A5054519421- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organometallic Complex Synthesis and Catalysis
- Carbon dioxide utilization in catalysis
- biodegradable polymer synthesis and properties
- Synthetic Organic Chemistry Methods
- Coordination Chemistry and Organometallics
- Synthesis and characterization of novel inorganic/organometallic compounds
- Crystallography and molecular interactions
- Organoboron and organosilicon chemistry
- Advanced biosensing and bioanalysis techniques
- Catalytic Processes in Materials Science
- RNA Interference and Gene Delivery
- Genetic Mapping and Diversity in Plants and Animals
- Wheat and Barley Genetics and Pathology
- Catalytic Cross-Coupling Reactions
- Asymmetric Hydrogenation and Catalysis
- Catalysis and Oxidation Reactions
- Lanthanide and Transition Metal Complexes
- Genetics and Plant Breeding
- Silicone and Siloxane Chemistry
- Nematode management and characterization studies
- Molecular Junctions and Nanostructures
- Metal-Organic Frameworks: Synthesis and Applications
- Corporate Finance and Governance
Changchun Institute of Applied Chemistry
2015-2025
State Key Laboratory of Polymer Physics and Chemistry
2015-2025
Chinese Academy of Sciences
2015-2025
University of Science and Technology of China
2019-2025
Fuzhou University
2025
China Agricultural University
2022-2025
Ludong University
2022-2024
Capital Medical University
2021-2024
Central South University
2007-2023
Qingdao University of Science and Technology
2023
Despite the recent advances of deep reinforcement learning (DRL), agents trained by DRL tend to be brittle and sensitive training environment, especially in multi-agent scenarios. In setting, a agent’s policy can easily get stuck poor local optima w.r.t. its partners – learned may only locally optimal other agents’ current policies. this paper, we focus on problem robust with continuous actions setting so that still generalize when opponents’ policies alter. To tackle problem, proposed new...
Abstract Stereoselective coordination/insertion polymerization of the polar ortho ‐methoxystyrene has been achieved for first time by using cationic β‐diketiminato rare‐earth‐metal species. High activity and excellent isoselectivity ( mmmm >99 %) were acheived. The unmasked Lewis‐basic methoxy group does not poison Lewis‐acidic metal center, but instead activates through σ‐π chelation to active species together with vinyl group, thus lower coordination activation energies as compared...
Lithiation of the β-diketimines (2,6-C6H3R2)NH═C(Me)CH═C(Me)N(2,6-C6H3R2) (R = Me (HL1), Et (HL2)) by nBuLi was followed metathesis reaction with LnCl3(THF)x and Y(BH4)3(THF)2 to afford corresponding complexes L1LnCl2(THF)2 (Ln Gd (1), Nd (3), Dy (4), Er (5), Y (6)), L2GdCl2(THF)2 (2), L1Y(BH4)2(THF) (8), respectively. Treatment neutral HL1 Y(CH2SiMe3)3(THF)2 generated bis(alkyl) complex 7, L1Y(CH2SiMe3)2(THF). Upon activation [PhNHMe2][B(C6F5)4] AliBu3, 6 showed highest cis-1,4 selectivity...
The ability to regulate cell-material interactions is important in various applications such as regenerative medicine and cell separation. This study successfully demonstrates that the binding states of cells on a hydrogel surface can be programmed by using hybridized aptamers triggering complementary sequences (CSs). In absence CSs, exhibit stable, state for cell-type-specific catch. presence are transformed into new leads rapid dissociation from hydrogel. As result, released entire...
A highly isotactic stereoblock PLA has been obtained using the achiral heteroscorpionate zwitterionic zinc complexes as catalysts, for first time, via a chain-end control mechanism.
Alternating copolymers have the clearest and most defined microstructures among manmade polymers, having been promising building blocks to access synthetic polymers able mimic biomaterials. The successful approaches employ donor–acceptor monomer couples, enantiomers with different substituents, as well specially designed cyclic monomers containing various units through ionic living radical polymerizations. Herein we report catalytic behaviors of rare-earth metal-based catalyst systems toward...
The N,N-bidentate ligand 2-{(N-2,6-diisopropylphenyl)iminomethyl)}pyrrole (L1) and the N,N,P-tridentate 2-{(N-2-diphenylphosphinophenyl)iminomethyl)}pyrrole (L2) have been prepared. Their reactions with homoleptic yttrium tris(alkyl) compound Y(CH2SiMe3)3(THF)2 investigated. Treatment of 1 equiv L1 generated a THF-solvated bimetallic (pyrrolylaldiminato)yttrium mono(alkyl) complex (1) central symmetry. In this process, is deprotonated by metal alkyl its imino CN group reduced to C−N...
