1
|
Krämer F. Aluminum in Frustrated Lewis Pair Chemistry. Angew Chem Int Ed Engl 2024; 63:e202405207. [PMID: 38826040 DOI: 10.1002/anie.202405207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/30/2024] [Accepted: 05/02/2024] [Indexed: 06/04/2024]
Abstract
This review article describes the development of the use of aluminum compounds in the chemistry of frustrated Lewis pairs (FLPs) over the last 14 years. It also discusses the synthesis, reactivity and catalytic applications of intermolecular, intramolecular and so-called hidden FLPs with phosphorus, nitrogen and carbon Lewis bases. The intrinsically higher acidity of aluminum compounds compared to their boron analogs opens up different reaction pathways. The results are presented in a more or less chronological order. It is shown that Al FLPs react with a variety of polar and non-polar substrates and form both stable adducts and reversibly activate bonds. Consequently, some catalytic applications of the title compounds were presented such as dimerization of alkynes, hydrogenation of tert-butyl ethylene and imines, C-F bond activation, reduction of CO2, dehydrogenation of amine borane and transfer of ammonia. In addition, various Al FLPs were used as initiators in polymerization reactions.
Collapse
Affiliation(s)
- Felix Krämer
- C1 Green Chemicals AG, Am Studio 2a, 12489, Berlin, Germany
| |
Collapse
|
2
|
Li C, Zhao W, He J, Zhang Y. Topology Controlled All-(Meth)acrylic Thermoplastic Elastomers by Multi-Functional Lewis Pairs-Mediated Polymerization. Angew Chem Int Ed Engl 2024; 63:e202401265. [PMID: 38390752 DOI: 10.1002/anie.202401265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
It remains challenging to synthesize all-(meth)acrylic triblock thermoplastic elastomers (TPEs), due to the drastically different reactivities between the acrylates and methacrylates and inevitable occurrence of side reactions during polymerization of acrylates. By taking advantage of the easy structural modulation features of N-heterocyclic olefins (NHOs), we design and synthesize strong nucleophilic tetraphenylethylene-based NHOs varying in the number (i.e. mono-, dual- and tetra-) of initiating functional groups. Its combination with bulky organoaluminum [iBuAl(BHT)2] (BHT=bis(2,6-di-tBu-4-methylphenoxy)) constructs Lewis pair (LP) to realize the living polymerization of both acrylates and methacrylates, furnishing polyacrylates with ultrahigh molecular weight (Mn up to 2174 kg ⋅ mol-1) within 4 min. Moreover, these NHO-based LPs enable us to not only realize the control over the polymers' topology (i.e. linear and star), but also achieve triblock star copolymers in one-step manner. Mechanical studies reveal that the star triblock TPEs exhibit better mechanical properties (elongation at break up to 1863 % and tensile strength up to 19.1 MPa) in comparison with the linear analogs. Moreover, the presence of tetraphenylethylene group in the NHOs entitled the triblock TPEs with excellent AIE properties in both solution and solid state.
Collapse
Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
- SINOPEC Beijing Research Institute of Chemical Industry, Beijing, China, 100013
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China, 130012
| |
Collapse
|
3
|
Rajendran NM, Lu Q, Bouffard J. A Facile Preparation of N-Heterocyclic Olefins: Ring-Opening Polymerization of β-Butyrolactone and Frustrated Lewis Pair Reactivity. Chemistry 2024; 30:e202303358. [PMID: 38109087 DOI: 10.1002/chem.202303358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Indexed: 12/19/2023]
Abstract
A direct synthesis of N-heterocyclic olefins (NHOs) and their mesoionic congeners (mNHOs) from N-heterocyclic carbenes and N-aziridinylimines is reported. The reaction provided diverse functionalized (m)NHOs and π-extended analogues. The prepared NHOs initiated the ring-opening polymerization of β-butyrolactone, and insertion of aldehyde and nitrile into an NHO-B(C6 F5 )3 adduct was demonstrated.
