Boosted Na-MnO supercapacitor performance via strong metal support interaction.

MnO is widely utilized as an electrode material in supercapacitors. However, overcoming challenges such as sluggish ion migration, aggregate tendency, and low conductivity is imperative for optimizing MnO-based supercapacitors. Herein, NaMnO was employed as the Mn precursor to introducing a higher concentration of small Na ions into the layer structure of δ-MnO.

Aggregation-Induced Enhanced Electrochemiluminescence Resonance Energy Transfer Biosensor for Ultrasensitive Detection of Carcinoembryonic Antigen Based on Donor-Acceptor Organic Nanoparticles.

Aggregation-induced electrochemiluminescence (AIECL) combines the merits of aggregation-induced emission (AIE) and electrochemiluminescence (ECL), which has become a research hot spot in recent years. Therefore, we synthesized a novel AIE compound ()-3-(4-(2-butyl-1,3-dioxo-2,3-dihydro-1-benzo[de]isoquinolin-6-yl)phenyl)-2-(4-(1,2,2-triphenylvinyl)phenyl)acrylonitrile (TPENI) with a donor-acceptor (D-A) structure, that is, a simple peripheral modification of 4-(2-butyl-1,3-dioxo-2,3-dihydro-1-benzo[de]isoquinolin-6-yl) benzaldehyde (NI-CHO) with AIE-active tetraphenylethylene (TPE) to achieve the transition of NI-CHO from aggregation-caused quenching (ACQ) to an AIE molecule. When TPENI was in the aggregated state, the luminescence intensity was significantly enhanced due to the TPE structural unit restricting the free rotation of the intramolecular benzene ring, as well as the π-π stacking interactions of the molecules, which was conducive to the preparation of TPENI NPs as ECL materials.

Scale-Up, Continuous and Low-Temperature Production of Multimetal Based Electrocatalysts toward Water Electrolysis.

Electrocatalytic water splitting is a crucial strategy for advancing hydrogen energy and addressing the global energy crisis. Despite its significance, the need for a straightforward and swift method to synthesize electrocatalysts with exceptional performance remains pressing. In this study, we demonstrate a novel approach for the preparation of multimetal-based electrocatalysts in a continuous flow reactor, enabling the quick synthesis of a large number of products through a streamlined process.

Reinforcing Cd-S bonds through morphology engineering for enhanced intrinsic photocatalytic stability of CdS.

Effectively mitigating photocorrosion is paramount for achieving high-efficiency and sustainable hydrogen production through photocatalytic water splitting over CdS. In this work, we develop a morphology engineering strategy with adjustable Cd-S bond energy through a simple chemical bath deposition method to synthesize novel hollow hemispherical CdS (H-CdS). The morphologic structure CdS can be precisely controlled by adjusting the reaction temperature, time and pH.

A sandwich-type photoelectrochemical biosensor based on Ru(bpy) sensitized InS for aflatoxin B detection.

Aflatoxin B (AFB), classified as a class I carcinogen, is a widespread mycotoxin that poses a serious threat to public health and economic development, and the food safety problems caused by AFB have aroused worldwide concern. The development of accurate and sensitive methods for the detection of AFB is significant for food safety monitoring. In this work, a sandwich-type photoelectrochemical (PEC) biosensor for AFB detection was constructed on the basis of an aptamer-antibody structure.

Strong cathode electroluminescence biosensor based on CeO functionalized PCN-222@Ag NPs for sensitive detection of p-Tau-181 protein.

Electrochemiluminescence (ECL) biosensors provide a convenient and high sensitivity method for early disease diagnosis. However, creating luminophore arrays relying on powerful ECL signals remains a daunting task. Porphyrin-centered metal organic frameworks (MOFs) exhibit remarkable potential in ECL sensing applications.

A ZnInS@ReS/AgInS-based photoelectrochemical aptasensor for the ultrasensitive detection of kanamycin.

An ultrasensitive photoelectrochemical (PEC) aptasensor was originally designed by using ZnInS/ReS as a photoactive material and AgInS as a signal amplifier. The signal amplifier AgInS was incubated on the terminal of H-DNA (immobilized on the ZnInS/ReS/FTO surface), leading to an enhanced photocurrent response. Then, due to the introduction of DNA2, the formation of a double-stranded structure caused AgInS to keep away from the electrode surface, and the photocurrent was reduced.

An electrochemiluminescence aptasensor based on highly luminescent silver-based MOF and biotin-streptavidin system for mercury ion detection.

In this study, for the first time, a silver-based metal-organic framework (Ag-MOF) was synthesized and used as the electrochemiluminescence (ECL) emitter for building an ECL sensor. After modification with chitosan (CS) and gold nanoparticles (Au NPs), the ECL stability of Ag-MOF was improved. To detect mercury ions, a biosensor was constructed using the mercury ion aptamer and steric effect of streptavidin.

