A bifunctional luminescence sensor for biomarkers detection in serum and urine based on chemorobust Nickel(II) metal-organic framework.

The rapid detection of biomarkers in bodily fluids is vital for clinical diagnosis and regular disease monitoring. In this work, a mixed-ligand strategy was employed to successfully construct a nickel(II) metal-organic framework ([Ni(HTPTC)(bib)(HO)], NiMOF). Outstanding thermal and chemical stabilities coupled with the favorable luminescent performances endow NiMOF significant potential as an ideal bifunctional luminescence sensor with high selectivity and sensitivity, exceptional anti-interferences and recyclable performances, as well as low LODs for detecting 3-NT biomarker through "turn-off" luminescence quenching effects and HA biomarker through "turn-on" luminescence enhancement effects.

Chemorobust dye-encapsulated framework as dual-emission self-calibrating ratiometric sensor for intelligent detection of toluene exposure biomarker in urine.

By taking advantages of confinement effect can effectively prevent dye aggregation caused luminescent quenching, Eosin Y (EY) was encapsulated into a chemorobust porous CoMOF as secondary fluorescent signal to construct the dual-emitting sensor of EY@CoMOF. And the photo-induced electron transfer from CoMOF to EY molecules induced EY@CoMOF presenting a weak blue emission at 421 nm and a strong yellow emission at 565 nm. Those dual-emission features also endow EY@CoMOF itself great potentials as a self-calibrating ratiometric sensor in visually and efficiently monitoring hippuric acid (HA) in urine, with fast response, high sensitivity and selectivity, excellent recyclable, and low LOD (0.

Eu(III)-Functionalized MOF-Based Dual-Emission Ratiometric Sensor Integrated with Logic Gate Operation for Efficient Detection of Hippuric Acid in Urine and Serum.

With the introduction of Eu ions as the secondary fluorescent signal reporter and sensing active sites, a dual-emission ratiometric sensor of (Eu functional ) for hippuric acid (HA) detection in urine and serum was fabricated the postsynthetic encapsulating strategy. Based on the two emission signals at 441 nm (turn-on) and 628 nm (turn-off), the produced ratiometric sensor provided enhanced sensitivity, higher selectivity, and 9.7 times lower limits of detection (LOD) for the detection of HA (2.

A composite triboelectric nanogenerator based on flexible and transparent film impregnated with ZIF-8 nanocrystals.

The triboelectric nanogenerator (TENG), based on the triboelectrification coupled with electrostatic induction, can directly convert ambient mechanical energy into electric energy. However, the output performance of TENG is still low and demands further improvement to speed up the commercial application. In this work, we demonstrate a TENG based on a flexible and transparent composite film made of PDMS and ZIF-8.

Enhanced NO gas sensing of a single-layer MoS by photogating and piezo-phototronic effects.

NO sensors with ultrahigh sensitivity are demanded for future electronic sensing systems. However, traditional sensors are considerably limited by the relative low sensitivity, high cost and complicated process. Here, we report a simply and reliable flexible NO sensor based on single-layer MoS.

Piezotronic Effect Enhanced Flexible Humidity Sensing of Monolayer MoS.

We report the piezotronic effect on the performance of humidity detection based on a back-to-back Schottky contacted monolayer MoS device. By introducing an upswept mechanical strain, the in-plane electrical polarization can be induced at the MoS/metal junction region. The polarization charges can modify the Schottky barrier height at the interface of MoS/metal junction, subsequently improving the sensitivity of the humidity sensing.

Magnetic-Induced-Piezopotential Gated MoS Field-Effect Transistor at Room Temperature.

Utilizing magnetic field directly modulating/turning the charge carrier transport behavior of field-effect transistor (FET) at ambient conditions is an enormous challenge in the field of micro-nanoelectronics. Here, a new type of magnetic-induced-piezopotential gated field-effect-transistor (MIPG-FET) base on laminate composites is proposed, which consists of Terfenol-D, a ferroelectric single crystal (PMNPT), and MoS flake. When applying an external magnetic field to the MIPG-FET, the piezopotential of PMNPT triggered by magnetostriction of the Terfenol-D can serve as the gate voltage to effectively modulate/control the carrier transport process and the corresponding drain current at room temperature.

Core-Shell-Yarn-Based Triboelectric Nanogenerator Textiles as Power Cloths.

Although textile-based triboelectric nanogenerators (TENGs) are highly promising because they scavenge energy from their working environment to sustainably power wearable/mobile electronics, the challenge of simultaneously possessing the qualities of cloth remains. In this work, we propose a strategy for TENG textiles as power cloths in which core-shell yarns with core conductive fibers as the electrode and artificial polymer fibers or natural fibrous materials tightly twined around core conductive fibers are applied as the building blocks. The resulting TENG textiles are comfortable, flexible, and fashionable, and their production processes are compatible with industrial, large-scale textile manufacturing.

Crystalline capsules: metal-organic frameworks locked by size-matching ligand bolts.

Metal-organic frameworks (MOFs) are shown to be good examples of a new class of crystalline porous materials for guest encapsulation. Since the encapsulation/release of guest molecules in MOF hosts is a reversible process in nature, how to prevent the leaching of guests from the open pores with minimal and nondestructive modifications of the structure is a critical issue. To address this issue, we herein propose a novel strategy of encapsulating guests by introducing size-matching organic ligands as bolts to lock the pores of the MOFs through deliberately anchoring onto the open metal sites in the pores.

A flexible zwitterion ligand based lanthanide metal-organic framework for luminescence sensing of metal ions and small molecules.

A new lanthanide metal-organic framework was constructed using a tripodal flexible zwitterion ligand (H3LBr3) which takes a chair-shaped configuration. The luminescence of the compound displays highly selective sensing of the Fe(3+) ion and nitrobenzene.

In vitro controlled release of theophylline from metal-drug complexes.

Two new metal-drug complexes constructed from non-toxic zinc and theophylline (TPL), an anti-asthmatic active drug, have been introduced into a release system based on matrices of hydroxypropylmethylcellulose (HPMC) and microcrystalline cellulose (MC). The release rate of TPL from the metal-drug complexes could be controlled by the amount of MC added, and the release mechanism changed from anomalous transport to Fickian diffusion.

Chiral uranyl-organic compounds assembled with achiral furandicarboxylic acid by spontaneous resolution.

Influenced by different cations in the self-assembly of chiral units, achiral (UOC-NH4, UOC-Ca) and chiral (UOC-Na) uranyl-organic compounds were obtained from achiral reactants. The photocatalytic activity of UOC-Na was also investigated.