Collapse
Affiliation(s)
| | - Qi Lu
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| | - Jean Bouffard
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea
| |
Collapse
|
4
|
Buchard A, Davidson MG, Gobius du Sart G, Jones MD, Kociok-Köhn G, McCormick SN, Mckeown P. Coordination of ε-Caprolactone to a Cationic Niobium(V) Alkoxide Complex: Fundamental Insight into Ring-Opening Polymerization via Coordination-Insertion. Inorg Chem 2023; 62:15688-15699. [PMID: 37695575 PMCID: PMC10523432 DOI: 10.1021/acs.inorgchem.3c02491] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Indexed: 09/12/2023]
Abstract
We report three niobium-based initiators for the catalytic ring-opening polymerization (ROP) of ε-caprolactone, exhibiting good activity and molecular weight control. In particular, we have prepared on the gram-scale and fully characterized a monometallic cationic alkoxo-Nb(V) ε-caprolactone adduct representing, to the best of our knowledge, an unprecedented example of a metal complex with an intact lactone monomer and a functional ROP-initiating group simultaneously coordinated at the metal center. At 80 °C, all three systems initiate the immortal solution-state ROP of ε-caprolactone via a coordination-insertion mechanism, which has been confirmed through experimental studies, and is supported by computational data. Natural bond orbital calculations further indicate that polymerization may necessitate isomerization about the metal center between the alkoxide chain and the coordinated monomer. The observations made in this work are expected to inform mechanistic understanding both of amine tris(phenolate)-supported metal alkoxide ROP initiators, including various highly stereoselective systems for the polymerization of lactides and of coordination-insertion-type ROP protocols more broadly.
Collapse
Affiliation(s)
- Antoine Buchard
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, U.K.
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
| | - Matthew G. Davidson
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, U.K.
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
| | | | - Matthew D. Jones
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, U.K.
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
| | - Gabriele Kociok-Köhn
- Material
and Chemical Characterization and Analysis Facility (MC2), University of Bath, Bath BA2 7AY, U.K.
| | - Strachan N. McCormick
- Institute
for Sustainability, University of Bath, Bath BA2 7AY, U.K.
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
| | - Paul Mckeown
- Department
of Chemistry, University of Bath, Bath BA2 7AY, U.K.
| |
Collapse
|
5
|
G M, Sharma D, Dandela R, Dhayalan V. Synthetic Strategies of N-Heterocyclic Olefin (NHOs) and Their Recent Application of Organocatalytic Reactions and Beyond. Chemistry 2023:e202302106. [PMID: 37605950 DOI: 10.1002/chem.202302106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/23/2023]
Abstract
N-heterocyclic olefin (NHO) derivatives have an electron-rich as well as highly polarized carabon-carbon (C=C) double bond because of the electron-donating nature of nitrogen and sulphur atoms. While NHOs have been developing as novel organocatalysts and ligands for transition-metal complexes in various organic compound syntheses, different research groups are currently interested in preparing imidazole and triazolium-based chiral NHO catalysts. Some of them have been used for enantioselective organic transformations, but were still elusive. N-heterocyclic olefins, the alkylidene derivatives of N-heterocyclic carbenes (NHC), have shown promising results as effective promoters for numerous organic syntheses such as asymmetric catalysis, hydroborylation, hydrosilylation, reduction, CO2 sequestration, alkylation, cycloaddition, polymerization and the ring-opening reaction of aziridine and epoxides, esterification, C-F bond functionalization, amine coupling, trifluoromethyl thiolation, amination etc. NHOs catalysts with suitable structures can serve as a novel class of Lewis/Bronsted bases with strong basicity and high nucleophilicity properties.These facts strongly suggest their enormous chemical potential as sustainable catalysts for a wide variety of reactions in synthetic chemistry. The synthesis of NHOs and their properties are briefly reviewed in this article, along with a summary of the imidazole and triazole core of NHOs' most recent catalytic uses.
Collapse
Affiliation(s)
- Mahantesh G
- Department of Chemistry, National Institute of Technology Puducherry, Karaikal, 609609, Union Territory Puducherry, India
| | - Deepika Sharma
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian oil Odisha Campus, IIT, Kharagpur extension Centre Mouza Samantpuri, Bhubaneswar, 751013, Odisha, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian oil Odisha Campus, IIT, Kharagpur extension Centre Mouza Samantpuri, Bhubaneswar, 751013, Odisha, India
| | - Vasudevan Dhayalan
- Department of Chemistry, National Institute of Technology Puducherry, Karaikal, 609609, Union Territory Puducherry, India
| |
Collapse
|
6
|
Controlled Ring-opening (Co)Polymerization of Renewable Macrolactones by Al-based Catalysts with Different Sidearms. CHINESE JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1007/s10118-023-2947-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
|
7
|
Song Y, He J, Zhang Y, Gilsdorf RA, Chen EYX. Recyclable cyclic bio-based acrylic polymer via pairwise monomer enchainment by a trifunctional Lewis pair. Nat Chem 2023; 15:366-376. [PMID: 36443531 DOI: 10.1038/s41557-022-01097-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 10/19/2022] [Indexed: 11/30/2022]
Abstract
The existing catalyst/initiator systems and methodologies used for the synthesis of polymers can access only a few cyclic polymers composed entirely of a single monomer type, and the synthesis of such authentic cyclic polar vinyl polymers (acrylics) devoid of any foreign motifs remains a challenge. Here we report that a tethered B-P-B trifunctional, intramolecular frustrated Lewis pair catalyst enables the synthesis of an authentic cyclic acrylic polymer, cyclic poly(γ-methyl-α-methylene-γ-butyrolactone) (c-PMMBL), from the bio-based monomer MMBL. Detailed studies have revealed an initiation and propagation mechanism through pairwise monomer enchainment enabled by the cooperative and synergistic initiator/catalyst sites of the trifunctional catalyst. We propose that macrocyclic intermediates and transition states comprising two catalyst molecules are involved in the catalyst-regulated ring expansion and eventual cyclization, forming authentic c-PMMBL rings and concurrently regenerating the catalyst. The cyclic topology of the c-PMMBL polymers imparts an ~50 °C higher onset decomposition temperature and a much narrower degradation window compared with their linear counterparts of similar molecular weight and dispersity, while maintaining high chemical recyclability.
