Field-Induced Slow Magnetic Relaxation in Pentacoordinate Co(II) Complexes: Tuning Magnetic Anisotropy Through Halide Substitution.

We report the synthesis, structural characterization, and magnetic properties of three pentacoordinate Co(II) complexes [CoX(dppb)]X (X = Cl (), Br (), and I ()) supported by the bidentate phosphine ligand 1,2-bis(diphenylphosphino)benzene (dppb). Single-crystal X-ray diffraction reveals that all three complexes adopt similar vacant octahedron () geometries with the halide ligand in one axial position. Magnetic studies demonstrate that these complexes exhibit field-induced slow magnetic relaxation behaviors, with positive values of 25.

AIE single molecule fluorescent switches for detection of heavy metal ions.

The use of fluorescent probes for heavy metal ions is an efficient, low-cost, on-site operable detection method, and has been widely applied in both environmental and biomedical monitoring. Herein, we present a single-molecule AIE fluorescent sensor for the detection of heavy metal ions based on the fold/unfold conformational transition of AIE molecular modules in a single molecule triggered by the coordination of heavy metal ions. The fluorescent probe is able to detect a range of heavy metal ions at concentrations well below the "Hygienic Standard for Drinking Water", and is expected to be used as a fluorescent probe with a new detection mechanism for heavy metal ions for environmental detection or bio-monitoring applications.

Six-coordinate lanthanide complexes based on bidentate phosphine oxide ligands: synthesis, structure and magnetic properties.

Three six-coordinate mononuclear lanthanide complexes of the formula [Ln{(O = PPh)CH}Cl]Cl·THF based on the Kramers ions Dy (1), Er (2) and Yb (3) have been synthesized and structurally characterized. Single-crystal X-ray diffraction reveals that these complexes adopt an octahedral geometry with -arranged chloride ligands and four oxygen atoms from two bidentate phosphine oxide ligands. The octahedral coordination sphere generates a crystal field environment conducive to field-induced slow magnetic relaxation for lanthanide ions with both oblate (Dy) and prolate (Er, Yb) electron density distributions.

Prevalence of falls and associations with family functioning among community-dwelling older adults in Guangzhou, China.

Introduction: Falls are the primary cause of unintentional fatalities among individuals aged 65 and older. Enhancing research on fall prevention among older adults is an urgent priority. Consequently, this study aims to investigate the prevalence and influencing factors of falls among community-dwelling older adults in Guangzhou, China, with a particular emphasis on the impact of family functioning.

1D Lead Bromide Hybrids Directed by Complex Cations: Syntheses, Structures, Optical and Photocatalytic Properties.

This study presents the synthesis, structural characterization, and evaluation of the photocatalytic performance of two novel one-dimensional (1D) lead(II) bromide hybrids, [Co(2,2'-bpy)][PbBrCHOH] () and [Fe(2,2'-bpy)][PbBr] (), synthesized via solvothermal reactions. These compounds incorporate transition metal complex cations as structural directors, contributing to the unique photophysical and photocatalytic properties of the resulting materials. Single-crystal X-ray diffraction analysis reveals that both compounds crystallize in monoclinic space groups with distinct 1D lead bromide chain configurations influenced by the nature of the complex cations.

Association between abdominal obesity indices and falls among older community-dwellers in Guangzhou, China: a prospective cohort study.

Background: Central obesity was considered as a risk factor for falls among the older population. Waist circumference (WC), lipid accumulation product (LAP), visceral adiposity index (VAI), and the Chinese visceral adiposity index (CVAI) are considered as surrogate markers for abdominal fat deposition in increasing studies. Nevertheless, the longitudinal relationship between these indices and falls among the older population remains indistinct.

Associations between type 2 diabetes mellitus and risk of falls among community-dwelling elderly people in Guangzhou, China: a prospective cohort study.

Background: Several studies have demonstrated that older adults with type 2 diabetes mellitus (T2DM) have a higher risk of falls compared to those without T2DM, which may lead to disability and a lower quality of life. While, limited prospective studies have quantified the associations in southern China. We conducted a longitudinal cohort study to quantify the associations between T2DM and falls and investigate the risk factors of falls among community-dwelling elderly people in Guangzhou, China.

The Association of Malnutrition and Health-Related Factors among 474,467 Older Community-Dwellers: A Population-Based Data Mining Study in Guangzhou, China.

Background: This study aimed to examine the prevalence and associated factors of malnutrition in older community-dwellers and explore the interaction between associated factors.

Methods: A total of 474,467 older community-dwellers aged 65 or above were selected in Guangzhou, China. We used a two-step methodology to detect the associated factors of malnutrition and constructed logistic regression models to explore the influencing factors and interactive effects on three patterns of malnutrition.

The Association between Working Hours with Vigilance and Executive Function of Intensive Care Unit Nurses.

Background: Vigilance and executive functions are integral to nursing practice. Prolonged working hours are associated with heightened fatigue and increased nursing errors. However, the impact of work duration on the vigilance and executive function of ICU nurses remains unexplored.

A Layered Aluminophosphate [CHN][Al(PO)]·5HO with Fluorescent Property Derived from Carbazolyl-Modified Template.

Designing and innovating organic structure-directing agents is the key to synthesizing novel molecular sieve structures. Herein, we design a novel carbazolyl-modified template and further synthesize a two-dimensional layered aluminophosphate with [CHN][Al(PO)]·5HO (denoted as ZHKU-2). ZHKU-2 is composed of AA-stacked [AlPO16] layers constructed from alternating AlO and PO(=O) tetrahedrons to form a 4.

