Materials
·
2024
·Vol. 17
·期 15
·3779
·
IF 3.1
Jiaji Zhang,Zhihua Xiong,Zi Wang,Jinlong Sun
Bismuth-based compounds have been regarded as a kind of promising material due to their narrow bandgap, high carrier mobility, low toxicity, and strong oxidation ability, showing potential applications in the field of photoelectrochemical (PEC) activities. They can be applied in sustainable energy production, seawater desalination and treatment, optical detection and communication, and other fields. As a member of the broader family of bismuth-based materials, β-Bi2O3exhibits significant advantages for applications in engineering, including high photoelectric response, stability in harsh environments, and excellent corrosion resistance. This paper presents the synthesis of β-Bi2O3thin films utilizing the mist chemical vapor deposition (CVD) method at the optimal temperature of 400 °C. Based on the β-Bi2O3thin film synthesized at optimal temperature, a PEC-type photodetector was constructed with the highest responsivity R of 2.84 mA/W and detectivity D of 6.01 × 1010Jones, respectively. The photodetection performance was investigated from various points like illumination light wavelength, power density, and long-term stability. This study would broaden the horizontal and practical applications of β-Bi2O3.
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Bioactive Carbohydrates and Dietary Fibre
·
2024
·
IF 0
Meng Liu,Xuan Liu,Xiyu Jiang,Jiaxin Chen,Jinfeng Bi
Oil-in-water (O/W) emulsions have emerged as a viable method for encapsulating β-carotene. To achieve stable emulsion systems, the development of latent emulsifiers is essential. This study collected three peach cultivars (Mixture cultivar (MC), Zhonghpan 11# (ZP11), and Yingqing (YQG)) to extract peach gum polysaccharides (PGP) for the encapsulation of β-carotene without the need for additional emulsifiers. The research aimed to investigate the emulsions' physicochemical stability (including particle size, zeta potential, turbidity, color, and retention rate of β-carotene (RR)) during storage. The findings revealed that the ZP11 emulsion exhibited the highest emulsion efficiency (EE) at 89.08% and displayed a more vibrant color. After 35 days of storage, YQG emulsion exhibited better emulsion stability with the highest zeta-potential (>35 mV, negative), RR of β-carotene (43.44%), and longest half-life period ( t 1/2 , 32.31d) among three cultivars. Correlation analysis showed that molecular weight (Mw), polydispersity coefficient (Mw/Mn), and arabinose (Ara) of PGP would have an influence on its emulsifying capacity and stability of β-carotene emulsion. The information was significant for PGP of great potential as an emulsifier and stabilizer to provide possibility regarding designing a proper delivery system.
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POLYMER JOURNAL
·
2021
·Vol. 53
·期 8
·943-949
·
IF 3.08
Zhu Hongyu,Gu Dongxu,Rao Zikun,Li Yang,Liu Yu,Hao Jianyuan
Creating stimulus-responsive materials solely by controlling polypeptide secondary nanostructures is challenging. We synthesized a methyl poly(ethylene glycol)- b -poly(O-benzyl-L-threonine) (mPEG-PBnLT) diblock copolymer that exhibited gel-to-sol UCST (Upper Critical Solution Temperature) transition behavior in an aqueous solution. The transition temperature window was easily adjusted by changing the copolymer concentration or length of the PBnLT block. Disassembly of the initial β-sheet nanoassemblies caused nanofibril transformation to spherical aggregates with increasing temperature, resulting in a gel-to-sol UCST transition. This result inspires a brand-new strategy for the structural design and functional control of materials.
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MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Wenxiang Xiao,Zhenzhen Yang,Jing Liu,ZhenCheng Chen,Hua Li
As one of the most important biomarkers for cardiovascular disease and high blood pressure, cholesterol quantification is of great importance for clinical diagnosis and health management. In this study, mercapto-β-cyclodextrin capped gold nanoclusters have been used as fluorescent probes for succinct and sensitive determination of cholesterol. Using mercapto-β-cyclodextrin as a reducing and capping agent, gold nanoclusters with bluish-green fluorescence were synthesized by the one-pot hydrothermal method. The cyclodextrin cavities of the capping layer on gold nanoclusters act as selective units for cholesterol recognition, and the gold cores serve as signal reporting units. The host–guest interaction between cholesterol and cyclodextrin directly enhances the fluorescence of gold nanoclusters without the involvement of additional dyes or quenchers. Under the optimal conditions, the probe responds linearly to cholesterol in the concentration range of 10.0 ∼ 100.0 μmol·L -1 with the detection limit of 5.77 ± 0.18 μmol·L -1 (3σ, n = 3). Common coexisting components in the serum did not interfere with the detection of cholesterol. Satisfactory results were obtained for the determination of cholesterol in real serum samples by the proposed method.