Collapse
Affiliation(s)
- Yanjiao Song
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, China.
| | - Reid A Gilsdorf
- Department of Chemistry, Colorado State University, Fort Collins, CO, USA
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, CO, USA
| |
Collapse
|
8
|
Yang H, Yao H, Feng K, Zhang G. Revisiting the structure of copolymer via anionic hybrid copolymerization of methyl methacrylate and ε-caprolactone. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
9
|
Ochs J, Pagnacco CA, Barroso-Bujans F. Macrocyclic polymers: Synthesis, purification, properties and applications. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Wang Q, Bai FY, Wang Y, Niu F, Zhang Y, Mi Q, Hu K, Pan X. Photoinduced Ion-Pair Inner-Sphere Electron Transfer-Reversible Addition-Fragmentation Chain Transfer Polymerization. J Am Chem Soc 2022; 144:19942-19952. [PMID: 36266241 DOI: 10.1021/jacs.2c08173] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Photoredox-mediated reversible deactivation radical polymerization (RDRP) is a promising method of precise synthesis of polymers with diverse structures and properties. However, its mechanism mainly based on the outer-sphere electron transfer (OSET) leads to stringent requirements for an efficient photocatalyst. In this paper, the zwitterionic organoboranes [L2B]+X- are prepared and applied in reversible addition-fragmentation chain transfer (RAFT) polymerization with the photoinduced ion-pair inner-sphere electron transfer (IP-ISET) mechanism. The ion-pair electron transfer mechanism and the formation of the radical [L2B]• are supported by electron paramagnetic resonance (EPR) radical capture experiments, 1H/11B NMR spectroscopy, spectroelectrochemical spectroscopy, transient absorption spectroscopy, theoretical calculation, and photoluminescence quenching experiments. Photoluminescence quenching experiments show that when [CTA]/[[L2B]+] ≥ 0.6, it is static quenching because of the in situ formation of [L2B]+[ZCS2]-, the real catalytic species. [L2B]+[C3H7SCS2]- is synthesized, and its photoluminescence lifetime is the same as the lifetime in the static quenching experiment, indicating the formation of [L2B]+[ZCS2]- in polymerization and the IP-ISET mechanism. The matrix-assisted laser desorption ionization time-of-flight mass (MALDI-TOF MS) spectra show that the structure of [C3H7SCS2] was incorporated into the polymer, indicating that ion-pair electron transfer occurs in catalytic species. The polymerization shows high catalytic activity at ppb catalyst loading, a wide range of monomers, excellent tolerance in the presence of 5 mol % phenolic inhibitors, and the synthesis of ultrahigh-molecular-weight polymers. This protocol with the IP-ISET mechanism exhibits a value in the development of new organic transformations and polymerization methods.
