Article
Chemistry, Inorganic & Nuclear
Marc Martinez de Sarasa Buchaca, Felipe de la Cruz-Martinez, Luis F. F. Sanchez-Barba, Juan Tejeda, Ana M. M. Rodriguez, Jose A. Castro-Osma, Agustin Lara-Sanchez
Summary: Ring-opening copolymerization reactions of epoxides, carbon dioxide and cyclic esters using bimetallic chloride indium complexes as catalysts were conducted under mild reaction conditions. The catalysts exhibited high catalytic activity and selectivity in the absence of a co-catalyst, leading to the formation of poly(cyclohexene carbonate) (PCHC). Furthermore, polyester-polycarbonate copolymers poly(lactide-co-cyclohexene carbonate) (PLA-co-PCHC) were synthesized via a one-pot one-step route without the use of a co-catalyst. The copolymers showed different thermal properties by adjusting the CO2 pressure and monomer feed.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yongmoon Yang, Jong Doo Lee, Yeong Hyun Seo, Ju-Hyung Chae, Sohee Bang, Yeon-Joo Cheong, Bun Yeoul Lee, In-Hwan Lee, Seung Uk Son, Hye-Young Jang
Summary: This study presents a new approach to enhance the catalytic activity in CO2 polymerization by using two-dimensional (2D) ZnGA. A porous granular Co-modified ZnGA (Co-ZnGA) was prepared by treating morphology-controlled 2D ZnGA with H3Co(CN)(6). Co-ZnGA exhibited significant catalytic activity in copolymerization of various epoxides and CO2.
DALTON TRANSACTIONS
(2022)
Article
Polymer Science
Wenjie Mo, Chunwei Zhuo, Shunjie Liu, Xianhong Wang, Fosong Wang
Summary: This study presents a facile strategy to transform brittle plastic PCHC into an elastomer by introducing Cu-S dynamic reversible bonds and performing CO2/CHO/vinyl cyclohexene oxide terpolymerization, followed by thiol-ene click chemistry and Cu-S coordination postfunctionalization. The resulting thermoplastic elastomers exhibit good elastic recovery and adjustable mechanical properties.
Article
Chemistry, Inorganic & Nuclear
Nattiya Laiwattanapaisarn, Arnut Virachotikul, Phongnarin Chumsaeng, Tiphanan Jaenjai, Khamphee Phomphrai
Summary: This study developed seven constrained aluminum inden complexes for the ring-opening copolymerization of epoxides and bulky cyclic anhydrides, resulting in alternating polyesters. Kinetic studies showed that cyclic anhydride had a zeroth-order dependence on the reaction, while epoxide and the catalyst had a first-order dependence. These catalysts were also used for the one-pot terpolymerization of CHO/PA/L-lactide, producing unusual tapered copolymers.
INORGANIC CHEMISTRY
(2022)
Article
Polymer Science
Yao Chen, Wenchuan Wang, Dong Xie, Lili Wu, Chaocan Zhang
Summary: The binary catalyst of TPPAlCl-PPN+Cl- can effectively initiate the copolymerization of CO2, lactide, and epoxide, leading to the formation of multiblock poly(carbonate-co-lactide) products. The functionality and glass-transition temperature of the products can be easily adjusted by varying the copolymerization variables.
JOURNAL OF POLYMER SCIENCE
(2021)
Article
Polymer Science
Yi-Le Zhang, Wen-Zhen Wang, Li Wang, Lei-Lei Li, Kai-Yue Zhang, Sai-Di Zhao
Summary: This study presents a thermoplastic PPC with cross-linked networks synthesized by copolymerization, showing excellent thermal and mechanical properties as well as dimensional stability.
Article
Chemistry, Multidisciplinary
Z. N. Nysenko, E. E. Said-Galiev, G. G. Nikiforova, M. Buzin, A. A. Glazkov, M. M. Il'in, G. A. Belyaev, V. V. Rusak, A. M. Sakharov
Summary: High-molecular-weight polymers with varying contents of propylene carbonate (PC) and trimethylene carbonate (TMC) units were synthesized by coordination anionic copolymerization in supercritical carbon dioxide. The terpolymerization products were characterized and their thermal behavior was studied.
