Article
Polymer Science
Jian Xia, Shuqing Kou, Hongliang Mu, Zhongbao Jian
Summary: In this study, a new family of unsymmetrical alpha-diimine nickel catalysts was prepared and showed high activity and selectivity in ethylene and 1-hexene polymerization, resulting in the production of linear semicrystalline polyolefins.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Lei Zhao, Yuqin Zhu, Mengyuan Liu, Leipeng Xie, Jimin Liang, Haoran Shi, Xiao Meng, Zhengyang Chen, Jian Han, Chao Wang
Summary: A new catalytic reaction method for predictable and switchable regioselective hydroalkylation has been reported. By employing a specific strategy, alkyl units can be selectively installed at inert sp(3) C-H sites near the C=C bonds, allowing for convenient synthesis of structurally diverse protected amines.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Min Zhang, Yuqi Ji, Chun Zhang
Summary: This review summarized the researches on the asymmetric chain-walking reactions catalyzed by transition metal in the past decade, classified according to the species of metal catalysts.
CHINESE JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Applied
Jie Wu, Pei Li, Juan Zhang, Zhengquan Dong, Wu Li, Muhammad Sohail Bashir, Yougui Li, Fuzhou Wang
Summary: A class of nickel (II) complexes with variable electronic nature were synthesized and characterized. X-ray crystallography analysis showed that these complexes have a distorted tetrahedral geometry and can be used for chain-walking polymerization to obtain highly active and high molecular weight branched polymers.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yulong Zhang, Jun He, Peihong Song, You Wang, Shaolin Zhu
Summary: This study presents a non-directed, remote sp(3)C-H amination process with predictable and switchable regioselectivity, demonstrating efficient functionalization reactions. Depending on the choice of ligand, different types of functionalization products can be obtained, expanding the possibilities of introducing functional groups.
Article
Chemistry, Physical
Yixin Zhang, Yuxing Zhang, Xiaoqiang Hu, Chaoqun Wang, Zhongbao Jian
Summary: This article discusses key advances in controlling chain walking and suppressing chain transfer reactions in late-transition-metal-mediated olefin polymerization to achieve precise control over polymer architectures.
Article
Chemistry, Physical
Yixin Zhang, Yuxing Zhang, Xiaoqiang Hu, Chaoqun Wang, Zhongbao Jian
Summary: This article highlights the key advances in controlling chain walking and suppressing chain transfer reactions in late-transition-metal-mediated olefin polymerization to achieve precise synthesis of polyolefin materials.
Article
Chemistry, Physical
Peng-Fei Yang, Jian-Xing Liang, Han -Tong Zhao, Wei Shu
Summary: In this study, a straightforward method to access enantioenriched 1,n-diamines containing a chiral alpha-branched aliphatic amine is achieved through Ni-catalyzed asymmetric hydroamination. This method delivers good yields and excellent enantioselectivities with diverse substitution patterns, and exhibits excellent functional group tolerance.
Article
Chemistry, Applied
Tong Lei, Zhanshan Ma, Hongju Liu, Xiaoyue Wang, Pei Li, Feifei Wang, Weitai Wu, Shaojie Zhang, Guoyong Xu, Fuzhou Wang
Summary: A series of alpha-diimine nickel(II) catalysts with different para-substituents were synthesized and characterized. The introduction of para-substituents efficiently modulated the chain-walking process in the catalyst system, leading to improved thermal stability and catalytic performance.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Lingpu Meng, Jingjie Yang, Mei Duan, You Wang, Shaolin Zhu
Summary: Regio- and enantioselective hydroarylamination, hydroalkylamination and hydroamidation of styrenes have been developed using NiH catalysis with a simple bioxazoline ligand under mild conditions. A variety of enantioenriched benzylic arylamines, alkylamines and amides can be easily accessed by employing nitroarenes, hydroxylamines and dioxazolones as amination reagents. Chiral induction in these reactions is proposed to proceed through an enantiodifferentiating syn-hydronickellation step.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Kwanchanok Udomsasporn, Phongnarin Chumsaeng, Khamphee Phomphrai
Summary: A new series of catalysts for ethylene and ethylene/1-hexene (co)polymerizations, with constrained hydroxyindanone-imine ligands for titanium(IV) and zirconium(IV) metals, were developed. The catalysts exhibited significantly higher open space compared to conventional FI counterparts according to X-ray crystal structures. After activation with MAO, the catalysts showed significantly increased ethylene polymerization activities and nearly doubled 1-hexene content in ethylene/1-hexene copolymerizations, attributed to the constrained five-membered ring backbone.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Mohadeseh Bagherabadi, Gholamhossein Zohuri, Navid Ramezanian, Mahsa Kimiaghalam, Mostafa Khoshsefat
Summary: Homogenous catalytic homopolymerization and copolymerization of 1-hexene with methyl methacrylate were conducted in the presence of different mononuclear and dinuclear Ni-based catalysts. Introduction of MMA into the polymerization solution increased the activity of all catalysts, and the tacticity of the obtained copolymers varied with the MMA molar ratio.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Yangyang Li, Hong Wei, Guoyin Yin
Summary: We report a comparatively under-researched migratory difunctionalization of alkenes, which is a nickel-catalyzed, divergent, solvent-controlled 1,1- or 1,3-regioselective benzylboration of allylbenzenes. This reaction provides efficient access to primary and secondary alkyl boronates with good regioselectivity and wide functional group tolerance.
