Several kinds of UiO-66-NH with different aggregation morphologies were prepared to verify that the morphology of the photocatalyst could influence charge transfer. That showing poor aggregation exhibits superior CO photoreduction performance, attributed to the small particle size related to the poor aggregation and to the resulting high efficiency of separation of photogenerated electrons and holes.
View Article and Find Full Text PDFA simple and effective strategy to obtain solid-state multicolor emitting materials is a particularly attractive topic. Nonconventional/nonconjugated polymers are receiving widespread attention because of their advantages of rich structural diversity, low cost, and good processability. However, it is difficult to control the molecular conformation or to obtain the crystal structure of amorphous molecules, which means it is a challenge to obtain nontraditional polymeric materials with multicolor emission.
View Article and Find Full Text PDFPlant Physiol Biochem
September 2024
The LATERAL ORGAN BOUNDARIES DOMAIN (LBD) protein, named for its LATERAL ORGAN BOUNDARIES (LOB) domain, is a member of a class of specific transcription factors commonly found in plants and is absent from all other groups of organisms. LBD TFs have been systematically identified in about 35 plant species and are involved in regulating various aspects of plant growth and development. However, research on the signaling network and regulatory functions of LBD TFs is insufficient, and only a few members have been studied.
View Article and Find Full Text PDFThe development of single-component materials with low cytotoxicity and multichannel fluorescence imaging capability is a research hotspot. In the present work, highly electron-deficient pyrazine monomers were covalently connected into a polyurethane backbone using addition polymerization with terminal poly(ethylene glycol) monomethyl ether units containing a high density of electron pairs. Thereby, an amphiphilic polyurethane-pyrazine () derivative has been synthesized.
View Article and Find Full Text PDFNeonatal hypoxic-ischemic brain damage (HIBD) is a leading cause of infant mortality worldwide. This study explored whether quercetin (Que) exerts neuroprotective effects in a rat model of HIBD. A total of 36 seven-day-old Sprague-Dawley rats were divided into control, Que, HI, and HI + Que groups.
View Article and Find Full Text PDFThe study of aggregate formation and its controllable effect on luminescence behavior has a far-reaching influence in establishing a universal aggregation photophysical mechanism. In this paper, we obtained clusters with different extents of aggregation by heat-induced or light-triggered aggregation of a new polyurethane derivative (). The controllable regulation of multicolor fluorescence of a single (nondoped) polymeric material is realized.
View Article and Find Full Text PDFIn this study, a new cobalt-based metal-organic framework (), [Co(OH)(PBA)(AIP)]·3DMA·0.75HO (4-(pyridin-4-yl) benzoic acid (HPBA), 5-aminoisophthalic acid (HAIP) and ,-dimethylacetamide (DMA)), was fabricated using a solvothermal method. has 3D network architecture with 1D nanopore channels.
View Article and Find Full Text PDFBuilding metal-organic frameworks (MOFs) covalently modified by onium halides is a promising approach to develop efficient MOF-based heterogeneous catalysts for the cycloaddition of CO to epoxides (CCE) into cyclic carbonates. Herein, we report a novel zirconium-based MOF covalently modified by methyl pyridinium bromide, ZrO(OH)(MPTDC)(N-CH-MPTDC)Br ((Br-)CH3-Pyridinium-MOF-1), where MPTDC denotes 3-methyl-4-pyridin-4-yl-thieno[2,3-] thiophene-2,5-dicarboxylate. The structure and composition of this complex were fully characterized with PXRD, NMR, XPS, TEM and so on.
View Article and Find Full Text PDFA series of target compounds 1,3-benzodioxole-based fibrate derivatives were designed and synthesized. All the target compounds were preliminarily evaluated by hyperlipidemia mice induced by Triton WR-1339, in which compound 12 displayed a greater anti-hyperlipidemia activity than other compounds as well as positive drug fenofibrate (FF). 12 showed a significant reduction of plasma lipids, such as triglycerides (TG), total cholesterol (TC) and low-density lipoprotein cholesterin (LDL-C), in high fat diet (HFD) induced hyperlipidemic mice.
View Article and Find Full Text PDFObjective The purpose of this study was to produce an arginylglycylaspartic acid (RGD) peptide-modified ultra-small superparamagnetic iron oxide (FeO) nanoparticles (NPs) for targeted magnetic resonance (MR) imaging of hepatocellular carcinoma (HCC) cells and verify its utility as a T1 positive MRI imaging contrast agent and .Methods The carboxylated FeO NPs stabilized with sodium citrate were conjugated with polyethylene glycol (PEG)-linked RGD nanoparticles to form a novel target contrast agent FeO-PEG-RGD NPs. The specificity of FeO-PEG-RGD to bind RGD receptor was investigated by HepG2 cellular uptake and cell MR imaging, and by MR imaging of subcutaneous HepG2 tumors of nude mice.