Collapse
Affiliation(s)
- Qianyi Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Feng-Yang Bai
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Yinling Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| | - Fushuang Niu
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Yifei Zhang
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, China
| | - Qixi Mi
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Ke Hu
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xiangcheng Pan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
| |
Collapse
|
11
|
Sun Y, Carpentier A, Zhang Y, Weng B, Ling Y, Maron L, Hong M. Stereospecific Polymerization of Bulky Methacrylates Using Organocatalyst in Strong Donating Solvent via Self-Controlled Mechanism. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yangyang Sun
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Ambre Carpentier
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Yixin Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Biwei Weng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yaoyao Ling
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Miao Hong
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
| |
Collapse
|
12
|
Glöckler E, Ghosh S, Schulz S. β-Diketiminate and β-Ketoiminate Metal Catalysts for Ring-Opening Polymerization of Cyclic Esters. POLYM REV 2022. [DOI: 10.1080/15583724.2022.2121837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Eduard Glöckler
- Institute for Inorganic Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Swarup Ghosh
- Institute for Inorganic Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Stephan Schulz
- Institute for Inorganic Chemistry, University of Duisburg-Essen, Essen, Germany
- Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Duisburg, Germany
| |
Collapse
|
13
|
Sun W, Lu K, Wang L, Hao Q, Liu J, Wang Y, Wu Z, Chen H. Introducing SuFEx click chemistry into aliphatic polycarbonates: a novel toolbox/platform for post-modification as biomaterials. J Mater Chem B 2022; 10:5203-5210. [PMID: 35734968 DOI: 10.1039/d2tb01052f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a biodegradable and biocompatible biomaterial, aliphatic polycarbonates (APCs) have attracted substantial attention in terms of post-polymerization modification (PPM) for functionalization. A strategy for the introduction of sulfur(VI)-fluoride exchange (SuFEx) click chemistry into APCs for PPM is proposed for the first time in this work. 4'-(Fluorosulfonyl)benzyl 5-methyl-2-oxo-1,3-dioxane-5-carboxylate (FMC) was designed as a SuFEx clickable cyclic carbonate for APCs via ring-opening polymerization (ROP), and an operational and nontoxic synthetic route was achieved. FMC managed to undergo both ROP and PPM through the SuFEx click chemistry organocatalytically without constraining or antagonizing each other, using 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) as a co-organocatalyst here. Its ROP was systematically investigated, and density functional theory (DFT) calculations were performed to understand the acid-base catalytic mechanism in the anionic ROP. Exploratory investigations into PPM by SuFEx of poly(FMC) were conducted as biomaterials, and the one-pot strategies to achieve both ROP and SuFEx were confirmed.
Collapse
Affiliation(s)
- Wei Sun
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Kunyan Lu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Ling Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Qing Hao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Jingrui Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Yong Wang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Zhaoqiang Wu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| | - Hong Chen
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
| |
Collapse
|
14
|
Li C, Zhao W, He J, Zhang Y, Zhang W. Single‐Step Expeditious Synthesis of Diblock Copolymers with Different Morphologies by Lewis Pair Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2022; 61:e202202448. [DOI: 10.1002/anie.202202448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education Institute of Polymer Chemistry College of Chemistry Nankai University Tianjin 300071 China
| |
Collapse
|
15
|
Ji H, Wang B, Pan L, Liu X, Li Y. A green synthetic toolbox from organocatalytic alternating copolymerization of renewable epoxides and dihydrocoumarin. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- He‐Yuan Ji
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering Tianjin University Tianjin China
| | - Bin Wang
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering Tianjin University Tianjin China
| | - Li Pan
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering Tianjin University Tianjin China
| | - Xiao‐Hui Liu
- School of Materials Science and Engineering Tiangong University Tianjin China
| | - Yue‐Sheng Li
- Tianjin Key Lab of Composite & Functional Materials, School of Materials Science and Engineering Tianjin University Tianjin China
| |
Collapse
|
16
|
Li C, Zhao W, He J, Zhang Y, Zhang W. Single‐Step Expeditious Synthesis of Diblock Copolymers with Different Morphologies by Lewis Pair Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials. College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Wangqing Zhang
- Key Laboratory of Functional Polymer Materials of the Ministry of Education Institute of Polymer Chemistry College of Chemistry Nankai University Tianjin 300071 China
| |
Collapse
|
17
|
Chia CC, Li Y, Xiao L, Yang MC, Su MD, So CW. Lewis Pair Polymerization of Alkyl Methacrylate by Amidinato Silicon Compounds and Tris(pentafluorophenyl)borane. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cher-Chiek Chia
- Nanyang Technological University School of Physical and Mathematical sciences SINGAPORE
| | - Yan Li
- Hangzhou Normal University Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education CHINA
| | | | - Ming-Chung Yang
- National Chiayi University Department of Applied Chemistry TAIWAN
| | - Ming-Der Su
- National Chiayi University Department of Applied Chemistry TAIWAN
| | - Cheuk-Wai So
- Nanyang Technological University Division of Chemistry and Biological Chemistry 21 Nanyang Link 637371 Singapore SINGAPORE
| |
Collapse
|
18
|
Dong X, Robinson JR. The versatile roles of neutral donor ligands in tuning catalyst performance for the ring-opening polymerization of cyclic esters. NEW J CHEM 2022. [DOI: 10.1039/d1nj02694a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of neutral donor ligands is an effective strategy to modify catalyst structure and performance in the synthesis of sustainable polymers through the ring-opening polymerization (ROP) of cyclic esters.
