[Recent advances in the development and application of effervescence-assisted microextraction techniques].

Effervescence-assisted microextraction (EAM) is a novel sample pretreatment method based on the reaction of CO and H donors to generate CO bubbles and promote rapid dispersion of the extractant. During this process, the unique dispersion method increases the contact area between the target molecule and the extraction solvent, and the adsorption/extraction efficiency of the adsorbent/extractant toward the target molecule is also enhanced. The EAM technique is of particular interest due its convenient application, low running costs, reduced solvent consumption, high extraction efficiency, and environmental friendliness.

Incorporating Fullerenes in Nanoscale Metal-Organic Matrixes: An Ultrasensitive Platform for Impedimetric Aptasensing of Tobramycin.

The rational design and preparation of available fullerene@metal-organic matrix hybrid materials are of profound significance in electrochemical biosensing applications due to their unique photoelectric properties. In this work, C@UiO-66-NH nanocomposites serve as greatly promising materials to modify electrodes and fix aptamers, resulting in a remarkable electrochemical aptasensor for impedimetric sensing of tobramycin (TOB). Nanoscale composites have preferable electroactivity and small particle size with more exposed functional sites, such as Zr(IV) and -NH, to immobilize aptamers for enhanced detection performance.

Reversible Structural Transformation of Cu-Tb Heterometallic MOFs with Highly Efficient Detection Capability toward Penicillin.

A Cu-Tb heterometallic MOF, namely ·DMF, was obtained via a coordination assembly process of isonicotinic acid with Cu and Tb. ·DMF can be switched to ·MeOH in methanol with a luminescent emission response. Meanwhile, ·MeOH exhibits a reversible single-crystal transformation to ·DMF after immersion in DMF.