View Article and Find Full Text PDFYing Yong Sheng Tai Xue Bao
March 2020
To explore the effects of future climate change on food production in Henan Province, the climate potential productivity and its change characteristics in Henan Province were calculated by agro-ecological zone (AEZ) model. This study was based on the production potential and climate resource carrying capacity of summer maize and winter wheat, combined with the observation data of 111 meteorological stations in Henan Province from 1961 to 2017 and the meteorological data under two emission scenarios of RCP4.5 and RCP8.
View Article and Find Full Text PDFMitochondrial DNA B Resour
October 2019
We first reported the mitochondrial genome of . The mitogenome of contains 17,011 base pairs. The overall base composition of complete mitogenome is 28.
View Article and Find Full Text PDFAgarwood is derived from wounds in Aquilaria trees and is widely used in traditional medicine, incense, and perfume. Sesquiterpenes are one of the main active components in agarwood and are known to be induced by wounding or injury; However, the molecular mechanisms by which wounding leads to sesquiterpene formation remain largely unknown. Agarwood sesquiterpene synthase 1 (ASS1) is one of key enzymes responsible for the biosynthesis of sesquiterpenes and is a crucial jasmonate (JA)-responsive wound-inducible synthase.
View Article and Find Full Text PDFIn this work, a multifunctional microporous metal-organic framework (MOF), [Cd(ABTC)(HO)(DMA)]·4DMA (JLNU-4; JLNU = Jilin Normal University; HABTC = 3,3',5,5'-azobenzenetetracarboxylic acid), has been synthesized based on the ligand HABTC under solvothermal conditions. JLNU-4 shows excellent uptake of iodine both in solution and in the vapor phase, owing to the existence of a microporous structure in JLNU-4. The adsorption kinetics during the process of iodine adsorption were analyzed a series of qualitative and quantitative analyses, such as the Langmuir and Freündlich adsorption isotherms.
View Article and Find Full Text PDFHypolipidemic effects of the newly synthesized 5-(4-hydroxyphenyl)-3H-1,2-dithiole-3-thione-based fibrates were evaluated in Triton WR-1339 and high-fat diet (HFD)-induced hyperlipidemic mice. Preliminary screening of all the synthesized compounds was done by using an acute model (Triton WR-1339 model), in which compound 6 shown more significant antidyslipidemic activity than fenofibrate (FF). The compound 6 was also found to reduce serum triglyceride (TG), total cholesterol (TC) and low density lipoprotein cholesterin (LDL) in HFD-induced hyperlipidemic mice.
View Article and Find Full Text PDFOxidative stress has been regarded as the leading mechanism of the hepatotoxicity of clofibrate (CF). To achieve multifunctional novel hypolipidemic agents with hypolipidemia, antioxidant, and ameliorating liver injury, clofibric acid derivative hydroxytyrosol-clofibrate (CF-HT) was synthesized by molecular hybridization. CF-HT exhibited significant hypolipidemia, reducing serum triglyceride (TG), total cholesterol (TC), and malonaldehyde (MDA) by 30%, 33%, and 29% in hyperlipidemic mice induced by Triton WR 1339.
View Article and Find Full Text PDFBiomed Pharmacother
March 2018
Hydroxytyrosol (HT) is a natural polyphenol antioxidant that exists in olive oil. In the study of multifunctional hypolipidemic of nicotinic derivatives, we found that hydroxytyrosol nicotinate (HT-N) incorporation of niacin with HT displayed ?-glucosidase inhibitory activities in vitro, such as yeast ?-glucosidase (IC?=?117.72??M) and rat intestinal ?-glucosidases maltase (IC?=?31.
View Article and Find Full Text PDFSesquiterpenes are one of the most important defensive secondary metabolite components of agarwood. Agarwood, which is a product of the Aquilaria sinensis response to external damage, is a fragrant and resinous wood that is widely used in traditional medicines, incense and perfume. We previously reported that jasmonic acid (JA) plays an important role in promoting agarwood sesquiterpene biosynthesis and induces expression of the sesquiterpene synthase ASS1, which is a key enzyme that is responsible for the biosynthesis of agarwood sesquiterpenes in A.
View Article and Find Full Text PDFA series of phenylene-based conjugated microporous polymers (CMPs) of the A + M (x = 2, 3, 4, 6) type were synthesized. By tuning the monomer length and geometry, the BET surface area of CMPs can be tuned from 571 to 1115 m g. Amongst the synthesized CMPs, ACMP-1 exhibits the highest CO adsorption capacity of 1218 mg g at 318 K and 60 bar pressure.
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