Collapse
Affiliation(s)
- Xiang Dong
- Department of Chemistry, Brown University, 324 Brook St. Providence, RI 02912, USA
| | - Jerome R. Robinson
- Department of Chemistry, Brown University, 324 Brook St. Providence, RI 02912, USA
| |
Collapse
|
19
|
Liu M, Wang B, Li P, Liu X, Li Y. Sequentially bridging anionic addition and ring-opening polymerization by cooperative organocatalysis: Well-defined block copolymers from methacrylates and cyclic esters. Polym Chem 2022. [DOI: 10.1039/d2py00339b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalytic sequential block copolymerization of dissimilar monomers with distinct chemical characteristics is great challenging, usually involving the integration of different polymerization mechanism. In this contribution, we reported the synthesis of...
Collapse
|
20
|
Zhao W, Li F, Li C, He J, Zhang Y, Chen C. Lewis Pair Catalyzed Regioselective Polymerization of (E,E)-Alkyl Sorbates for the Synthesis of (AB) n Sequenced Polymers. Angew Chem Int Ed Engl 2021; 60:24306-24311. [PMID: 34510679 DOI: 10.1002/anie.202111336] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Indexed: 01/17/2023]
Abstract
In this contribution, Lewis pairs (LPs) composed of N-heterocyclic olefins (NHOs) with different steric hindrance and nucleophilicity as Lewis bases (LBs) and Al-based compounds with comparable acidity but different steric hindrance as Lewis acids (LAs) were applied for 1,4-selective polymerization of (E,E)-methyl sorbate (MS) and (E,E)-ethyl sorbate (ES). The effects of steric hindrance, electron-donating ability, and acidity of LPs on MS and ES polymerization were systematically investigated. High catalytic activity and high initiation efficiency can be achieved, leading to the formation of PMS with 100 % 1,4-selectivity, tunable molecular weight (Mw up to 333 kg mol-1 ), and narrow molecular weight distribution (MWD). Block copolymerization of ES and methyl methacrylate (MMA) was also realized. Meanwhile, this system can be applied to other homologous conjugated diene substrates. Furthermore, simple chemical reactions can efficiently convert PMS to different polymers with strict (AB)n sequence structures, such as poly(sorbic acid), poly(propylene-alt-methyl acrylate), poly(propylene-alt-acrylic acid), poly(propylene-alt-allyl alcohol), and poly(ethylene-alt-2-butylene).
Collapse
Affiliation(s)
- Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China
| | - Fukuan Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China
| | - Chengkai Li
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, P. R. China
| |
Collapse
|
21
|
Yin L, Liu L, Zhang N. Brush-like polymers: design, synthesis and applications. Chem Commun (Camb) 2021; 57:10484-10499. [PMID: 34550120 DOI: 10.1039/d1cc03940g] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the development of controlled polymerisation, almost all polymerisation strategies have been successfully transplanted to surface-initiated polymerisation. The resulting polymer brushes have emerged as an effective tool for surface functionalization and modulation of the surface properties of materials. To meet various demands it is possible to tailor a material surface with polymer brushes that have diverse dimensionalities, morphologies and compositions. The crowded environment within polymer brushes as well as the stretched conformation of polymer chains sometimes provide unique physicochemical properties, which lead to the delicate creation of inorganic-organic hybridised nanostructures, anti-fouling coatings, biomedical carriers, and materials for use in lubrication, photonics and energy storage. So far, challenges remain in the high-precision synthesis and topological control needed to realize extended applications of polymer brushes. In this Feature Article, we highlight the topology, potential application prospects and various synthetic protocols, particularly for recently established methods, for the efficient synthesis of polymer brushes, as well as their benefits and limitations.