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JOURNAL OF ORGANIC CHEMISTRY
·
2022
·
IF 4.198
Jiateng Wang,Yunqing Zhuang,Bingxue Yu,Xiaofeng Wang,Gehua Bi,Xin Huang,Weimin Zhang
A general and efficient method for the synthesis of 4-sulfenylated oxazoles is described. Trisubstituted oxazoles are obtained in good to excellent yields from β-keto sulfoxides and nitriles. The mechanistic study suggests that the reaction proceeds via the nucleophilic addition of nitriles to the in situ formed α-carbonyl cation followed by intramolecular cyclization.
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APPLIED SPECTROSCOPY
·
2025
·
IF 2.2
XingYi Guo,Chun Zhu,Guoqing Chen,Lei Li,Chaoqun Ma,Taiqun Yang,Anqi Hu,WenHui Yang,YaLi Qian
In this paper, a lanthanide complex-based fluorescent sensor Tb(4-MBA) was developed for the selective recognition of diabetic ketoacidosis (DKA) and the diabetes biomarker β-hydroxybutyric (β-Hb). β-Hb significantly enhanced the fluorescence emission of the Tb(4-MBA) complex at 539 nm. Based on the analysis of the surface electrostatic potential distribution and time-resolved spectra, we speculate that in the reaction system of β-Hb with Tb(4-MBA), β-Hb and Tb(4-MBA) may form a complex through hydrogen bonding interactions, which brings β-Hb closer to Tb3+ and thus reduces the non-radiative energy loss of the solvent molecules to Tb3+ and significantly enhances the Tb(4-MBA) fluorescence intensity. The linear range of Tb(4-MBA) for β-Hb was 2–55 μM, and the limit of detection (LOD) was 50.6 nM. This sensor has high sensitivity and selectivity and shows great potential in the field of screening and diagnosis of diabetes mellitus and DKA.
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Analytical Methods
·
2018
·Vol. 10
·期 45
·5372-5379
·
IF 2.073
Odoom Jibrael Kingsford,Junjuan Qian,Depeng Zhang,Yinhui Yi,Gangbing Zhu
The occurrence of 1-chloro-4-nitrobenzene (CNB) in the environment due to increased agricultural and economic activities worldwide has been a serious concern for various environmental agencies; hence the qualitative and quantitative determination of CNB is of great significance. In this study, we took into consideration the features of carbon nanohorns (CNHs), such as high surface area and electron transfer ability, and β-cyclodextrin (β-CD), such as high host–guest recognition ability with a hydrophilic outer layer, to design a highly sensitive electrochemical sensor for detecting CNB by preparing CNHs and β-CD nanohybrids through a simple ultrasonication process. The outcome of our study revealed that the CNHs/β-CD nanohybrid modified electrode is an excellent electrochemical sensor for CNB. Under the optimized conditions, the experimental results show a considerable linear response range, unsubstantial interference from familiar organic and inorganic compounds and a detection limit of 9.0 nM.
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Materials
·
2025
·Vol. 18
·期 10
·2232
·
IF 3.2
Binbin Fu,Chaoran Wang,Dan Wang
This study investigates the impact of different temperatures and initial Mg2+/Ca2+molar ratios in the solution on the wet-accelerated carbonation of β-dicalcium silicate (β-C2S). The x-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), thermogravimetric analyzer (TGA), and field emission scanning electron microscopy (FE-SEM) analysis results indicated that temperature and the Mg2+/Ca2+molar ratio are key factors in the nucleation of aragonite. Aragonite formed at a temperature above 60 °C, and the high temperature promoted the crystallinity of needle-like aragonite with a length of 1–6 μm and a diameter of ~1 μm. Moreover, 80 °C was the most favorable temperature for the formation of aragonite with a large aspect ratio in the carbonation system of β-C2S. Mg2+had a significant effect on inhibiting the transformation of aragonite to calcite and promoting the stability of aragonite. Aragonite became the dominant CaCO3polymorph instead of calcite when the Mg2+/Ca2+molar ratio was above 1.0, and pure aragonite-style calcium carbonate was formed at a Mg2+/Ca2+molar ratio of 1.5.
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International Journal of Electrochemical Science
·
2025
·
IF 2.4
Yuanhang Cao,Chonggao Liang,Jiale Han,Aodi Luo,Hongyuan Zhao,Runqiang Liu
An ultrasound-assisted synthesis method was employed to prepare β-cyclodextrin (β-CD) and acetylene black (AB) nanocomposites, referred to as β-CD@AB. These nanocomposites were subsequently modified onto glassy carbon electrodes (GCE) to develop electrochemical sensors for the detection of niclosamide (NA). The bead chain-like carbon network structure of AB exhibits outstanding electrical conductivity, significantly improving electrocatalytic performance. Additionally, β-CD not only enhances the dispersibility of AB but also provides superior adsorption and molecular recognition capabilities, thereby increasing the capacity of AB to capture and enrich NA molecules. The integration of β-CD and AB enabled highly sensitive NA detection, achieving a detection limit of 0.019 μM within the concentration range of 0.09~15 μM. The β-CD@AB/GCE-based analytical platform exhibited remarkable precision and accuracy in NA quantification in complex matrices, with relative normal deviations ranging from 1.26% to 4.31% and quantitative recovery rates between 96.87% and 101.02%. This electrochemical detection system demonstrated excellent operational stability when applied to actual environmental samples. The findings indicate that the sensor, developed through the modification of GCE with β-CD@AB, provides reliable performance for NA detection.