TETRAHEDRON LETTERS
(2022)
Article
Chemistry, Applied
Yuan Fang, Heng Zhao, Xiaoyu Guo, Yingluo He, Guohui Yang, Noritatsu Tsubaki
Summary: This study designs a novel core-shell structured catalyst, comprised of Rhodium nanoparticles (Rh NPs) homogeneously encapsulated in a silicalite-1 zeolite (Rh@S-1), for 1-hexene hydroformylation. The catalyst exhibits a high conversion of 1-hexene up to 85.8%, and a ratio of n-heptanal to iso-heptanal reaching 2.5 at 90 degrees C. The outstanding catalytic activity of this core-shell structured catalyst can be explained by the highly active homogeneously dispersed Rh NPs and the distinguishable mass transfer effect of the unique and orderly micropores structure of silicalite-1 zeolite.
Article
Chemistry, Multidisciplinary
Weiyu Kong, Yang Bao, Liguo Lu, Zhipeng Han, Yifan Zhong, Ran Zhang, Yuqiang Li, Guoyin Yin
Summary: We have developed a method for chain-walking carboborations of cyclohexenes based on nickel catalysis, achieving site- and stereoselective control of chain-walking on rings. Unlike the 1,4-trans-selectivity in polymer science, our reactions exhibit a high level of 1,3-regio- and cis-stereoselectivity. This study provides a concise and modular method for the synthesis of 1,3-disubstituted cyclohexylboron compounds, with the incorporation of a readily modifiable boronate group enhancing its synthetic potential.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Jialong Wu, Yongwei Wu, Zepeng He, Zihua Li, Huahua Huang, Yongming Chen, Guodong Liang
Summary: This study reports a facile and highly efficient synthetic method for preparing organic photothermal materials, obtaining conjugated microporous polymers with abundant micropores and extended pi-conjugated skeleton through polymerization of commercial aromatic monomers. These materials exhibit outstanding NIR photothermal performance and can be used as photothermal fillers to control shape recovery of thermal-sensitive shape memory polymers.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xueqian Zhao, Parvej Alam, Jianyu Zhang, Shiyun Lin, Qian Peng, Jun Zhang, Guodong Liang, Sijie Chen, Jing Zhang, Herman H. Y. Sung, Jacky W. Y. Lam, Ian D. Williams, Xinggui Gu, Zheng Zhao, Ben Zhong Tang
Summary: Materials exhibiting metallophilic interactions have unique photophysical and stimuli-responsive behavior. This study reports a new phosphorescent gold(I) complex that displays mechanochromic and thermochromic luminescence properties in the crystalline state.
Article
Chemistry, Multidisciplinary
Faxu Lin, Haiyang Wang, Yifeng Cao, Rujun Yu, Guodong Liang, Huahua Huang, Yingxiao Mu, Zhiyong Yang, Zhenguo Chi
Summary: This study presents a universal strategy to combine infrared persistent luminescent materials with red and near-infrared dyes through stepwise Förster resonance energy transfer (FRET), solving the issue of inadequate spectral overlap.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Wenjie Tao, Yusheng Zhou, Faxu Lin, Haiyang Gao, Zhenguo Chi, Guodong Liang
Summary: This study reports a new type of mechanically responsive materials, RTP polymers, which possess both mechanochromic and mechanodecay characteristics. These polymers exhibit abundant changes in fluorescence intensity, emission color, RTP intensity, and RTP lifetime under force stimuli, enabling the detection of material deformation. Through phosphorescence lifetime and image analysis, early damage warning for engineering polymers can be achieved.