Collapse
Affiliation(s)
- Liying Yin
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
| | - Lin Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
| | - Ning Zhang
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China.
| |
Collapse
|
22
|
Zhao W, Li F, Li C, He J, Zhang Y, Chen C. Lewis Pair Catalyzed Regioselective Polymerization of (
E
,
E
)‐Alkyl Sorbates for the Synthesis of (AB)
n
Sequenced Polymers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111336] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University, Changchun Jilin 130012 P. R. China
| | - Fukuan Li
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University, Changchun Jilin 130012 P. R. China
| | - Chengkai Li
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University, Changchun Jilin 130012 P. R. China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University, Changchun Jilin 130012 P. R. China
| | - Changle Chen
- CAS Key Laboratory of Soft Matter Chemistry Hefei National Laboratory for Physical Sciences at the Microscale Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
| |
Collapse
|
23
|
Kosuru SR, Lai FJ, Chang YL, Li CY, Lai YC, Ding S, Wu KH, Chen HY, Lo YH. Collaboration between Trinuclear Aluminum Complexes Bearing Bipyrazoles in the Ring-Opening Polymerization of ε-Caprolactone. Inorg Chem 2021; 60:10535-10549. [PMID: 34232620 DOI: 10.1021/acs.inorgchem.1c01192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trinuclear aluminum complexes bearing bipyrazoles were synthesized, and their catalytic activity for ε-caprolactone (CL) polymerization was investigated. DBu2Al3Me5 exhibited higher catalytic activity than did the dinuclear aluminum complex LBu2Al2Me4 (16 times as high for CL polymerization; [CL]:[DBu2Al3Me5]:[BnOH] = 100:0.5:5, [DBu2Al3Me5] = 10 mM, conversion 93% after 18 min at room temperature). Density functional theory calculations revealed a polymerization mechanism in which CL first approached the central Al atom and then moved to an external Al. The coordinated CL ring was opened because the repulsion of two tert-butyl groups on the ligands pushed an alkoxide initiator on an external Al to initiate CL. In these trinuclear Al catalysts, the central Al plays a role in monomer capture and then collaborates with the external Al to activate CL, accelerating polymerization.
Collapse
Affiliation(s)
- Someswara Rao Kosuru
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Feng-Jie Lai
- Department of Dermatology, Chi Mei Medical Center, Tainan, Taiwan, Republic of China.,Center for General Education, Southern Taiwan University of Science and Technology, Tainan, Taiwan, Republic of China
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Chen-Yu Li
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Yi-Chun Lai
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China
| | - Shangwu Ding
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.,Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, Republic of China
| | - Kuo-Hui Wu
- Department of Chemistry, National Central University, Taoyuan 32001, Taiwan, Republic of China
| | - Hsuan-Ying Chen
- Department of Medicinal and Applied Chemistry, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, Republic of China.,Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, Republic of China.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, Republic of China
| | - Yung-Han Lo
- Department of Chemistry, Faculty of Science and Technology, Keio University, Minato City 108-8345, Tokyo, Japan
| |
Collapse
|
24
|
Liu Y, Wu J, Hu X, Zhu N, Guo K. Advances, Challenges, and Opportunities of Poly(γ-butyrolactone)-Based Recyclable Polymers. ACS Macro Lett 2021; 10:284-296. [PMID: 35570792 DOI: 10.1021/acsmacrolett.0c00813] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The discovery and prosperous growth of synthetic polymers have presented both significant advantages and daunting challenges in the last century. To address the issues of environmental pollution and fossil consumption, recyclable, degradable, and/or biobased polymers have been given much attention in the polymer science community. This viewpoint focuses on the emerging fully chemical recyclable poly(γ-butyrolactone)-based polymers. The breakthrough from nonpolymerizable to efficient polymerization is highlighted by the benefits of the development of a series of catalysis for ring-opening polymerization of γ-butyrolactone. Subsequently, the design of γ-butyrolactone derivatives and synthesis of more recyclable polymers are summarized together with the discussions about the structure and property relationship. Finally, the remaining challenges and promising opportunities are suggested in order to provide insights into the further direction for sustainable polymers.
Collapse
Affiliation(s)
- Yihuan Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
| | - Jiaqi Wu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
| | - Xin Hu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
| | - Ning Zhu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 211800, China
| |
Collapse
|
25
|
Chen CM, Xu X, Ji HY, Wang B, Pan L, Luo Y, Li YS. Alkali Metal Carboxylates: Simple and Versatile Initiators for Ring-Opening Alternating Copolymerization of Cyclic Anhydrides/Epoxides. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02389] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Chong-Min Chen
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Xiaowei Xu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - He-Yuan Ji
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Bin Wang
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Li Pan
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yi Luo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
| | - Yue-Sheng Li
- Tianjin Key Laboratory of Composite & Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
| |
Collapse
|
26
|
Diaz C, Mehrkhodavandi P. Strategies for the synthesis of block copolymers with biodegradable polyester segments. Polym Chem 2021. [DOI: 10.1039/d0py01534b] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Oxygenated block copolymers with biodegradable polyester segments can be prepared in one-pot through sequential or simultaneous addition of monomers. This review highlights the state of the art in this area.
