Absolutely Structural Disorder Boosting Bandwidth toward Full-Spectrum White Light from Single Occupancy of Activator.

Achieving single-phase full-spectrum white light (SFWL) phosphors is a central goal in the optical field because they simplify white-LEDs assembly and avoid long-term color instability. Despite many approaches are developed, current SFWL phosphors still suffer from chromaticity drift due to inconsistent thermal quenching of multiple emitting centers. Herein, an absolutely structural disorder strategy is established to develop a single-emitting center-based SFWL phosphor.

VR-Based Innovation of the Ideological and Political Teaching Mode in Colleges.

The current ideological and political (IAP) teaching has some disadvantages, such as emphasizing theoretical form over practical teaching, students' differences in personality and cognition, and lack of interaction between teachers and students. Therefore, this paper first analyzes IAP teaching based on VR communication and summarizes the disadvantages of current IAP teaching and the application advantages of VR technology. Based on the principles of interactivity, practicality, and richness, the IAP teaching system is constructed based on the double-center teaching mode, and the teaching content are designed.

Near-Infrared Light-Induced Photoresponse in Er/Li-Codoped YO/Poly(methyl methacrylate) Composite Film.

We demonstrate Li-doping engineering for improving the near-infrared (NIR) photoresponse in an Er-activated YO phosphor. We show that the rational incorporation of Li results in a large enhancement of the upconversion (UC) emission intensity up to 29 times upon excitation of NIR light. The improved UC properties could be associated with the enhanced dipole-dipole transition probability due to Li-induced changes in the local site symmetry for Er ions and improvement in the crystallinity of the samples.

Azaphilone derivatives with anti-inflammatory activity from the mangrove endophytic fungus Penicillium sclerotiorum ZJHJJ-18.

Nine undescribed azaphilone derivatives, sclerazaphilones A-H (1-9), and three known analogues (10-12), were obtained and identified from the fermented rice cultures of a mangrove endophytic fungus Penicillium sclerotiorum ZJHJJ-18. 1D and 2D NMR, HRESIMS and spectral data indicated the chemical structures of 1-9, and their absolute configurations were assigned by experimental and computational analyses of electronic circular dichroism (ECD) spectra, and application of the chemical transformations. Compounds 1-4 were the first reported N-containing azaphilone derivatives with 5/6 dicyclic core.

Furobenzotropolones A, B and 3-Hydroxyepicoccone B with Antioxidative Activity from Mangrove Endophytic Fungus MLY-3.

Three new metabolites, furobenzotropolones A, B (-) with unusual benzene and dihydrofuran moieties and 3-hydroxyepicoccone B (), together with seven known compounds (-) were obtained from the endophytic fungus MLY-3 isolated from the fresh leaf of mangrove plant collected from Zhuhai. Their structures were assigned by the analysis of UV, IR, NMR, and mass spectroscopic data. Compound was further confirmed by single-crystal X-ray diffraction experiment using Cu K radiation.

High-Resolution Genome-wide Association Study Identifies Genomic Regions and Candidate Genes for Important Agronomic Traits in Wheat.

Wheat (Triticum aestivum) is a major staple food crop worldwide. Genetic dissection of important agronomic traits is essential for continuous improvement of wheat yield to meet the demand of the world's growing population. We conducted a large-scale genome-wide association study (GWAS) using a panel of 768 wheat cultivars that were genotyped with 327 609 single-nucleotide polymorphisms generated by genotyping-by-sequencing and detected 395 quantitative trait loci (QTLs) for 12 traits under 7 environments.

(-)- and (+)-Asperginulin A, a Pair of Indole Diketopiperazine Alkaloid Dimers with a 6/5/4/5/6 Pentacyclic Skeleton from the Mangrove Endophytic Fungus sp. SK-28.

A pair of enantiomeric indole diketopiperazine alkaloid dimers [(-)- and (+)-asperginulin A ( and )] with an unprecedented 6/5/4/5/6 pentacyclic skeleton were isolated from the mangrove endophytic fungus sp. SK-28. The enantiomeric dimers were separated by chiral-phase HPLC.

New Benzofuranoids and Phenylpropanoids from the Mangrove Endophytic Fungus, sp. ZJ-68.

Three new benzofuranoids, asperfuranoids A-C (-), two new phenylpropanoid derivatives ( and ), and nine known analogues (, , and -) were isolated from the liquid substrate fermentation cultures of the mangrove endopytic fungus sp. ZJ-68. The structures of the new compounds were determined by extensive spectroscopic data interpretation.

Ophiobolin-Type Sesterterpenoids from the Mangrove Endophytic Fungus sp. ZJ-68.

Eleven new ophiobolin-type sesterterpenoids, asperophiobolins A-K (-), along with 12 known analogues (-) were isolated from the cultures of the mangrove endophytic fungus sp. ZJ-68. The structures of the new compounds were elucidated through spectroscopic analyses, and their absolute configurations were assigned by a combination of Mo(AcO)-induced electronic circular dichroism spectra and quantum chemical calculations.