Deprotonation of Ar1NHPPh2NAr2 (H[NPN]n, n = 1−10) by Ln(CH2SiMe3)3(THF)2 (Ln Lu, Y, Sc, Er) generated a series rare-earth metal bis(alkyl) complexes [NPN]nLn(CH2SiMe3)2(THF)2 (1−10), which under activation with [Ph3C][B(C6F5)4] and AliBu3 were tested for isoprene polymerization. The correlation between catalytic performances molecular structures the has been investigated. Complexes 1−5 8, where Ar1 is nonsubstituted or ortho-alkyl-substituted phenyl, adopt trigonal-bipyramidal geometry. Ar2...
New rare earth metal bis(alkyl) complexes [(NPNPh)Ln(CH2SiMe3)2(THF)] (NPNPh: N(Ph)PPh2═NC6H2Me3-2,4,6; Ln = Sc (3a), Y (3b), Lu (3c)) and [(NPNPy)Sc(CH2SiMe3)2(THF)] (NPNPy N(Py)PPh2═NC6H2Me3-2,4,6) (3d)) have been prepared via protonolysis reaction between tris(alkyl)s the corresponding iminophosphonamines. Complexes 3a−d are analogous monomers of THF solvate. Each ion coordinates to a η2-chelated NPN ligand two cis-located alkyl groups, adopting tetrahedron geometry. The scandium complex...
The N,O-bidentate pyridyl functionalized alkoxy ligands 2-(6-methyl-2-pyridinyl)-1,1-dimethyl-1-ethanol (L1–H) and 2-(6-methyl-2-pyridinyl)-1,1-diphenyl-1-ethanol (L2–H) have been prepared by treatment of acetone benzophenone with monolithiated 2,6-lutidine. Deprotonolysis the L1–H L2–H 1 equiv MgnBu2 ZnEt2 in toluene releasing butane ethane, respectively, gave corresponding dimeric metal-monoalkyl complexes [L1MgnBu]2 (1), [L2MgnBu]2 (2), [L1ZnEt]2 (3), [L2ZnEt]2 (4). Complexes 1–4 were...
The polymerization of bio-renewable myrcene (MY), using a cationic β-diimidosulfonate lutetium catalyst in high activity, afforded an unprecedented isotactic 3,4-polymyrcene (PMY) with low Tg (-42 °C). Based on this result, the random and block copolymerization isoprene (IP) resulted novel elastomers that comprise amorphous iso-3,4-PMY iso-3,4-PIP sequences.
Alkane elimination reactions of phosphinimino-amine ligands HL1–8 ((2,6-Me2-C6H3NH)C(Ph)═CHPPh2(NAr) (Ar = C6H5 (HL1); 2,6-Me2-C6H3 (HL2); 2,6-Et2-C6H3 (HL3); 2,6-iPr2-C6H3 (HL4); 2-OMe-C6H4 (HL5); 2-Cl-C6H4 (HL6); 3-CF3-C6H4 (HL7); 4-MeO-C6H4 (HL8)) with MgnBu2, respectively, afforded a series phosphinimino-amine-based complexes L1–8MgnBu(THF) (1–8) by releasing butane. Complexes 1–8 are phosphinimino-amine-ligated THF-solvated mono(alkyl)s, among which 1–4 adopt twisted tetrahedral...
The rare-earth metal complexes bearing NSN-bidentate β-diimidosulfonate ligands (RNSNdipp)Ln(CH2SiMe3)2(THF)n (R = Ph, Ln Lu (1a), n 1, Y (1b), 2, Sc (1c), 1; R PhNMe2, (1d), 1) were synthesized by treatment of the ion-pairs [Ln(CH2SiMe3)2(THF)x][BPh4] with equimolar amount ligand lithium salts (RNSNdipp)Li(THF)2 (NSNdipp S(NC6H4iPr2-2,6)2). Addition reaction between lutetium tris(alkyl)s, Ln(Z)3(THF)n and NSNdipp gave corresponding dialkyl (ZNSNdipp)Lu(Z)2(THF)n (Z CH2SiMe3, 1 (1e); Z...