A photoelectrochemical biosensor based on b-TiO/CdS:Eu/TiC heterojunction for the ultrasensitive detection of miRNA-21.

A novel photoelectrochemical (PEC) biosensor based on b-TiO/CdS:Eu/TiC heterojunction was developed for ultrasensitive determination of miRNA-21. In this device, the b-TiO/CdS:Eu/TiC heterojunction with excellent energy level arrangement effectively facilitated photoelectric conversion efficiency and accelerated the separation of the photogenerated electron hole pairs, which because that the structure of heterojunction overcomes the drawbacks of single material, such as narrow light absorption range, wide band gap, short carrier lifetime, etc., improves light utilization, extends the lifetime of photogenerated electron hole pairs, and promotes electron transfer.

Coupled electrochemiluminescent and resonance energy transfer determination of microRNA-141 using functionalized Mxene composite.

The electrochemiluminescence and resonance energy transfer (ECL-RET) method was adopted to detect miRNAs, in which the two-dimensional TiC Mxenes with high surface area modified with CdS:W nanocrystals (CdS:W NCs) were used as ECL signal emitter. Mxenes with a specific surface area of 5.2755 m/g carried more emitters and promote ECL intensity.

ORAOV 1 Detection Made with Metal Organic Frameworks Based on TiCT MXene.

In this work, a two-dimensional (2D) MOF sheet with electrochemiluminescence (ECL) activity is prepared with TiCT MXene as the metal precursor and the meso-tetra(4-carboxyl-phenyl) porphyrin (HTCPP) as the organic ligand. The atomically thin 2D TiCT MXene is utilized as the metal precursor and soft template to produce the MOF with a 2D nanosheet morphology (TiCT-PMOF). TiCT MXene is a kind of strong electron acceptor, which can deprotonate HTCPP due to the high electronegativity and low work function of its terminal atoms.

An Iron(III)-Based Metal-Organic Gel-Catalyzed Dual Electrochemiluminescence System for Cytosensing and In Situ Evaluation of the VEGF Subtype.

The recent surge of interest in metal-organic gels (MOGs) has emerged for their soft porous structure, large surface area, and abundant active metal sites, making them a promising candidate for building catalyst matrices. In this work, facilely synthesized Fe(III)-organic gel was directly used as a robust electrode matrix. Detailed studies illustrated that their Fe(III) centers can speed up the electro-oxidation/reduction of the HO coreactant to produce reactive oxygen species for enhancing a potential-resolved dual electrochemiluminescence (ECL) emission.

Electrochemiluminescence aptasensor for lincomycin antigen detection by using a SnO/chitosan/g-CN nanocomposite.

In this paper, hydrothermal method was used for the synthesis of SnO quantum dots (QDs). The prepared SnO QDs have a uniform particle size distribution and good electrochemiluminescence (ECL) property. Then the prepared SnO QDs was combined with graphene-like carbon nitride (g-CN) through chitosan to form SnO/chitosan/g-CN nanocomposite and used for detecting the lincomycin.

A label-free photoelectrochemical immunosensor for carcinoembryonic antigen detection based on a g-CN/CdSe nanocomposite.

Herein, a label-free photoelectrochemical immunosensor based on a g-C3N4/CdSe nanocomposite was established and applied to detect carcinoembryonic antigen (CEA). The prepared nanocomposite materials were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet-visible absorption spectroscopy (UV-vis), X-ray photoelectron spectroscopy (XPS), fourier transform infrared spectrometer (FT-IR) and photoluminescence spectroscopy (PL). The results indicate that g-C3N4/CdSe nanocomposite materials were successfully synthesized.

Highly sensitive photoelectrochemical biosensor for microRNA159c detection based on a TiC:CdS nanocomposite of breast cancer.

Herein, an ultra-sensitive photoelectrochemical biosensor based on TiC:CdS nanocomposite was established for the selective detection of microRNA159c. TiC:CdS nanocomposites were used as optoelectronic materials because TiC:CdS interaction effectively separates photogenerated electrons and holes, and significantly improves the high photoelectric conversion efficiency. Firstly, TiC:CdS nanocomposite was deposited on the surface of the fluorine-doped tin oxide (FTO) electrode.

An electrochemiluminescence biosensor for p53 antibody based on Zn-MOF/GO nanocomposite and Ag-DNA amplification.

An ultrasensitive electrochemiluminescence biosensor was established based on the Zn-MOF/GO nanocomposite. Ag(I)-embedded DNA complexes were used as a signal amplification reagent. In this work, 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (TCPP) and Zn were integrated into a porphyrin paddlewheel framework (Zn-MOF) by a hydrothermal method.

Highly sensitive electrochemiluminescence biosensor for VEGF detection based on a g-CN/PDDA/CdSe nanocomposite.

