Preparation and characterization of chitosan/bacterial cellulose nanofibers-based food packaging films blended with aqueous phase from purple passion fruit peel via hydrothermal carbonization.

Purple passion fruit peel (PPFP) is a common biomass waste. Meanwhile, hydrothermal carbonization (HTC) is a common technology used for thermal conversion of biomass waste. Herein, the aqueous phase (AP) of PPFP was determined using HTC, and its properties were studied.

QSAR modeling to describe n-octanol-water partition coefficients of perfluorinated/polyfluorinated alkyl compounds.

The widespread use of perfluoro/polyfluoroalkyl compounds (PFACs) makes it inevitable for them to be released into and affect the environment, and the octanol-water partition coefficient (logK) is a key indicator for evaluating the environmental behavior of trace pollutants and their impact on the environment. However, the determination of logK using experimental means is often time-consuming and laborious, or even unattainable. Therefore, the logKow of 20 per/polyfluoroalkyl compounds obtained from the PubChem database was selected as the object of study, and the 41 chemical descriptors required for modeling were obtained by density-functional theory calculations, and it was found that only two molecular descriptors (A, V) were significantly correlated with the logK, with the correlation of the descriptor A being the was the strongest.

Precise Measurement of the e^{+}e^{-}→D_{s}^{+}D_{s}^{-} Cross Section at Center-of-Mass Energies from Threshold to 4.95 GeV.

Using the e^{+}e^{-} collision data collected with the BESIII detector operating at the BEPCII collider, at center-of-mass energies from the threshold to 4.95 GeV, we present precise measurements of the cross section for the process e^{+}e^{-}→D_{s}^{+}D_{s}^{-} using a single-tag method. The resulting cross section line shape exhibits several new structures, thereby offering an input for a future coupled-channel analysis and model tests, which are critical to understand vector charmonium-like states with masses between 4 and 5 GeV.

NIR-II absorption and photothermal conversion in a photochromic metal-organic framework based on -2,2'-biquinoline-4,4'-dicarboxylate.

A BCA -coordinated MOF (1) was initially discovered to exhibit electron transfer photochromism. Remarkably, the photogenerated radicals (1P) showed a maximum absorption enhancement peak at 1158 nm, resulting from the synergistic effects of planar π-conjugation induced by -coordination and π-π interactions among [BCA]˙˙ radicals, thereby promoting the NIR-II photothermal effect.