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Green Synthesis and Catalysis
·
2025
·
IF 6.3
Mengqian Song,Yu Li,Jinhui Feng,Shuhong Mao,Peiyuan Yao,Qiaqing Wu,Dunming Zhu
Chiral β-amino alcohols represent a significant structural motif in many biologically active molecules. Developing an efficient biocatalytic method for synthesizing chiral β-amino alcohols with structural diversity is highly desirable. In this study, enzymatic hydroxymethylation of aryl-aliphatic aldehydes by benzaldehyde lyases (BALs) enabled the synthesis of α-hydroxymethyl ketones at high substrate loadings (200 mmol/L - 300 mmol/L). And the reductive amination of diverse α-hydroxymethyl ketones by amine dehydrogenases (AmDHs) was conducted for synthesizing chiral β-amino alcohols in high isolated yields (60 %-79 %). Furthermore, a one-pot, two-step enzymatic process involving BAL-catalyzed hydroxymethylation of aldehydes and subsequent AmDH-catalyzed reductive amination was developed, enabling the synthesis of aromatic, aliphatic and aryl-aliphatic ( S )-β-amino alcohols from corresponding aldehydes in good to excellent isolated yields (56 %-96 %) and excellent enantioselectivity (>99 % ee ). The practical utility of this methodology was further demonstrated through the synthesis of key intermediates for antiviral drug Telaprevir or ATP competitive ERK inhibitor BVD-523.
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ACS Catalysis
·
2025
·
IF 13.1
Yong Tang,Yaning Xu,Xuan Zhang,Chunyu Wang,Danning Zhao,Fengxi Li,Lei Wang
In this study, the asymmetric decarboxylative Mannich reaction (DMR) provides an attractive method for assembling C–N bonds to synthesize high-value-added nitrogenous scaffolds. Here, we report an enzyme-controlled method for the asymmetric DMR of cyclic sulfonamides with β-ketone esters. The method utilizes two types of enzymes, namely, copper artificial metalloenzyme (Cu-ArM) and commercial lipase (Novozym 435), to control the bidirectional enantioselectivity in DMR. The Cu-ArM is produced by anchoring a biotinylated Cu-complex (4-OHPIP-biotin*CuI) within wild-type streptavidin (WT-Sav). The resulting Cu-ArM catalyzes the asymmetric DMR to obtain a series of R-configurated β-sulfonamide ketones with good yield and enantioselectivity. By contrast, the S-configurated β-sulfonamide ketones are obtained with satisfying stereoselectivity and yield when Novozym 435 is used as the catalyst. Molecular dynamics (MD) simulations of both enzymes, along with preliminary stereochemical model analysis, elucidate the key site contact leading to good catalytic performance. Furthermore, MD simulations offer a plausible explanation for the superior reactivity of cyclic imines compared to noncyclic imines.
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JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 3
·e70154
·
IF 3.4
Jianhua Yuan,Ying Wu,Yucong Shi,Lei Zhou,Yanjun Zhang,Chengmei Liu,Junzhen Zhong
In this study, a series of characterizations and analyses of fibrous β-lactoglobulin self-assembly (FBS) and worm-like β-lactoglobulin self-assembly (WBS) were carried out to investigate the key factors for the formation of self-assemblies of β-lactoglobulin under two different induced conditions. Compared with natural β-lactoglobulin, FBS was always positively charged, increasing to 9.69 mV when heated for 10 h, whereas WBS was always negatively charged, decreasing to −20.73 mV when heated for 20 min. Electrostatic interactions play a crucial role in the formation of both FBS and WBS. The free sulfhydryl content decreased by 10.4% at 20 min of heating compared with that at 1 min of heating. β-Lactoglobulin converted the exposed free sulfhydryl groups to disulfide bonds when heated under neutral conditions, and disulfide bonds played a key role in the formation of WBS. The surface hydrophobicity of FBS reached its maximum at 1 h of heating, while that of WBS reached its maximum at 15 min of heating. The hydrophobic interactions played an extremely important role in the formation of the two self-assemblies. The investigation of the formation mechanism of FBS and WBS is of great significance for the preparation of β-lactoglobulin self-assembled gels. Practical Application Probing the formation mechanism of β-lactoglobulin self-assemblies provides new methods and ideas for the preparation of β-lactoglobulin gels, which is important for improving the structure and properties of gel carriers prepared from bio-based materials.
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