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We reported a colorimetric paper-based device by integrating the modified acid RNA-cleaving DNAzymes (MaRCD-EC1) for highly sensitive (detection limit = 102 CFU mL−1), and rapid (within 30 min) detection of E. coli without amplification. This device exhibited a clinical sensitivity of 100% and a specificity of 100% in identifying E. coli-associated urinary tract infections (UTIs) using the clinical urine samples. [ABSTRACT FROM AUTHOR]

Herein, we demonstrated the unique advantage of a mechanochemical reaction to prepare a salt with hard and soft acid and base ions concurrently by solution synthesis owing to the soft acid preferring to combine with the soft base and vice versa. We prepared Bu4N1−xLixMnxPb1−xI3 (x = 0.011−0.14) by mechanochemical synthesis. The doping induced a structural phase transition at ∼342 K and much enhancement of ionic conduction above 342 K for all co-doped hybrids regarding Bu4NPbI3 because of the voids around the Mn2+/Li+ ions by doping. [ABSTRACT FROM AUTHOR]

Detection and characterization of DNA damage plays a critical role in genotoxicity testing, drug screening, and environmental health. We developed a fully integrated origami paper-based analytical device (oPAD) for measuring DNA damage. This simple device allows on-paper cell lysis, DNA extraction, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) reaction and signal readout with simple operation steps, enabling rapid (within 30 min) and high throughput assessment of multiple DNA damages induced by exogenous chemical agents. [ABSTRACT FROM AUTHOR]

In this study, a multi-step phase transition hybrid composed of (Pr-dabco)2Ag4I6 clusters (Pr-dabco+ = 1-propyl-1,4-diazabicyclo[2.2.2]octan-1-ium) has been prepared and characterized by microanalysis, IR and UV-vis spectroscopy, TG and DSC techniques, etc. This hybrid is thermally stable up to ∼486 K with five phases in the temperature region below 486 K. The phase transition shows symmetry breaking (SB) character between phases II (space group P21/c) and III (space group Pa3¯), while inverse symmetry breaking (ISB) between phases II and I (space group Pbca), and it is rather exceptional for matter to exhibit simultaneously SB and ISB nature in two successive phase transitions. Most importantly, each phase transition is associated with a dielectric anomaly, and phase V appears to be a plastic crystal with extra high ac conductivity (>10−2 S cm−1). Our work opens up new avenues to find a multi-phase transition material in silver halide hybrids. [ABSTRACT FROM AUTHOR]

A novel and efficient dual catalysis approach by concurrent activation of glycals and (o-azaaryl)-carboxaldehydes using palladium and N-heterocyclic carbene has been developed. The two electrophiles could react after activation through formation of the Breslow intermediate and a π-allyl Pd complex, widening the scope of reacting glycosylation partners and opening up possibilities for future glycosylation. [ABSTRACT FROM AUTHOR]

An efficient coupling reaction of allyl acetate with (O-azaaryl)-carboxaldehyde by Pd-NHC dual catalysis has been developed. This reaction proceeds via direct coordination between the ortho nitrogen atom in the heterocycle and Pd(0). This dual catalysis is achieved under mild conditions to give 1,4-diones as products with up to 90% yield. [ABSTRACT FROM AUTHOR]

A concise and highly efficient strategy for the synthesis of N-glycosyl imidazole analogues is reported. This reaction is based on a palladium catalysed decarboxylative allylation and three steps, namely, carbamation, decarboxylation and allylation are involved. All the substrates can afford the desired products with excellent yields and selectivities. [ABSTRACT FROM AUTHOR]

Allylic rearrangement or the migration of a double bond from its original position in the carbon skeleton to an adjacent site was observed when 3,4,5,6-tetrahydrophthalate was hydrolyzed in a basic solution and in the presence of Co(ii) and Mn(ii) under hydrothermal conditions. [ABSTRACT FROM AUTHOR]

By virtue of planar Cu2(μ-OH)22+ cluster units, a flexible porous metal azolate framework not only adsorbs large amounts of CO2 (19.6 wt% or 266 g L−1 at 298 K and 1 atm) with a high zero-coverage adsorption enthalpy (−47 kJ mol−1), but also desorbs quickly at very low temperatures. [ABSTRACT FROM AUTHOR]

A novel silver-promoted three-component reaction toward the synthesis of multifunctionalized pyrroles has been developed. This reaction involves an unusual imidazole ring decomposition, presumably via1,5-isomerization and subsequent hydrolysis. [ABSTRACT FROM AUTHOR]

Ultrathin silica-based nanosheets with a thickness of ∼1 nm are fabricated in a low-cost and high-yield system excluding alkali metal ions. Unlike the Na-zeolites with a long capillary and microporous structure, the ultrathin nanosheets exhibit highly effective surface and active sites. As a result, the 0.4 wt% Pt-loaded nanosheets exhibit superior catalytic activity in H2O2decomposition with an O2evolution rate of 342.5 mL g−1min−1in a clean aqueous system. [ABSTRACT FROM AUTHOR]

Solvothermal reaction of CoSO4with 2,6-di-p-carboxyphenyl-4,4′-bipyridine affords a novel, octacobalt cluster based, (3,12)-connected porous framework, which exhibits gas sorption and spin-glassy magnetic behaviour. [ABSTRACT FROM AUTHOR]

A porous ionic/molecular crystal composed of discrete triakis tetrahedral Co8clusters with an ideal Tdsymmetry shows interesting magnetism and porosity. [ABSTRACT FROM AUTHOR]