In this work, an electrochemiluminescence (ECL) biosensor was fabricated for the selective detection of vascular endothelial growth factor (VEGF). g-CN/PDDA/CdSe nanocomposites were used as the ECL substrate. Then, DNA labeled at the 5' end with amino groups (DNA) was immobilized on the surface of g-CN/PDDA/CdSe nanocomposite-modified glassy carbon electrode (GCE) by amido linkage.

A silver nanoparticle-assisted signal amplification electrochemiluminescence biosensor for highly sensitive detection of mucin 1.

A novel electrochemiluminescence (ECL) biosensor was developed in this study, which was based on the Ag-NP modified tetrahedral DNA nanostructure. First, a stable and rigid three-dimensional tetrahedral DNA nanostructure (TDN) was modified on a gold electrode, which was used as a capture element. The TDN improves the accuracy and sensitivity of this biosensor.

Electrochemiluminescence immunoassay for the prostate-specific antigen by using a CdS/chitosan/g-CN nanocomposite.

An electrochemiluminescence (ECL) biosensor was fabricated for the evaluation of prostate specific antigen (PSA). The sensor was developed by successively modifying glassy carbon electrode (GCE) electrodes with CdS/Chito/g-CN nanocomposites and DNA1 was labeled at the 5' end with thiol. The aptamer DNA was labeled at the 3' end with a quencher ferrocene (Fc) was ligated to DNA1 by the principle of complementary base pairing.

Synthesis of novel C-doped g-CN nanosheets coupled with CdInS for enhanced photocatalytic hydrogen evolution.

Photocatalytic hydrogen generation from water splitting has become a favorable route for the utilization of solar energy. An effective strategy, the combination of C-doping with nanocomposite semiconductors, is presented in this work. C-doped g-CN (CCN) was prepared by supramolecular self-assembly and subsequently a number of CdInS/CCN composite photocatalysts were designed and fabricated though in situ decoration of CdInS crystals on the surface of CCN nanosheets via a hydrothermal method.

Electrochemiluminescent biosensor with DNA link for selective detection of human IgG based on steric hindrance.

A highly selective DNA-based electrochemiluminescence (ECL) based biosensor is described for the detection of human IgG. It is exploiting the effect of steric hindrance that affects the strength of the ECL signal in the presence of IgG. Digoxin-linked signaling DNA was specifically bound to IgG, and this causes steric hindrance which limits the ability of DNA to hybridize with capturing DNA attached to a gold electrode.

Photoelectrochemical DNA biosensor based on g-CN/MoS 2D/2D heterojunction electrode matrix and co-sensitization amplification with CdSe QDs for the sensitive detection of ssDNA.

A novel enhanced photoelectrochemical (PEC) DNA biosensor, based on a compact heterojunction g-CN/MoS and co-sensitization effect with CdSe quantum dots (QDs), was first proposed for simple and accurate analysis of a short ssDNA. In this work, the g-CN/MoS was successfully synthesized and used as the electrode matrix material to construct PEC biosensor. 2D/2D heterojunction was formed between g-CN and MoS, which could promote the separation of photogenerated electron-hole pairs resulting in an enhanced photocurrent.

TiO/g-CN/CdS Nanocomposite-Based Photoelectrochemical Biosensor for Ultrasensitive Evaluation of T4 Polynucleotide Kinase Activity.

Herein, an efficient photoelectrochemical (PEC) platform was constructed by a cosensitization strategy with a cascade energy level arrangement for the ultrasensitive evaluation of T4 polynucleotide kinase (T4 PNK). Based on CdSe quantum dots (QDs) with an extremely narrow bandgap, this cosensitization strategy offered a highly efficient sensitizer with a matching band-edge level of a ternary TiO/g-CN/CdS nanocomposite. In this protocol, the ternary nanocomposite was first prepared to serve as the matrix to construct the PEC sensing platform.

Synthesis of ultrathin WSe nanosheets and their high-performance catalysis for conversion of amines to imines.

Tungsten diselenide (WSe2) is the material with the lowest thermal conductivity in the world. Most physical methods are used for the synthesis of tungsten diselenide. Here, a simple colloidal method is reported for the synthesis of WSe2 nanosheets.

Enhanced photoelectrochemical DNA sensor based on TiO/Au hybrid structure.

A novel enhanced photoelectrochemical DNA sensor, based on a TiO/Au hybrid electrode structure, was developed to detect target DNA. The sensor was developed by successively modifying fluorine-tin oxide (FTO) electrodes with TiO nanoparticles, gold (Au) nanoparticles, hairpin DNA (DNA1), and CdSe-COOH quantum dots (QDs), which acted as signal amplification factors. In the absence of target DNA, the incubated DNA1 hairpin and the CdSe-COOH QDs were in close contact with the TiO/Au electrode surface, leading to an enhanced photocurrent intensity due to the sensitization effect.