Nitrate-Anion-Induced Formation of a 2D Metal-Organic Framework with an Unconventional Kagomé Lattice Exhibiting Methanol-Mediated Ketone Catalysis.

Metal-organic frameworks (MOFs) with kagomé lattice are attractive for their unique physical and chemical properties, but little attention has been paid to their catalytic properties. Herein, we report a 2D MOF based on a phosphonato-amino-carboxylate ligand (NaHL), i. e.

Layered lanthanide phosphonates Ln(2-qpH)(SO)(HO) (Ln = La, Ce, Pr, Nd, Sm): polymorphism and magnetic properties.

Polymorphic layered lanthanide coordination polymers provide opportunities to study the effect of intralayer and interlayer interactions on their magnetic dynamics. Herein we report a series of layered lanthanide phosphonates, namely, α-Ln(2-qpH)(SO)(HO) (Ln = Sm) (α-Ln), β-Ln(2-qpH)(SO)(HO) (Ln = Pr, Nd, Sm) (β-Ln) and γ-Ln(2-qpH)(SO)(HO) (Ln = La, Ce, Pr, Nd, Sm) (γ-Ln) (2-qpH = 2-quinolinephosphonic acid), which crystallize in monoclinic 2/ (α-Ln), triclinic 1̄ (β-Ln) and orthorhombic (γ-Ln) space groups, respectively. The structural differences between the β- and γ-phases lie not only in the intralayer but also in the interlayer.

Photo-responsive Single-Molecule Magnet Showing 0D to 1D Single-Crystal-to-Single-Crystal Structural Transition and Hysteresis Modulation.

Photo-responsive lanthanide-based single-molecule magnets (SMM) hold great promise for future switching and memory devices. Herein, we report a dysprosium phosphonate [Dy (SCN) (NO )(depma) (4-hpy) ] (1Dy), which features a supramolecular framework containing layers of hydrogen-bonding network and pillars of π-π interacted anthracene units. The photocycloaddition reaction of anthracene pairs led to a rapid and reversible single-crystal-to-single-crystal (SC-SC) structural transition to form the 1D coordination polymer [Dy (SCN) (NO )(depma )(4-hpy) ] (2Dy), accompanied by photoswitchable SMM properties with the reduction of effective energy barrier by half and the narrowing of the butterfly-like hysteresis loop.

Polymorphism modulates photoluminescence and magnetic dynamics of mononuclear dysprosium-anthracene complexes.

Complexes α-Dy(depma)Cl (α-DyCl), β-Dy(depma)Cl (β-DyCl) and β-Dy(depma)Br (β-DyBr) (depma = 9-diethylphosphono-methylanthracene) are reported. α-DyCl and β-DyCl are polymorphs showing distinct magnetic dynamics with energy barriers of 32.3 K and 66.

Photocontrollable Magnetism and Photoluminescence in a Binuclear Dysprosium Anthracene Complex.

By incorporating photoreactive anthracene moieties into binuclear DyO motifs, we obtain two new compounds with the formulas [Dy(SCN)(L)(dmpma)] () and [Dy(SCN)(L)(dmpma)(CHCN)] (), where HL is 4-methyl-2,6-dimethoxyphenol and dmpma is dimethylphosphonomethylanthracene. Compound contains face-to-face π-π interacted anthracene groups that meet the Schmidt rule for a [4 + 4] photocycloaddition reaction, while stacking of the anthracene groups in compound does not meet the Schmidt rule. Compound undergoes a reversible single-crystal-to-single-crystal structural transformation upon UV-light irradiation and thermal annealing, forming a one-dimensional coordination polymer of [Dy(SCN)(L)(dmpma)(dmpma)] ().

Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.).

To develop superior rice varieties with improved yield in most rainfed areas of Asia/Africa, we started an introgression-breeding program for simultaneously improving yield and tolerances of multiple abiotic stresses. Using eight BC1 populations derived from a widely adaptable recipient and eight donors plus three rounds of phenotypic selection, we developed 496 introgression lines (ILs) with significantly higher yield under drought, salt and/or non-stress conditions in 5 years. Six new varieties were released in the Philippines and Pakistan and many more are being evaluated in multi-location yield trials for releasing in several countries.

A new copper species based on an azo-compound utilized as a homogeneous catalyst for water oxidation.

A new azo-complex [(L)Cu(II)(NO3)] [L = (E)-3-(pyridin-2-yldiazenyl)naphthalen-2-ol (HL)], was prepared via a one-pot synthetic method at 60 °C and was structurally characterized by IR, EA, PXRD and single crystal X-ray diffraction. In addition, TGA studies indicated that the complex was stable in air. The redox properties were determined by cyclic voltammetry, which revealed that the complex could be utilized as a catalyst for water oxidation under mild conditions.

Genome-wide response to selection and genetic basis of cold tolerance in rice (Oryza sativa L.).

Background: Cold stress is an important factor limiting rice yield in many areas of high latitude and altitude. Considerable efforts have been taken to genetically dissect cold tolerance (CT) in rice using DNA markers. Because of possible epistasis and gene × environment interactions associated with identified quantitative trait loci, the results of these genetic studies have unfortunately not been directly applicable to marker-assisted selection for improved rice CT.

[Survival analysis of 229 patients with advanced squamous cell carcinoma of the oral tongue].

Background & Objective: Patients with advanced squamous cell carcinoma (SCC) of the oral tongue have poor prognosis. This study was to analyze the most important factors affecting the prognosis of the patients with advanced (stage III and IV) SCC of the oral tongue.

Methods: Complete clinical and follow-up data of 229 patients with pathologically confirmed advanced SCC of the oral tongue, initially treated at Sun Yat-sen University Cancer Center were retrospectively analyzed.

Protective effect of geranylgeranylacetone on cisplatin ototoxicity.

Background: Geranylgeranylacetone (GGA) has the ability to induce heat shock proteins and to protect cells from apoptotic insults. This study aims to investigate whether GGA has a protective effect on cisplatin (CDDP) ototoxicity.

Methods: The auditory threshold was assessed using the auditory brainstem response test.

Genetic dissection and pyramiding of quantitative traits for panicle architecture by using chromosomal segment substitution lines in rice.

To understand the genetic basis of yield-related traits of rice, we developed 39 chromosome segment substitution lines (CSSLs) from a cross between an average-yielding japonica cultivar, Sasanishiki, as the recurrent parent and a high-yielding indica cultivar, Habataki, as the donor. Five morphological components of panicle architecture in the CSSLs were evaluated in 2 years, and 38 quantitative trait loci (QTLs) distributed on 11 chromosomes were detected. The additive effect of each QTL was relatively small, suggesting that none of the QTLs could explain much of the phenotypic difference in sink size between Sasanishiki and Habataki.