Here, we report the design, synthesis, and functional testing of enzyme-powered porous micromotors built from a metal-organic framework (MOF). We began by subjecting presynthesized microporous UiO-type MOF to ozonolysis, confer it with mesopores sufficiently large adsorb host enzyme catalase (size: 6-10 nm). then encapsulated inside mesopores, observing that they are hosted in those located at subsurface crystals. In presence H2O2 fuel, motors (or MOFtors) exhibit jet-like propulsion enabled...

A water-stable and pH-independent sensor for qualitative quantitative detection of nicotine in urine solution living cell was successfully developed. This material, named MB@UiO-66-NH2, can be synthesized by encapsulating methylene blue (MB) with a well-known metal-organic framework (MOF) UiO-66-NH2 through simple impregnation method. The fluorescence intensity the system significantly enhanced when certain amount added. In meanwhile, MB is reduced reductive to form leucomethylene (LB)....

Herein, we present a novel methodology for synthesizing metal clusters or secondary building units (SBUs) that are subsequently employed to construct innovative metal-organic frameworks (MOFs) via dynamic covalent chemistry. Our approach entails extraction of SBUs from preformed MOFs through complete disassembly by clip-off The initial MOF precursor is designed incorporate the desired SBU, connected exclusively cleavable linkers (in this study, with olefinic bonds). Cleavage all organic...

Metal-organic frameworks (MOFs) possess high CO2 adsorption properties and are considered to be a promising candidate for the electrochemical carbon dioxide reduction reaction (eCO2RR). However, their insufficient selectivity current density constrain further exploration in eCO2RR. In this work, by introducing very small proportion of 2,5-dihydroxyterephthalic acid (DOBDC) into ZIF-8, surface modified ZIF-8-5% catalyst was synthesized post-modification method, exhibiting enhanced (from 56%...

Isoreticular chemistry, in which the organic or inorganic moieties of reticular materials can be replaced without destroying their underlying nets, is a key concept for synthesizing new porous molecular and tuning functionalization pores. Here, we report that rational cleavage covalent bonds metal-organic framework (MOF) trigger isoreticular contraction, need any additional linkers. We began by two novel MOFs based on MIL-142 family, (In)BCN-20B (Sc)BCN-20C, include cleavable as well...

We describe a highly sensitive chemical sensor for the detection of hydrazine hydrate. The was synthesized by simply doping UiO-66 type metal-organic framework (MOF) with Eu3+ through well-known post-synthetic modification method. Eu3+@MOF characterized powder X-ray diffraction (PXRD), nitrogen gas adsorption isotherm measurements, FTIR, and ICP-MS. This luminescent probe exhibits strong emission intensity, more significantly, displays various merits, such as high selectivity notable...

Bond breaking is an essential process in chemical transformations and the ability of researchers to strategically dictate which bonds a given system will be broken translates greater synthetic control. Here, we report extending concept selective bond reticular materials new approach that call Clip-off Chemistry. We show bond-breaking these structures can controlled at molecular level; periodic, quantitative, selective; effective reactions performed either solid or liquid phases; occur...

The single-crystal-to-single-crystal (SCSC) transformations of metal-organic frameworks (MOFs) are fascinating because we can directly observe the change crystal structure during transformation process. It also greatly helps to understand delicate interaction between guest molecules and skeleton framework therefore fosters a deep understanding gas storage separation within frameworks. Herein, report two novel MOFs, [Cu8(BCB)4(μ3-OH)2(μ3-O)(H2O)8(Py)5]·16DMF·52H2O (1)...

Clip-off Chemistry is a synthetic strategy that our group previously developed to obtain new molecules and materials through selective cleavage of bonds. Herein, we report recent work expand by introducing into it retrosynthetic analysis step that, based on virtual extension the products cleavable bonds, enables one define required precursor materials. As proof-of-concept, have validated approach synthesising characterising four aldehyde-functionalised Rh(II)-based complexes: homoleptic...

