Chirality and Polarity Modulation in Semiconductive Zinc(II) Coordination Polymers Containing Thiolate-Based Ligands.

Recently, chiral semiconductors have attracted considerable attention owing to their potential applicability in optoelectronics and spintronics. In this study, homochiral and heterochiral semiconductive Zn(II) coordination polymers [Zn(tbbt)(()-mba)]·solvent (Htbbt = 4,4'-thiobisbenzenethiol, mba = methylbenzylamine, = , , ) were systematically synthesized. Single-crystal X-ray diffraction analyses revealed that and ( = Kwansei Gakuin framework), of type [Zn(tbbt)(()-mba)]·()-mba, obtained from enantiopure ()-mba and ()-mba isomers, exhibited chiral-nonpolar homochiral one-dimensional (1D) structures with mba lattice solvents, comprising left- and right-handed helical chains, respectively.

Cobalt phosphide-loaded biochar synthesis using phosphate-accumulating yeast and its application as an electrocatalyst.

A phosphorus (P)-accumulating mutant strain of is used as a precursor for transition metal phosphides (TMPs) biochar. Tetrahydrofuran treatment of the P-accumulating yeast coupled with pyrolysis resulted in the formation of CoP-loaded biochar (CoP@P-yeast) unlike previously reported CoP-loaded biochar using dry baker's yeast. The CoP@P-yeast exhibited the electrocatalytic activity for the hydrogen evolution with an overpotential of -192 mV at 10 mA cm.

Lead(II)-Based Coordination Polymer Exhibiting Reversible Color Switching and Selective CO Photoreduction Properties.

Herein, we report a new photofunctional Pb-S-based coordination polymer (CP) with the formula [Pb(ATAT)(OAc)] (ATAT = 3-amino-5-mercapto-1,2,4-triazole, OAc = acetate, ). Apart from its photoactive one-dimensional (1D) (-Pb-S-) chain, is also composed of another 1D (-Pb-O-) chain that originates from the coordination with acetate. The coordinated acetate can be exchanged with water (HO) or dimethyl sulfoxide (DMSO), leading to the formation of a or structure that exhibits a distinct change in optical properties, including a white-to-yellow color change.

Noninvasive, label-free image approaches to predict multimodal molecular markers in pluripotency assessment.

Manufacturing regenerative medicine requires continuous monitoring of pluripotent cell culture and quality assessment while eliminating cell destruction and contaminants. In this study, we employed a novel method to monitor the pluripotency of stem cells through image analysis, avoiding the traditionally used invasive procedures. This approach employs machine learning algorithms to analyze stem cell images to predict the expression of pluripotency markers, such as OCT4 and NANOG, without physically interacting with or harming cells.

Clinical importance of anti-Ro52 antibody in polymyositis and dermatomyositis.

Objectives: To clarify the clinical features of anti-Ro52 antibody (Ab)-positive polymyositis (PM)/dermatomyositis (DM).

Methods: We retrospectively examined the clinical features and status of anti-Ro52 Abs in patients with PM/DM admitted to the University of Tsukuba Hospital between January 2019 and February 2023. We compared the anti-Ro52 Ab-positive and anti-Ro52 Ab-negative groups.

Polymorphism of Two-Dimensional Semiconducting Coordination Polymers: Impact of a Lead-Sulfur Network on Photoconductivity.

Sulfur-coordinated coordination polymers (S-CPs) have unique optoelectrical properties that originate from infinite M-S bond networks. In this study, we synthesized and characterized two polymorphs of a two-dimensional (2D) Pb(II) S-CP with a formula of [Pb(tzdt)(OAc)] (Htzdt=1,3-thiazolidine-2-thione, OAc=acetate). Our findings revealed that the thermodynamic product (KGF-26) possesses quasi-2D (-Pb-S-) layers with weak nonbonded Pb-S bonds, whereas the kinetic product (KGF-27) has intrinsic 2D (-Pb-S-) layers with Pb-S bonds.

Functionalized Polyamine Synthesis with Photoredox Catalysis.

Polyamines, such as putrescine and spermidine, are pivotal in various biological processes across living organisms. Despite their significance, structurally modified polyamines offer a less-explored avenue for discovering bioactive compounds. The limitation is attributed to the synthetic difficulty of accessing functionalized polyamines.

Engineering of CdS-chain arrays assembled through S⋯S interactions in 1D semiconductive coordination polymers.

One-dimensional (1D) Cd(II) coordination polymers [Cd(-SPhOMe)] ( = , , and ; HSPhOMe = methoxybenzenethiol) containing inorganic 1D (-Cd-S-) chains were synthesized. Among these, the KGF-31 polymer bearing -SPhOMe featured a three-strand chain structure assembled interchain S⋯S interactions and exhibited high photoconductivity and longevity.

