A5028701109- Carbon dioxide utilization in catalysis
- Synthetic Organic Chemistry Methods
- Organometallic Complex Synthesis and Catalysis
- biodegradable polymer synthesis and properties
- Oxidative Organic Chemistry Reactions
- Catalysis for Biomass Conversion
- Organoboron and organosilicon chemistry
- Catalysis and Oxidation Reactions
- Chemical Synthesis and Reactions
- Catalytic Processes in Materials Science
- Mesoporous Materials and Catalysis
- Catalytic Cross-Coupling Reactions
- Advanced Polymer Synthesis and Characterization
- Microplastics and Plastic Pollution
- Soil Carbon and Nitrogen Dynamics
- Catalysts for Methane Reforming
- Vanadium and Halogenation Chemistry
- Environmental Quality and Pollution
- Porphyrin and Phthalocyanine Chemistry
- Soil erosion and sediment transport
- Remote Sensing and Land Use
- Innovation Policy and R&D
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Soil and Unsaturated Flow
- Catalysis and Hydrodesulfurization Studies
University of Chinese Academy of Sciences
2008-2025
Beijing University of Technology
2012-2025
Chinese Academy of Sciences
2013-2024
Shanghai Institute of Organic Chemistry
2017-2024
Nanjing University of Information Science and Technology
2024
Ningxia University
2011-2020
Colorado State University
2014-2016
Dalian Institute of Chemical Physics
2004-2015
Dalian National Laboratory for Clean Energy
2015
State Key Laboratory of Polymer Physics and Chemistry
2008-2013
Developing recyclable polymers provides a solution to materials' end-of-life issues and also an approach establish circular materials economy.
Abstract Soil as the largest global carbon pool has played a great role in sequestering atmospheric dioxide (CO 2 ). Although sequestration potentials have been assessed since 1980s, few investigations made on soil (SCS) China's cropland. China is developing country and long history of agricultural activities. Estimation SCS cropland very important for assessing potential measures to prevent rise predicting CO concentration future. After review available results field experiments China,...
Abstract The first effective organopolymerization of the biorenewable “non‐polymerizable” γ‐butyrolactone (γ‐BL) to a high‐molecular‐weight metal‐free recyclable polyester is reported. superbase tert ‐Bu‐P 4 found directly initiate this polymerization through deprotonation γ‐BL generate reactive enolate species. When combined with suitable alcohol, ‐based system rapidly converts into polyesters high monomer conversions (up 90 %), molecular weights ( M n up 26.7 kg mol −1 ), and complete...
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α-Methylene-γ-butyrolactone (MBL), a naturally occurring and biomass-sourced bifunctional monomer, contains both highly reactive exocyclic C═C bond stable five-membered γ-butyrolactone ring. Thus, all previous work led to exclusive vinyl-addition polymerization (VAP) product P(MBL)VAP. Now, this reverses conventional chemoselectivity enable the first ring-opening (ROP) of MBL, thereby producing exclusively unsaturated polyester P(MBL)ROP with Mn up 21.0 kg/mol. This elusive goal was achieved...
Abstract This contribution reports the efficient conversion of γ‐valerolactone and its derivatives, abundant but unexplored renewable feedstocks, into sustainable degradable polythioesters via establishment first isomerization‐driven ring‐opening polymerizations (IROPs) corresponding thionolactone intermediates. The key to this success relies on development a new simple robust [Et 3 O] + [B(C 6 F 5 ) 4 ] − cationic initiator which possesses high activity, exclusive selectivity, living...
[Reaction: see text] Purely organic and catalytic systems of anthraquinones N-hydroxyphthalimide efficiently promote oxygenation hydrocarbons with dioxygen under mild conditions, e.g., fluorene can be converted completely to fluorenone 85% yield at 80 degrees C.
Despite several anticipated advantages of the bioderived γ-butyrolactone (γ-BL) as an effective comonomer to modulate materials properties its copolyesters, currently unmet challenge hinders access such copolyesters with high γ-BL incorporations due unfavorable thermodynamics toward ring-opening polymerization highly stable, typically referred "nonstrained", γ-BL. Here we report copolymerization two common cyclic esters very different monomer thermodynamic polymerizability, ε-caprolactone...
Novel cyclic olefin copolymer (COC) with high glass transition temperature, good mechanical performance, transparency, and excellent film forming ability has been achieved in this work by effective copolymerization of ethylene exo-1,4,4a,9,9a,10-hexahydro-9,10(1′,2′)-benzeno-l,4-methanoanthracene (HBMN). This bulky comonomer can be simply prepared yield via Diels–Alder reaction. By utilizing constrained geometry catalyst (CGC) activated Al(iBu)3/[Ph3C][B(C6F5)4], ethylene/HBMN obtained...
Abstract This contribution reports an unprecedentedly efficient dimerization and the first successful polymerization of lignocellulose‐based β‐angelica lactone (β‐AL) by utilizing a selective Lewis pair (LP) catalytic system, thereby establishing versatile bio‐refinery platform wherein two products, including dimer for high‐quality gasoline‐like biofuel (C 8 –C 9 branched alkanes, yield=87 %) heat‐ solvent‐resistant acrylic bioplastic ( M n up to 26.0 kg mol −1 ), can be synthesized from one...
Reported herein is the first coordination–insertion ring-opening copolymerization of α-methylene-γ-butyrolactone (MBL) and ε-caprolactone (ε-CL) catalyzed by f-block lanthanide (Ln) catalysts, Ln[N(SiMe3)2]3, that produce exclusively an unsaturated copolyester PMBL-co-PCL without coproducing any homopolymer PMBL. Accomplishing such synthesis requires effective strategies to meet two key challenges: γ-butyrolactone (γ-BL) ring in MBL—the five-membered lactone well recognized for its...
Abstract The first effective organopolymerization of the biorenewable “non‐polymerizable” γ‐butyrolactone (γ‐BL) to a high‐molecular‐weight metal‐free recyclable polyester is reported. superbase tert ‐Bu‐P 4 found directly initiate this polymerization through deprotonation γ‐BL generate reactive enolate species. When combined with suitable alcohol, ‐based system rapidly converts into polyesters high monomer conversions (up 90 %), molecular weights ( M n up 26.7 kg mol −1 ), and complete...
This contribution presents a full account of experimental and theoretical/computational investigations into the N-heterocyclic carbene (NHC)-catalyzed proton-transfer polymerization (HTP) that converts common dimethacrylates (DMAs) containing no protic groups unsaturated polyesters. new HTP proceeds through step-growth propagation cycles via enamine intermediates, consisting proposed conjugate addition–proton transfer–NHC release fundamental steps. study examines monomer catalyst scopes as...