The bis-arylated phosphazene compounds [HN(PPh2NAr)2] (Ar = phenyl (HL1), 2,6-dimethylphenyl (HL2), 2,6-diisopropylphenyl (HL3)) and the imidodiphosphinate compound HN(PPh2O)2 (HL4) have been prepared via Staudinger reaction. Treatment of neutral HL1, HL2, HL3 with Ln(CH2SiMe3)3(THF)2 (Ln Sc, Y, Lu) generated solvent-free bis(alkyl) complexes L1Ln(CH2SiMe3)2 Sc (1a), Y (1b), Lu (1c)), L2Sc(CH2SiMe3)2 (2a), L3Y(CH2SiMe3)2 (3b), L3Lu(CH2SiMe3)2 (3c), respectively. reaction between HL4...
A series of aluminum complexes LaAl2Me4 (1), Lb2Al4Me4 (2), and LcAl2Me4 (3) have been prepared from the reaction AlMe3 with Salan- Salen-type ligands (LaH2 = [2-OH-3,5-tBu2-C6H2CH2N(CH3)]2-(m-phenylene); LbH4 [2-OH-3,5-tBu2-C6H2CH2NH]2-(m-phenylene); LcH2 [2-OH-3,5-tBu2-C6H2CH═N]2-(m-phenylene)), respectively. All these were characterized by NMR spectroscopy, X-ray diffraction, elemental analyses, 1 3 adopting binuclear structures, while complex 2 being tetranuclear. In presence alcohol,...
Abstract Background Root-knot nematodes (RKNs) pose a worldwide threat to agriculture of many crops including cucumber. Genetic transformation (GT) has emerged as powerful tool for exploration plant-RKN interactions and genetic improvement RKN resistance. However, it is usually difficult achieve highly efficient stable GT protocol most due the complexity this process. Results Here we firstly applied hairy root system in exploring root-RKN cucumber plants developed rapid using Rhizobium...
Vascular tissue development plays a pivotal role in plant growth and defense against biotic stress. Root-knot nematodes, particularly Meloidogyne incognita (M. incognita), are globally distributed phytopathogens that cause severe economic losses variety of vascular plants. In this study, three bundle development-related genes, including CsBAS1, CsSND1, CsIRX6, were identified cucumber. Tissue-specific expression analysis revealed CsSND1 CsIRX6 highly expressed roots. Infection with M. showed...
Deprotonation of m-phenylene-bridged bis(β-diketiminate) ligands (PBDIiPr-H2 = [2,6-iPr2C6H3NHC(Me)C(H)C(Me)N]2-(m-phenylene); PBDIEt-H2 [2,6-Et2C6H3NHC(Me)C(H)C(Me)N]2-(m-phenylene); PBDIMe-H2 [2,6-Me2C6H3NHC(Me)C(H)C(Me)N]2-(m-phenylene)) by rare-earth-metal tris(alkyls) Ln(CH2SiMe3)3(THF)2 (Ln Y, Lu, Sc) gave a series bis(alkyl) complexes: PBDIiPr-[Y(CH2SiMe3)2]2(THF)2 (1), PBDIEt-[Ln(CH2SiMe3)2]2(THF)n (2a, Ln n 2; 2b, 2c, Sc, 1), and PBDIMe-[Y(CH2SiMe3)2]2(THF)2 (3). All these complexes...
Die ersten ihrer Art: Der Scandiumborylkomplex 1 und der analoge Gd-Komplex wurden durch Reaktion einer Boryllithiumverbindung mit [Ln(CH2SiMe3)2(thf)x][BPh4] (Ln=Sc, Gd) hergestellt. Umsetzung von N,N′-Diisopropylcarbodiimid ergab den Bis(amidinat)-Komplex 2, doppelte CO-Insertion in die Sc-B-Bindung, nukleophile Addition eines Amidinats Wanderung SiMe3-Gruppe zur resultierenden Keteneinheit das Produkt 3 bildete. Detailed facts of importance to specialist readers are published as...
The amidino-modified N-heterocyclic carbene ligated lutetium bis(alkyl) complex 1, (Am-NHC)Lu(CH2SiMe3)2, was synthesized by treatment of (AmH-NHC-H)Br ((2,6-iPrC6H3N═C(C6H5)NHCH2CH2(NCHCHN(C6H2Me3-2,4,6)CH)Br) with ((trimethylsilyl)methyl)lithium (LiCH2SiMe3) and tris(alkyls) (Lu(CH2SiMe3)3(THF)2) via double-deprotonation reactions characterized NMR spectroscopy X-ray diffraction analysis. Under activation an organoborate, 1 exhibited distinguished catalytic performance for the...