RUSSIAN CHEMICAL BULLETIN
(2022)
Article
Polymer Science
Tao Li, Zhijian Liu, Yao Chen, Na Sun, Haozhou Shu, Lili Wu, Chaocan Zhang, Dong Xie
Summary: Two-component catalysts were discovered to initiate the polymerization of propylene oxide (PO) and react with rac-lactide (LA) in the presence of PO, resulting in isotactic polylactide (PLA) chains. These catalysts also displayed different catalytic activities in the copolymerization of CO2 and PO, producing poly(carbonate-co-ether) copolymers with varying carbonate unit content (CU%). Additionally, they could initiate one-pot regio- and stereo- selective terpolymerization of rac-LA, CO2, and rac-PO, yielding multi-blocky poly(carbonate-co-lactide) with trace polyether segment.
JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Wenzhen Wang, Xiangmin Zhang, Weiwei Han, Jian Huang, Yile Zhang, Chen Zhao, Leilei Li
Summary: A functional monomer chlorendic anhydride (CA) was successfully added to the polymerization reaction between CO2 and propylene oxide (PO) to create a terpolymer plastic polycarbonates (PPCCA), which exhibited improved thermal properties, mechanical properties, dimensional stability, high degradation, and flame retardancy (FR) properties compared to conventional poly(propylene carbonate) (PPC). The addition of 5 mol% CA led to increased degradation temperatures and strength, decreased elongation at break, reduced hot-set elongation and permanent deformation, and improved flame retardancy.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Polymer Science
Nattawut Yuntawattana, Georgina L. Gregory, Leticia Pena Carrodeguas, Charlotte K. Williams
Summary: This study efficiently prepares copolymers and blends meeting sustainable criteria using a single catalyst and commercial monomers. The resulting polymers are able to enhance toughness and elongation at break of bioplastics without compromising other properties. The selective polymerization catalysis provides a straightforward means to improve bioplastics performances.
Article
Polymer Science
Jin-Chuang Yang, Jun Yang, Tie-Ying Zhang, Xin-Jun Li, Xiao-Bing Lu, Ye Liu
Summary: The development of biodegradable and recyclable polymers has partially solved the problem of realizing a sustainable plastics economy. This study focuses on toughening poly(3-hydroxybutyrate) (P3HB), a highly crystalline thermoplastic material, by reducing its crystallinity through catalytic carbonylative terpolymerization with different enantiopure epoxides. The properties of the resulting PHA copolymers can range from viscous oil to tough/ductile and brittle plastics, depending on the structure and stereochemistry of the epoxides used.
Article
Polymer Science
Chao Chen, Yves Gnanou, Xiaoshuang Feng
Summary: This research describes the design and synthesis of organoboron catalysts for the alternating ring-opening copolymerization (ROCOP) of CO2 with cyclic ethers. The performance of these catalysts was assessed by considering various parameters, such as the type of boron center, the distance between the boron center and the ammonium cation, and the size of the substituents of the cation. Among all the boron-based catalysts, borinane-based catalyst 5 showed the highest productivity in the copolymerization of CO2 and epoxides. Additionally, catalyst 5 could be easily recycled and used as a difunctional initiator. Density Functional Theory computation provided insights into the mechanism of the bifunctional catalyst-mediated CO2 copolymerization and highlighted the importance of the type of boron centers in the overall performance.
Article
Chemistry, Inorganic & Nuclear
Ts'epo R. Tumeli, Juanita L. van Wyk
Summary: A series of new ionic functionalized chromium and cobalt complexes derived from salicylaldimine ligands were synthesized and characterized. The complexes exhibited catalytic activity for the coupling of CO2 and propylene oxide, producing propylene carbonate as the coupling product without the need for a cocatalyst.
INORGANICA CHIMICA ACTA
(2021)
Article
Energy & Fuels
Marina A. Tedeeva, Alexander L. Kustov, Petr V. Pribytkov, Gennady I. Kapustin, Alexander V. Leonov, Olga P. Tkachenko, Obid B. Tursunov, Nikolay D. Evdokimenko, Leonid M. Kustov
Summary: This study investigates the effect of support nature on the catalytic activity of GaOx/SiO2 catalytic systems. The results indicate that a high dispersion of Ga2O3 particles on the support surface and a low acidity of the catalyst can achieve high catalytic activity. The catalyst supported on SiO2 with a larger surface area and a gallium content of 7 wt% exhibits the best performance.