Collapse
Affiliation(s)
- Carlos Diaz
- University of British Columbia
- Department of Chemistry
- Vancouver
- Canada
| | | |
Collapse
|
27
|
Zhou L, Wang Z, Xu G, Lv C, Wang Q. Structure and activity relationship studies of N-heterocyclic olefin and thiourea/urea catalytic systems: application in ring-opening polymerization of lactones. Polym Chem 2021. [DOI: 10.1039/d0py01747g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structure–activity relationship studies of N-heterocyclic olefin and thiourea/urea catalytic systems were performed and applied to ROP of lactones.
Collapse
Affiliation(s)
- Li Zhou
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Zhenyu Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Guangqiang Xu
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Chengdong Lv
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| | - Qinggang Wang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao
- China
| |
Collapse
|
28
|
Abdur RM, Mousavi B, Shahadat HM, Akther N, Luo Z, Zhuiykov S, Verpoort F. Ring-opening copolymerization of ε-caprolactone and δ-valerolactone by a titanium-based metal–organic framework. NEW J CHEM 2021. [DOI: 10.1039/d1nj01946e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Copolymerization of ε-caprolactone and δ-valerolactone without any co-catalyst in a solvent-free medium under eco-friendly conditions using earth abundant Ti-metal based MOF, MIL-125.
Collapse
Affiliation(s)
- Rahaman M. Abdur
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Bibimaryam Mousavi
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Hossain M. Shahadat
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Nishat Akther
- Department of Biochemistry and Molecular Biology
- Mawlana Bhashani Science and Technology University
- Tangail 1902
- Bangladesh
| | - Zhixiong Luo
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| | - Serge Zhuiykov
- Center for Environmental and Energy Research (CEER)
- Ghent University Global Campus
- Yeonsu-Gu
- South Korea
| | - Francis Verpoort
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
| |
Collapse
|
29
|
Bai Y, Wang H, He J, Zhang Y. Living polymerization of naturally renewable butyrolactone-based vinylidenes mediated by a frustrated Lewis pair. Polym Chem 2021. [DOI: 10.1039/d1py00924a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The frustrated Lewis pair composed of an organophosphorus(iii) superbase and a bulky organoaluminum Lewis acid promoted the living/controlled polymerization of naturally renewable butyrolactone-based vinylidenes.
Collapse
Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| |
Collapse
|
30
|
Ge F, Li S, Wang Z, Zhang W, Wang X. Controlled and efficient polymerization of methyl methacrylate catalyzed by pyridinylidenaminophosphine based Lewis pairs. Polym Chem 2021. [DOI: 10.1039/d1py00579k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Developing different synthetic approaches to realize controlled or living polymerization is of great interest to polymer chemists to obtain polymers with defined molecular weight, narrow molecular weight distribution and unambiguous structures.
Collapse
Affiliation(s)
- Fang Ge
- College of Chemistry and Chemical Engineering
- 266071
- Qingdao University
- Qingdao
- China
| | - Sun Li
- Chinese–German Faculty for Engineering
- 266426
- Qingdao University of Science and Technology
- Qingdao
- China
| | - Zhe Wang
- Chinese–German Faculty for Engineering
- 266426
- Qingdao University of Science and Technology
- Qingdao
- China
| | | | - Xiaowu Wang
- Chinese–German Faculty for Engineering
- 266426
- Qingdao University of Science and Technology
- Qingdao
- China
| |
Collapse
|
31
|
Udomsasporn K, Haesuwannakij S, Piromjitpong P, Chumsaeng P, Phomphrai K. Comparative bindings of lactones, lactide, and cyclic carbonates: experimental insights into the coordination step of polymerization. Dalton Trans 2020; 49:14378-14382. [PMID: 33047754 DOI: 10.1039/d0dt03323e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Comparative bindings of several renowned monomers were investigated experimentally using B(C6F5)3 as a Lewis acid model for the coordination step in ring-opening polymerization. A complete series of the X-ray crystal structures of the B(C6F5)3 adducts with the monomers was reported. The X-ray structural studies and spectroscopic data revealed a coordination strength in the order lactones > tetrahydrofuran > cyclic carbonates > lactide.