ADVANCED OPTICAL MATERIALS
(2022)
Review
Polymer Science
Chi Shing Cheung, Xinbo Shi, Lixia Pei, Cheng Du, Heng Gao, Zonglin Qiu, Haiyang Gao
Summary: In this review, we introduce the present status and synthesis methods of aromatic polyketones made from vinyl arene and CO. The use of [N,N] bidentate palladium catalysts in catalytic synthesis is discussed, along with the effects of vinyl arene monomer, counteranion, and solvent on copolymerization. The stereochemistry of copolymerization is also addressed.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Engineering, Environmental
Mingliang Ge, Xinxiang Li, Yueying Li, S. M. Jahangir Alam, Yuee Gui, Yongchao Huang, Luoxiang Cao, Guodong Liang, Guoqing Hu
Summary: In this study, a nanohybrid drug carrier was synthesized using the PETE method and its sustained-release properties were controlled. The results of XRD, FTIR, and SEM analysis showed that the carrier successfully encapsulated sodium alginate and metronidazole, and the slow-release mechanism was explained.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Polymer Science
Wenbo Du, Handou Zheng, Yinwu Li, Chi Shing Cheung, Donghui Li, Heng Gao, Huiyun Deng, Haiyang Gao
Summary: This study developed a new neutral nickel catalyst with good thermal stability and high tolerance towards polar monomers. The copolymerization reaction using this catalyst produced branched copolymers with high molecular weight and high monomer incorporation, similar to commercially prepared products. Density functional theory calculations provided insights into the mechanism of copolymer formation.
Review
Chemistry, Physical
Huiyun Deng, Handou Zheng, Heng Gao, Lixia Pei, Haiyang Gao
Summary: This review focuses on late transition metal catalysts with chelating amines for olefin polymerization. A variety of catalysts with different amine donors are surveyed, and the relationship between catalyst structure and catalytic performance is discussed. The aim is to promote the development of high-performance polyolefin materials.
Article
Engineering, Environmental
Yusheng Zhou, Longming Jin, Jinqing Chen, Wei Hong, Guodong Liang, Wei Qin
Summary: Organic persistent luminescence (OPL) with multi-dimensional stimuli-response is achieved through a rational design, using a single organic phosphor and amorphous polymer that can respond to time, temperature, humidity, and excitation. The amorphous polymer films with dual-mode OPL are easily fabricated by combining doping strategy and confinement effect. The multifunctional OPL system includes dual-mode afterglow, time-, temperature-, excitation- and humidity-dependent afterglow color, and finds applications in temperature measuring, in-situ humidity sensing, anti-counterfeiting, and data encryption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Haiyang Wang, Tian Qin, Wen Wang, Xie Zhou, Faxu Lin, Guodong Liang, Zhiyong Yang, Zhenguo Chi, Ben Zhong Tang
Summary: In this study, new selenium-containing type-I photosensitizers Se6 and Se5 with benzoselenadiazole acceptor were designed and showed aggregation-induced emission characteristic. Se6 exhibited a smaller energy gap (Delta E-ST) of 0.03 eV and improved ROS efficiency, generating both long-lived superoxide anion (O-2(center dot-)) and short-lived hydroxyl ((OH)-O-center dot) upon irradiation. Simultaneous processes to produce (OH)-O-center dot were revealed, including disproportionation of O-2(center dot-) and reaction between excited PS and water. Se6 demonstrated superior in-vitro PDT performance to commercial chlorin e6 (Ce6) under normoxia or hypoxia, and a significantly higher tumor growth inhibition rate of 99% was observed in the in-vivo PDT performance of Se6. These findings provide new insights for both molecular design and mechanism study of type-I photosensitizers.
Article
Materials Science, Multidisciplinary
Jinzheng Chen, Faxu Lin, Guodong Liang, Huahua Huang, Tian Qin, Zhiyong Yang, Zhenguo Chi
Summary: In this work, a series of asymmetric diarylamine guests were designed and prepared to construct host-guest systems with stimuli-responsive room-temperature phosphorescence (RTP). The FRET process changes were revealed to be the key to the stimulus-responsive RTP. The DMAP/MDPA-Ph system showed the best RTP performance.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zihua Li, Yusheng Zhou, Yuhan Cui, Guodong Liang
Summary: Efficient electrochemiluminescent (ECL) luminogens were synthesized and used to fabricate a solid-state ECL film with unique dual-potential ECL properties. The film showed bright ECL with high efficiency and was successfully applied for the sensitive detection of malachite green (MG) in a real fish tissue sample. The study provides a promising platform for the sensitive detection of MG in the food industry.
Article
Materials Science, Biomaterials
Zihua Li, Yusheng Zhou, Yuhan Cui, Guodong Liang
Summary: A bright surface-enhanced electrochemiluminescence film (SEEF) was fabricated with low driving potential and easy observation. The film had adjustable electrochemiluminescence brightness and exhibited flexibility and stability. It was also used for biomolecule detection in aqueous media with a record-low limit of detection.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Polymer Science
Yuhan Cui, Yusheng Zhou, Guodong Liang
Summary: A novel TFN with good stability and visual detection capabilities was designed and constructed for the sensitive detection of aromatic amines in water. The nano-sheets can absorb organic pollutants in water, transitioning into small nano-spheres for visual detection.