Article
Polymer Science
Zongzi Hou, Nahoko Itagaki, Haruki Kobayashi, Katsufumi Tanaka, Wataru Takarada, Takeshi Kikutani, Midori Takasaki
Summary: In this study, ultrafine PLLA and BC/PLLA fiber webs were successfully prepared via a novel laser electrospinning method. The addition of BC improved UV-shielding efficiencies of the webs, while the degree of order of crystals in the fibers was lower and the molecules had higher mobilities compared to raw fibers.
Article
Chemistry, Multidisciplinary
Yute Wang, Yi Qin, Xiaoli Zhao, Peipei Jia, Zhiyong Zeng, Lin Xu
Summary: In recent years, the construction of BODIPY-based supramolecular fluorescent metallacages through coordination-driven self-assembly has been of increasing interest due to their unique photophysical properties and applications in catalysis, sensing, and bioimaging. Considering the rapid development in this field, it is necessary to summarize recent developments involving BODIPY-based metallacages. This review provides a comprehensive summary of the construction, photophysical properties, and applications of BODIPY-based metallacages.
CHINESE CHEMICAL LETTERS
(2023)
Review
Biochemistry & Molecular Biology
Dina Zhu, Linlin Xu, Yanxia Zhang, Guanxia Liang, Xiaofeng Wei, Liyan Li, Wangjie Jin, Xuan Shang
Summary: This study identified two novel CNVs in two Chinese families with thalassemia patients and provided a comprehensive summary and discussion on the detailed information and mechanisms of these CNVs. The molecular structure characteristics of all known CNVs involving the alpha-globin gene cluster were analyzed and the possible mechanisms were explored.
MOLECULAR GENETICS AND GENOMICS
(2023)
Article
Nutrition & Dietetics
Yingyue Huang, Jiao Wang, Huiling Yang, Zihong Lin, Lin Xu
Summary: This study used bidirectional 2-sample Mendelian randomization to explore the causality between PUFAs and CKD or eGFR. The results suggest that higher levels of omega-6 fatty acids and LA are associated with higher eGFR. However, no association was found between other PUFAs and CKD or eGFR. These findings have public health and research relevance in understanding the role of omega-6 fatty acids in improving kidney function.
AMERICAN JOURNAL OF CLINICAL NUTRITION
(2023)
Article
Engineering, Environmental
Linlin Ma, Baoxiu Hou, Hui Zhang, Shitao Yuan, Bin Zhao, Yuan Liu, Xinran Qi, Haiyan Liu, Shuaihua Zhang, Jianjun Song, Xiaoxian Zhao
Summary: In this study, core-shelled hollow sphere FeS2 (CHS-FeS2) was synthesized using modified MIL-88B(Fe) as templates to improve the Na+ diffusion kinetic and alleviate the volume expansion. Results showed that CHS-FeS2 exhibited high specific capacity, excellent cycling stability, and rate capability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Ying Wang, Ze-Xin Li, Jian-Guo Wang, Lu-Hao Li, Wen-Long Shen, Xiao-Wei Dang
Summary: Deubiquitinating enzymes (DUBs) have been identified as potential targets for hepatocellular carcinoma (HCC) treatment. This study revealed that Josephin-2 expression was negatively correlated with HCC patient survival. Functional assays demonstrated that knockdown of Josephin-2 attenuated HCC cell malignant behavior and reduced the formation of cancer stem cells.