Suspended particulate matter-associated environmental corticosteroids in the Pearl River, China: Occurrence, distribution, and partitioning.

Suspended particulate matter (SPM) plays an important role in the geochemical behavior and fate of organic micropollutants in aquatic environments. However, the presence of trace emerging endocrine disruptors such as environmental corticosteroids (ECs) in SPM is less well understood. This study focused on the occurrence, distribution, and partitioning of SPM-associated ECs in the Pearl River system, China.

Slow magnetic relaxation of mononuclear complexes based on uncommon Kramers lanthanide ions Ce, Sm and Yb.

Based on the uncommon Kramers ions Ce, Sm and Yb, complexes [Ce(dppbO)Cl] (1, dppbO = 1,2-bis(diphenylphosphino)benzene dioxide), [Sm(dppbO)Cl] (2) and [Yb(dppbO)Cl]Cl (3) toward single-ion magnets were obtained and fully characterized. Complexes 1 and 2 are isostructural seven-coordinate with distorted geometries between a capped trigonal prism and a capped octahedron, while 3 is six-coordinate with an octahedral geometry. Dynamic magnetic property measurements reveal their field induced slow magnetic relaxation behaviours.

Substituent Dependence on Series of Cationic Gyroidal MOFs in utc-c Topology with High CO Affinity and Ultrahigh Anionic Dye Adsorption Capacity.

A substituent decorating strategy for modification of the functional cavity is of great importance in the design of metal-organic frameworks (MOFs). Herein, three new isostructural cationic MOFs, [Cu(Xpip)]·NO·nHO (Xpip stands for X-substituted phenylimidazophenanthroline, where X = adm (SCNU-2), f (SCNU-3), and none for SCNU-4), have been successfully synthesized and shown gyroidal topology and large pore sizes which can be adjusted by different substituents (-N(CH), -F, and -H). Interestingly, the differences of the substituents (sizes and proton donor/acceptor) show essential effects on the adsorption abilities of carbon dioxide and dyes, where SCNU-4 exhibits the highest CO affinity and the biggest adsorption capacity for anionic dyes Fluorescein Sodium, and SCNU-3 adsorbs the largest amount (1503.

Stereoisomeric coordination polymers based on facial and meridional six-coordinate dysprosium(III ).

Due to the small differences in the chemical properties of () and () stereoisomers, selective synthesis of one of the isomers is challenging, especially for lanthanide complexes. By using a flexible bidentate phosphine oxide ligand, we managed to isolate three stereoisomeric 2D and 3D coordination polymers, in which six-coordinate Dy(III) ions possess - or -ClO coordination environments. Structural studies indicate that the stereochemistry differences result from their various supramolecular interactions (, hydrogen bonding and π⋯π stacking).

A Mononuclear Iron(II) Spin-Crossover Molecule Decorated by Photochromic Azobenzene Group.

Aiming at constructing photoresponsive spin crossover (SCO) behavior, herein we designed a new ligand Abtz (Abtz = ()--(4-(()-phenyldiazenyl)phenyl)-1-(thiazol-4-yl)methanimine) which was decorated by a photochromic azobenzene group. Based on this photochromic ligand, a mononuclear Fe(II) SCO molecule [Fe(Abtz)](BF)·(EAC) (, EAC = ethyl acetate) was successfully synthesized and showed a complete one-step SCO behavior. Under continuous UV light and blue-light exposure, the photoisomerization of both ligand Abtz and compound in the liquid phase was confirmed through UV-Vis spectra.

Targeted Next-Generation Sequencing of Circulating Tumor DNA Mutations among Metastatic Breast Cancer Patients.

Liquid biopsy through the detection of circulating tumor DNA (ctDNA) has potential advantages in cancer monitoring and prediction. However, most previous studies in this area were performed with a few hotspot genes, single time point detection, or insufficient sequencing depth. In this study, we performed targeted next-generation sequencing (NGS) with a customized panel in metastatic breast cancer (MBC) patients.

Prevalence and related factors of depression and falls among the elderly living in rural communities of Guangzhou.

Few studies have concentrated on the prevalence and related factors of depression and falls among the elderly living in rural communities of Guangzhou. A total of 335 participants aged ≥60 years were recruited by simple random sampling method. A structural equation model was applied to determine interrelationships between depression, falls and other variables.

Crystal and Band-Gap Engineering of One-Dimensional Antimony/Bismuth-Based Organic-Inorganic Hybrids.

Hybrid halide perovskites are emerging semiconducting materials with a diverse set of remarkable optoelectronic properties. Besides the widely studied lead halide perovskites, Pb-free metal halides such as Bi- and Sb-containing hybrid organic-inorganic materials have shown potential as semiconductors and have been deemed candidates for optoelectronic devices. Here, we report a series of 1D Sb/Bi-based organic-inorganic hybrid alloys: [4ApyH]SbBiIBr, where 4ApyH stands for the 4-aminopyridine cations.

Chiral Erbium(III) Complexes: Single-Molecule Magnet Behavior, Chirality, and Nuclearity Control.

The reactions of chiral ligand ()/()-1,1'-binaphthyl-2,2'-diyl phosphate (-HL/-HL) and ErCl·6HO afford two pairs of di- and tetranuclear enantiomers [Er(/-L)(EtOH)]Cl·6.5EtOH (-, -) and [Er(PO)(/-L)(EtOH)(HO)]Cl(OH)·15EtOH·11HO (-, -). The nuclearity of these complexes is controllable and depends on the reaction temperature with a template effect.