Quantitative analysis of phosphate accumulation in PHO regulatory system-mutant strains of Saccharomyces cerevisiae.

PHO-mutant strains of Saccharomyces cerevisiae, NOF-1 and NBD82-1, which constitutively express PHO81 and PHO4, respectively, have been reported to accumulate phosphate in high-phosphate conditions. However, detailed analysis, including a quantitative evaluation of the accumulated phosphate, has not been performed for these mutants. In this study, NOF-1 and NBD82-1 mutant and double mutant strains were cultured in a high-phosphate medium to quantitatively analyze the amount, accumulation form, and physiological use of the accumulated phosphate in the cells.

Coupling Dielectric Functionality with Magnetic Properties in Coordination Metal Complexes.

Significant research has been conducted on molecular ferroelectric materials, including pure organic and inorganic compounds; however, studies on ferroelectric materials based on coordination metal complexes are scarce. Ferroelectric materials based on coordination metal complexes have tunable structures and designs, with coexistence or synergy between the ferroelectric behavior and magnetic properties. Compared to inorganic compounds, few coordination metal complexes exhibit coupling between the magnetic and dielectric properties.

Ferroelectric coordination metal complexes based on structural and electron dynamics.

Ferroelectrics that display electrically invertible polarisation are attractive materials because of their potential for wide-ranging applications. To date, considerable effort has thus been devoted towards developing ferroelectric materials, particularly those comprising organic/inorganic compounds. In these systems, structural dynamics such as atomic displacement and reorientation of polar ions/molecules play a key role in the generation of reversible spontaneous polarisation.

Synthesis and Strong π-π Interaction of Hexaazatriphenylene Derivatives with Alternating Electron-Withdrawing and -Donating Groups.

Hexaazatriphenylene (HAT) derivatives have attracted wide attention because of their electron-deficient nature and unique self-assembly properties. In this work, a facile synthesis method for obtaining HAT derivatives with alternating electron-withdrawing nitrile and electron-donating alkoxy groups (HATCNOCn) is proposed. Crystal structure analysis indicated that HATCNOCn forms a one-dimensional columnar structure via strong π-π interactions.

A Ferroelectric Metallomesogen Exhibiting Field-Induced Slow Magnetic Relaxation.

Magnetoelectric (ME) materials exhibiting coupled electric and magnetic properties are of significant interest because of their potential use in memory storage devices, new sensors, or low-consumption devices. Herein, we report a new category of ME material that shows liquid crystal (LC), ferroelectric (FE), and field-induced single molecule magnet (SMM) behaviors. Co(II) complex incorporating alkyl chains of type [Co(3C -bzimpy) ](BF ) (1; 3C -bzimpy=2,2'-(4-hexadecyloxy-2,6-diyl)bis(1-hexadecyl-1H-benzo[d]imidazole)) displayed a chiral smectic C mesophase in the temperature range 321 K-458 K, in which distinct FE behavior was observed, with a remnant polarization (88.

Clinical Diagnosis of Central Vertigo in Patients With Dizziness in Emergency Practice.

Background: Life-threatening diseases should be promptly identified to provide appropriate medical care for emergency outpatients experiencing dizziness. However, dizziness is associated with various medical conditions; thus, a definitive diagnosis is challenging. To accurately diagnose vertigo in an emergency outpatient, we conducted a survey on the need to identify vertigo patients in the current outpatient departments.

Spin crossover phenomena in long chain alkylated complexes.

Soft materials represented by polymers, liquid crystals, and colloids are a class of materials that exhibit a variety of unique functionalities which derive from their non-rigid structures. In particular, soft metal complexes incorporating flexible long alkyl chains in their structures have been shown to display synergy between the structural dynamics of the long alkyl chain moieties and the electron dynamics occurring at the metal centre. This review presents a discussion of such soft metal complexes with a focus on spin crossover (SCO) behaviours that are associated with a structural phase transition, including a liquid crystal (LC) transition, arising from the flexible natures of the respective complexes.

Ferroelectric and Spin Crossover Behavior in a Cobalt(II) Compound Induced by Polar-Ligand-Substituent Motion.

