Light-Driven Photocatalytic-Photothermal Synergetic System for Portable and Sensitive Nucleic Acid Quantification.

Photosensitizers and photothermal agents have attracted increasing attention for in vitro diagnosis, but the combination remains challenging. Herein, a light-driven photocatalytic-photothermal synergetic system integrated microfluidic distance-based analytical device (PCPT-μDAD) for visual, portable, sensitive, and quantitative detection of targets was developed. Target DNA was recognized and initiated the hybridization chain reaction to form a double-stranded DNA/SYBR Green I (dsDNA/SG-I) complex.

Porous acid-base hybrid polymers for enhanced NH uptake with assistance from cooperative hydrogen bonds.

Carboxylic acid-modified materials are a common means of achieving efficient NH adsorption. In this study, we report that improved NH adsorption capacity and easier desorption can be achieved through the introduction of substances containing Lewis basic groups into carboxylic acid-modified materials. Easily synthesized mesoporous acid-base hybrid polymers were constructed with polymers rich in carboxylic acid and Lewis base moieties through cooperative hydrogen bonding interactions (CHBs).

CuO/Au heterostructure dendrimer anchored on Cu foam as dual functional catalytic nanozyme for glucose sensing by enzyme mimic cascade reaction.

Multifunctional catalytic performance plays a crucial role in bio-applications through the diversity and durability of artificial nanozymes. An effective synergy with sufficient accessible active sites and high specific surface area is a challenge for composite catalysts, especially to avoid uncontrollable aggregation and structural instability. Here, we fabricated a CuO/Au heterostructure dendrimer on copper foam (CuO/Au HD/CF) as dual functional catalytic nanozyme to achieve enzyme mimic cascade reactions for efficient colorimetric analysis.

Tandem Förster resonance energy transfer induced visual ratiometric fluorescence sensing of tetracyclines based on zeolitic imidazolate framework-8 incorporated with carbon dots and safranine T.

Developing new methods for efficiently detecting tetracycline antibiotics in water has gained much importance. In this work, zeolitic imidazolate framework-8 (ZIF-8) was used as a host to encapsulate carbon dots (CDs) and safranine T (ST) during its self-assembly process to synthesize CDs/ST@ZIF-8, which was then applied as the dual-emissive probe for detecting tetracycline antibiotics. Benefiting from the confinement effects of ZIF-8 and its fluorescence enhancement effects toward tetracycline (TC), a unique tandem Förster resonance energy transfer (FRET) system from CDs to TC and then to ST could be established, with a low limit of detection of 46 nM and excellent selectivity.

Bovine serum albumin-coated titanium dioxide modified electrochemical interface for enantioselective discrimination of D/L-aspartic acid.

Due to the similar physicochemical properties, the discrimination of chiral isomers faces huge challenges in drug production and biochemical analysis. Herein, the bovine serum albumin-coated titanium dioxide (bovine serum albumin [BSA]/TiO ) was modified as a novel electrochemical interface for efficient, simple, and enantioselective discrimination of aspartic acid enantiomers (D/L-Asp) based on the electrochemical impedance spectroscopy (EIS). Utilizing the structural characteristics of large cavity and high specific surface area, TiO material provided sufficient space for adequate loading of BSA.

A novel ratiometric fluorescent probe for water content in ethanol and temperature sensing.

In this paper, two tetrahydo[5]helicene-based dyes (THH1 and THH2) were studied on their twist intramolecular charge transfer. And the water-soluble blue carbon dots (N-CDs) were synthesized. Considering that their different optical propeties, the ratiometric fluorescence probes N-CDs/THH1 and N-CDs/THH2 were constructed by mixing N-CDs and dyes simply.