand, the chemically inert graphitic shells are able to protect the metal core from external environments, quench the fluorescence signal from the biological system, offer robust platform for targeted molecules or drugs loading, and act as stable Raman labels or internal standard molecule. On the other hand, the metal cores with different compositions, sizes, and morphologies show unique physicochemical properties, and further broaden their biomedical functions.

An Integrated Chemiluminescence Microreactor for Ultrastrong and Long-Lasting Light Emission.

A porous metal-organic framework [Ba(H )·DMF·HO]·2DMF () (H = 4',4'''-(2,3,6,7-tetramethoxyanthracene-9,10-diyl)bis([1,1'-biphenyl]-3,5-dicarbo-xylic acid N,N-Dimethylformamide [DMF]), which can act as an excellent chemiluminescence microreactor, is designed and constructed. In the framework of , the catalytic Ba cluster and electron-rich anthracene fluorescent centers are fixed and interconnected in an orderly fashion, and this can shorten the energy transfer path and weaken the relaxation of the chemiluminescence process. Meanwhile, the rhombic channels of can provide a proper diffusion ratio of reactants to support a stable and continuous energy supply.

Desulfurization Efficiency Preserved in a Heterometallic MOF: Synthesis and Thermodynamically Controlled Phase Transition.

Efficient removal of heterocyclic organosulfur compounds from fuels can relieve increasingly serious environmental problems (e.g., gas exhaust contaminants triggering the formation of acid rain that can damage fragile ecological systems).

Porous Organic Frameworks: Advanced Materials in Analytical Chemistry.

Porous organic frameworks (POFs), a general term for covalent-organic frameworks (COFs), covalent triazine frameworks (CTFs), porous aromatic frameworks (PAFs), etc., are constructed from organic building monomers with strong covalent bonds and have generated great interest among researchers. The remarkable features, such as large surface areas, permanent porosity, high thermal and chemical stability, and convenient functionalization, promote the great potential of POFs in diverse applications.

Development of Sulfonic-Acid-Functionalized Mesoporous Materials: Synthesis and Catalytic Applications.

Sulfonic acid based mesostructures (SAMs) have been developed in recent years and have important catalytic applications. The primary applications of these materials are in various organic synthesis reactions, such as multicomponent reactions, carbon-carbon bond couplings, protection reactions, and Fries and Beckman rearrangements. This review aims to provide an overview of the recent developments in the field of SAMs with a particular emphasis on the reaction scope and advantages of heterogeneous solid acid catalysts.

Synthesis of Hollow Co-Fe Prussian Blue Analogue Cubes by using Silica Spheres as a Sacrificial Template.

Herein, we report a novel method for the formation of hollow Prussian blue analogue (CoFe-PBA) nanocubes, using spherical silica particles as sacrificial templates. In the first step, silica cores are coated by a CoFe-PBA shell and then removed by etching with hydrofluoric acid (HF). The cubic shape of CoFe-PBA is well-retained even after the removal of the silica cores, resulting in the formation of hollow CoFe-PBA cubes.

Sub-50 nm Iron-Nitrogen-Doped Hollow Carbon Sphere-Encapsulated Iron Carbide Nanoparticles as Efficient Oxygen Reduction Catalysts.

Sub-50 nm iron-nitrogen-doped hollow carbon sphere-encapsulated iron carbide nanoparticles (FeC-Fe,N/C) are synthesized by using a triblock copolymer of poly(styrene--2-vinylpyridine--ethylene oxide) as a soft template. Their typical features, including a large surface area (879.5 m g), small hollow size (≈16 nm), and nitrogen-doped mesoporous carbon shell, and encapsulated FeC nanoparticles generate a highly active oxygen reduction reaction (ORR) performance.

A Carbon- and Binder-Free Nanostructured Cathode for High-Performance Nonaqueous Li-O Battery.

Operation of the nonaqueous Li-O battery critically relies on the reversible oxygen reduction/evolution reactions in the porous cathode. Carbon and polymeric binder, widely used for the construction of Li-O cathode, have recently been shown to decompose in the O environment and thus cannot sustain the desired battery reactions. Identifying stable cathode materials is thus a major current challenge that has motivated extensive search for noncarbonaceous alternatives.