Ferroelectric spin crossover (SCO) behavior is demonstrated to occur in the cobalt(II) complex, [Co(FPh-terpy) ](BPh ) ⋅3ac (1⋅3 ac; FPh-terpy=4'-((3-fluorophenyl)ethynyl)-2,2':6',2''-terpyridine) and is dependent on the degree of 180° flip-flop motion of the ligand's polar fluorophenyl ring. Single crystal X-ray structures at several temperatures confirmed the flip-flop motion of fluorobenzene ring and also gave evidence for the SCO behavior with the latter behavior also confirmed by magnetic susceptibility measurements. The molecular motion of the fluorobenzene ring was also revealed using solid-state F NMR spectroscopy.

Subcortical deafness as a subtype of auditory agnosia after injury of bilateral auditory radiations caused by two cerebrovascular accidents - normal auditory brainstem responses with I-VII waves and abolished consciousness of hearing.

Background: In central auditory disorders caused by damage of the cerebral hemispheres, there are cortical deafness and auditory agnosia. Although clinical cases of cortical deafness have been reported, little is known about the hearing problems and localized lesions associated with cortical deafness.

Aims/objectives: The aims of our research are to elucidate lesion sites associated with cortical deafness and to clarify why patients with cerebral lesions are not aware of any sound at all.

Magnetism in a helicate complexes arising with the tetradentate ligand.

The synthesis of [M(dimphen)(NCS)] (1; M = Fe), (2; M = Co), (3; M = Mn) and [Fe(dimphen)(NCSe)] (4), where dimphen = [1,2-bis(9-methyl-1,10-phenanthrolin-2-yl)ethane], are reported. The crystal packing structures of 1-3, show intermolecular π-π stacking and NCSSCN interactions. The complex 1 shows ferromagnetic interaction, and the complex 2 displays single-molecular magnet behaviour.

Water Molecule-Induced Reversible Magnetic Switching in a Bis-Terpyridine Cobalt(II) Complex Exhibiting Coexistence of Spin Crossover and Orbital Transition Behaviors.

The development of molecule-based switchable materials remains an important challenge in the field of molecular science. Achievement of a structural phase transition induced by adsorption/desorption of guest molecules in spin crossover (SCO) Co(II) compounds is of significant interest because of the possibility that the spin state of the magnetic anisotropic high-spin (HS, = 3/2) and low-spin (LS, = 1/2) states can be switched via the induced changes in associated intermolecular interactions. In this study, we demonstrated a reversible magnetic switching associated with spin state conversion, along with a single-crystal to single-crystal (SCSC) phase transition induced by dehydration/rehydration.

Ingredients of Jelly Products Affect Aspiration-Related Pulmonary Inflammation; in an Animal Study.

Diet modification is an important intervention in the management of patients with dysphagia. Food entering the airway, same as oral bacterium, causes pulmonary inflammation; therefore, the elucidation of inflammatory responses to different foods is important. This study aimed to investigate the differences in the severity of inflammatory response induced by intratrachial injection of foods with different nutritional components.

Solvent vapor-induced polarity and ferroelectricity switching.

Vapor-induced crystal to crystal transformation between non-polar [Fe(sap)(acac)(sol)] (Hsap = 2-salicylideneaminophenol, acac = acethylacetate, sol = MeOH, pyridine) and polar [Fe(sap)(acac)(DMSO)] was demonstrated. It provides an example of switchable ferroelectric behaviour attributted to the structural phase transition triggered by solvent vapour.

Cloning and mutagenetic modification of the firefly luciferase gene and its use for bioluminescence microscopy of expression during metamorphosis.

Bioluminescence microscopy is an area attracting considerable interest in the field of cell biology because it offers several advantages over fluorescence microscopy, including no requirement for excitation light and being phototoxicity free. This method requires brighter luciferase for imaging; however, suitable genetic resource material for this purpose is not available at present. To achieve brighter bioluminescence microscopy, we developed a new firefly luciferase.

Double-layered honeycomb architectures constructed via hierarchical self-assembly of hexagonal spin crossover cobalt(ii) metallacycles.

A hexagonal cobalt(ii) metallacycle and its "lipid packaged" derivatives, [Co(R-bisterpy)]X (R = H, OCH, OCH; X = BF, C-Glu), have been synthesized and characterized. The compounds incorporating BF anions formed sphere-like aggregates while the compounds with C-Glu lipid anions gave double-layered honeycomb architectures composed of hexagonal stacked tubular structures, which exhibit spin crossover behaviour.

Cell competition corrects noisy Wnt morphogen gradients to achieve robust patterning in the zebrafish embryo.

Morphogen signalling forms an activity gradient and instructs cell identities in a signalling strength-dependent manner to pattern developing tissues. However, developing tissues also undergo dynamic morphogenesis, which may produce cells with unfit morphogen signalling and consequent noisy morphogen gradients. Here we show that a cell competition-related system corrects such noisy morphogen gradients.