Article
Geochemistry & Geophysics
Xinwei Chen, K. Andrea Scott, Linlin Xu, Mingzhe Jiang, Yuan Fang, David A. Clausi
Summary: Algorithms designed for ice-water classification of SAR sea ice imagery produce binary output using only a small subset of labeled samples, limiting their effectiveness. To address this, we implemented a Bayesian CNN with variational inference to consider uncertainty associated with each pixel. Testing on 21 SAR scenes showed positive correlation between misclassification rate and model uncertainty, and higher uncertainty during challenging transition periods. By incorporating segmentation and thresholding algorithms, the Bayesian CNN classification outputs were significantly improved.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Chemistry, Multidisciplinary
Hong-Yu Lin, Le-Yong Zhou, Fang Mei, Wei-Tao Dou, Lianrui Hu, Hai-Bo Yang, Lin Xu
Summary: Developing a new strategy to improve the self-assembly efficiency and construct hybrid functional materials in a confined space is the focus of this study. A highly efficient strategy for achieving the supramolecular self-assembly of metallacages in microdroplets through continuous-flow microfluidic devices was proposed. The versatility and high efficiency of this approach were demonstrated by the generation of five representative metallacages in different solvents within minutes, with nearly quantitative yields. The study also explored the supramolecular catalysis in microdroplets, showing an enhanced catalytic yield compared to the batch reactor.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Editorial Material
Polymer Science
Lin-Lin Xu, Fan Huang, Lin-Qi Shi
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Environmental Sciences
Sheng-Ji Yang, Yong-Sheng Wang, Li-Dan Zhang, Zhi-Ming Ding, Xu Zhou, Ze-Qun Duan, Ming Liu, Ai-Xin Liang, Li-Jun Huo
Summary: This study demonstrated that exposure to propyl gallate (PG) compromised oocyte meiotic maturation in mice by inducing mitochondrial stress, activating apoptosis, inducing DNA damage, and increasing oxidative stress, as well as altering histone methylation level.
ENVIRONMENTAL TOXICOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yi-Ming Zhang, Shuai Zhang
Summary: This letter presents a two-port dual-band filtering network that can be integrated with antennas for dual-band filtering antenna applications in sub-6 GHz systems. The proposed network consists of a slotline resonator and two stub groups, featuring second- and third-order resonant characteristics at different frequencies. The performance of the network is verified through analysis using equivalent circuits. Additionally, a prototype of the filtering antenna array, operating at 3.5 and 4.9 GHz, is fabricated and demonstrates sharp roll-off, low insertion loss, high polarization purity, and wide fractional bandwidth.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Chemistry, Physical
Xiaohui Mao, Feifei Wang, Baoshan Lu, Tian Tang, Qi Liu, Hongbo Zeng
Summary: In this study, a novel polymer nanoparticle PBM@PDM was synthesized and used as a demulsifier for stable water-in-oil (W/O) or oil-in-water (O/W) emulsions. PBM@PDM could immediately induce coalescence of water droplets and effectively release water in W/O emulsion. It also successfully destabilized O/W emulsion stabilized by asphaltenes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Yang Li, Xiaohuan Zang, Yahuan Li, Shuaihua Zhang, Chun Wang, Zhi Wang
Summary: A defective UiO-66 with rich defect sites was synthesized and used as the SPME fiber coating material. The defective UiO-66 coating showed high adsorption capability for selectively extracting fungicides. A SPME method with the defective UiO-66 as the fiber coating combined with GC-MS detection was established for sensitive and selective determination of five fungicides in fruit samples. The method exhibited satisfactory recoveries and good precisions.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Xue Wu, Ding Li, Lei Xu, Yu-Fei Jiang, Yue Zhao, Jing Zhao
Summary: Recently, two novel Cd(II)-based metal-organic frameworks (MOFs) were synthesized and showed fluorescence sensing capacity for arginine, which has attracted considerable attention in the fields of nutrition analysis, health monitoring, and medical diagnosis. The structures of the complexes were found to have significant differences due to variations in the coordination modes and extension direction of the Cd-bib coordination complexes.
Article
Clinical Neurology
Xiaolin Wang, Weinan Na, Ying Yang, Wenwen Zhang, Junxia Zhao, Tingting Zhang, Yuanji Zhou, Hua Liu, Dong Zhao, Shengyuan Yu
Summary: In this study, 1444 female patients with migraine without aura (MWA) were divided into three groups (J1, J2, and J3) based on the association of MWA onset with menarche and childbirth. The J1 and J2 groups showed more typical migraine features compared to the J3 group, while the J3 group had higher rates of emotional and sleep disorders, weight management issues, frequent migraine attacks, and medication overuse. This study provides a basis for further understanding and treatment of MWA.
JOURNAL OF HEADACHE AND PAIN
(2023)
Article
Environmental Sciences
Qile Hu, Huangwei Shi, Li Wang, Lu Wang, Yong Hou, Hongliang Wang, Changhua Lai, Shuai Zhang
Summary: As the world's largest pork producer, China faces significant environmental pressures from pig and feed production. This study examines the carbon and nitrogen footprints and land use of pig production in China and finds that the net energy system is effective in improving the environmental sustainability of pork production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
