Size-Resolved SERS Detection of Trace Polystyrene Nanoplastics via Selective Electrosorption.

Microplastics and nanoplastics are emerging contaminants that pose a threat to the environment and human. Spectroscopic technologies are advantageous in analyzing nanoplastics, but it is challenging to selectively detect nanoplastics with different size thresholds. In this work, the hyphenated method of electrosorption and surface-enhanced Raman spectroscopy (ES-SERS) was developed for the simple, rapid, and size-resolved analysis of trace polystyrene (PS) nanoplastics from 20 to 300 nm.

Electric Field Promoted Click Surface-Enhanced Raman Spectroscopy for Rapid and Specific Detection of DNA 2-Deoxyribose 5'-Aldehyde Oxidation Products in Plasma.

Rapid identification of DNA oxidative damage sites is of great significance for disease diagnosis. In this work, electric field-regulated click reaction surface-enhanced Raman spectroscopy (e-Click-SERS) was developed aiming at the rapid and specific analysis of furfural, the biomarker of oxidative damage to the 5-carbon site of DNA deoxyribose. In e-Click-SERS, cysteamine-modified porous Ag filaments (cys@p-Ag) were prepared and used as electrodes, amine-aldehyde click reaction sites, and SERS substrates.

The electronic effects of ligands on metal-coordination geometry: a key role in the visual discrimination of dimethylaminopyridine and its application towards chemo-switch.

Due to its special coordination ability to Cu(II)-terpyridine complexes, a simple and straightforward visual recognition of p-DMAP out of its analogues has been realized via selective metallogel collapse. In combination with the selective gel collapse and the self-healing properties of metallohydrogel , its potential application towards chemo-switch is also demonstrated.

Tunable reversible metallo-hydrogels: a new platform for visual discrimination of biothiols.

By using metallo-hydrogel as a new platform, a simple and straightforward selective visual discrimination of cysteine, homocysteine and glutathione from each other as well as from other amino acids has been realized.

Photoresponsive metallo-hydrogels based on visual discrimination of the positional isomers through selective thixotropic gel collapse.

Incorporating the visual discrimination of 2,2'-bipyridine and self-healing properties, a novel photo-switchable metallo-hydrogel system is fabricated using a pincer-type Cu(II) complex and 2,2'-azopyridine.

The effects of unrepaired cleft palate on early language development in Chinese infants.

Objective: To investigate the effects of unrepaired cleft palate on the development of vocabulary comprehension and expression of Chinese children aged 8 to 15 months.

Methods: The parents or caregivers of 40 infants with unrepaired cleft palate were recruited from the Cleft Lip and Palate Center at the Stomatology School of Peking University. Vocabulary development was assessed using a parent report protocol, the Chinese Communicative Development Inventory: Infant, for Putonghua (PCDI: Infant).