A novel inhibition-based amperometric biosensor of horseradish peroxidase (HRP) for phenylhydrazine detection is described. The multilayer-film modified sensor prepared by a layer-by-layer deposition concanavalin (Con A) and HRP on glassy carbon electrode (GCE), which forced the bioaffinity between Con mannose residues surface molecule. Hydroquinone chosen as electron mediator in system. performance optimum experimental conditions are studied. lower limit 1.7 × 10−6 M, linear response range...

Opportunistic networks take full advantage of opportunistic encounters among nodes to transfer packets. According the characteristics limited energy and frequent link variation in networks, we introduce a novel routing metric that comprehensively takes into consideration consumption nodes, probability relay meeting their destination, time‐to‐live packet, approximate number packet copies. Based on this metric, propose controllable multi‐replica approach which single‐branch diffusion strategy...

Abstract Inositol hexaphosphate (IP 6 ) molecules as an environmentally friendly inhibitor were self‐assembled at a bare iron surface forming monolayers from low concentration solution. Roughening of the by special oxidation–reduction cycle makes it possible to obtain surface‐enhanced Raman scattering (SERS) mapping spectra (SAMs) IP . Using recorded SERS and quantum chemistry calculations for vibrational modes molecule with PM3 method, adsorption configurations SAMs formed roughened in bulk...

In this work, a neoteric photoelectrochemistry (PEC) sensor on account of perylenediimide (PDI) by coupling with ascorbic acid (AA) responsive decomposition cobalt oxyhydroxide (CoOOH) nanosheets was developed. PDI is kind organic photoelectric material strong photoelectrochemical properties in aqueous solution. When the surface modified CoOOH, could be effectively decreased. However, when AA present, CoOOH reduced to Co 2+ while are restored. The constructed thereby exhibits high...

Herein, we report how merging and clipping nets in metal–organic frameworks (MOFs) can be controlled a single-crystal-to-single-crystal fashion using three different approaches─the merged net, clip-off chemistry, linker reinstallation─to design synthesize three- two-merged net MOFs. Initially, show the formation of isoreticular three-merged MOFs by linking trimeric Sc3+ cluster, Sc3(μ3-Ο)(−COO)6, with ditopic zigzag tritopic linkers. The resulting exhibit edge-transitive nets─kgd + hxl...

Abstract Clip‐off Chemistry is a synthetic strategy that our group previously developed to obtain new molecules and materials through selective cleavage of bonds. Herein, we report recent work expand by introducing into it retrosynthetic analysis step that, based on virtual extension the products cleavable bonds, enables one define required precursor materials. As proof‐of‐concept, have validated approach synthesising characterising four aldehyde‐functionalised Rh(II)‐based complexes:...

In mobile opportunistic networks (MONs), human-carried devices such as PDAs and smartphones, with the capability of short range wireless communications, could form various intermittent contacts due to mobility humans, then use contact opportunity communicate each other. The dynamic changes network topology are closely related human patterns. this paper, we propose a social motivation-aware model for MONs, which explains basic laws from psychological point view. We analyze motivations mainly...

Bond-breaking is an essential process in natural and synthetic chemical transformations. Accordingly, the ability for researchers to strategically dictate which bonds a given system are broken translates greater control, as historically evidenced fields such organic synthesis. Here, we report extending concept of selective bond-breaking reticular materials, new approach that call Clip-off Chemistry. We show these structures can be controlled at molecular level; periodic, quantitative...

The synthesis of new molecules and materials does not always involve creating bonds. In their Research Article (e202310354), Jorge Albalad, Inhar Imaz, Daniel Maspoch et al. show how bond scission becomes a powerful synthetic tool to design when the cleavage step is quantitative, selective, carefully controlled. As proof-of-concept, unprecedented Rh(II)-based architectures (clusters, crown, macrocycle) were obtained through retrosynthetic disassembly metal–organic polyhedra (MOPs) via...