Collapse
Affiliation(s)
- Kwanchanok Udomsasporn
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
| | - Setsiri Haesuwannakij
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
| | - Parichat Piromjitpong
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
| | - Phongnarin Chumsaeng
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand.
| | - Khamphee Phomphrai
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Wangchan, Rayong 21210, Thailand. and Research Network of NANOTEC-VISTEC on Nanotechnology for Energy, Vidyasirimedhi Institute of Science and Technology, Wangchan, Rayong 21210, Thailand
| |
Collapse
|
32
|
Zhou L, Wang Z, Xu G, Yang R, Yan H, Hao XQ, Wang Q. N-heterocyclic olefins catalyzed ring-opening polymerization of N-tosyl aziridines. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.110046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
33
|
Gulia N, Pigulski B, Szafert S. Base‐Promoted Double Amination of 1‐Haloalkynes: Direct Synthesis of Ene‐1,1‐diamines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nurbey Gulia
- Faculty of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Bartłomiej Pigulski
- Faculty of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| | - Sławomir Szafert
- Faculty of Chemistry University of Wrocław 14 F. Joliot‐Curie 50‐383 Wrocław Poland
| |
Collapse
|
34
|
Czifrák K, Lakatos C, Árpád Kordován M, Nagy L, Daróczi L, Zsuga M, Kéki S. Block Copolymers of Poly(ω-Pentadecalactone) in Segmented Polyurethanes: Novel Biodegradable Shape Memory Polyurethanes. Polymers (Basel) 2020; 12:polym12091928. [PMID: 32859018 PMCID: PMC7563291 DOI: 10.3390/polym12091928] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/21/2020] [Accepted: 08/22/2020] [Indexed: 11/18/2022] Open
Abstract
In this report, the synthesis of poly(ω-pentadecalactone) (PPDL) (co)polymers and their incorporation into polyurethanes (PUs) are reported. Optimal conditions for the ring-opening polymerization (ROP) of ω-pentadecalactone (PDL) using dibutyltin dilaurate catalyst were established. For the synthesis of linear and crosslinked PUs, 50 kDa poly(ε-caprolactone) (PCL) and 1,6-hexamethylenediisocyanate (HDI) were used. The obtained polyurethanes were characterized by Attenuated Total Reflectance Fourier-Transform Infrared spectroscopy (AT-FTIR), differential scanning calorimetry (DSC), and dynamical mechanical analysis (DMA). The DMA of the selected sample showed a rubbery plateau on the storage modulus versus temperature curve predicting shape memory behavior. Indeed, good shape memory performances were obtained with shape fixity (Rf) and shape recovery (Rr) ratios.
Collapse
Affiliation(s)
- Katalin Czifrák
- Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (K.C.); (C.L.); (M.Á.K.); (L.N.); (M.Z.)
| | - Csilla Lakatos
- Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (K.C.); (C.L.); (M.Á.K.); (L.N.); (M.Z.)
| | - Marcell Árpád Kordován
- Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (K.C.); (C.L.); (M.Á.K.); (L.N.); (M.Z.)
| | - Lajos Nagy
- Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (K.C.); (C.L.); (M.Á.K.); (L.N.); (M.Z.)
| | - Lajos Daróczi
- Department of Solid State Physics, University of Debrecen, Bem tér 18/b, H-4026 Debrecen, Hungary;
| | - Miklós Zsuga
- Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (K.C.); (C.L.); (M.Á.K.); (L.N.); (M.Z.)
| | - Sándor Kéki
- Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (K.C.); (C.L.); (M.Á.K.); (L.N.); (M.Z.)
- Correspondence: ; Tel.: +36-52-512-900 (ext. 22455)
| |
Collapse
|
35
|
Affiliation(s)
- Michael L. McGraw
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Eugene Y.-X. Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| |
Collapse
|
36
|
Liénard R, De Winter J, Coulembier O. Cyclic polymers: Advances in their synthesis, properties, and biomedical applications. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200236] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Romain Liénard
- Laboratory of Polymeric and Composite Materials (LPCM) Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons Mons Belgium
- Organic Synthesis and Mass Spectrometry Laboratory (S2MOs) Interdisciplinary Center for Mass Spectrometry (CISMa), University of Mons Mons Belgium
| | - Julien De Winter
- Organic Synthesis and Mass Spectrometry Laboratory (S2MOs) Interdisciplinary Center for Mass Spectrometry (CISMa), University of Mons Mons Belgium
| | - Olivier Coulembier
- Laboratory of Polymeric and Composite Materials (LPCM) Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons Mons Belgium
| |
Collapse
|
37
|
von Seggern N, Schindler T, Naumann S. Dual Catalytic Ring-Opening Polymerization of Ethylene Carbonate for the Preparation of Degradable PEG. Biomacromolecules 2020; 21:2661-2669. [DOI: 10.1021/acs.biomac.0c00360] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Nils von Seggern
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Tamara Schindler
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Stefan Naumann
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| |
Collapse
|
38
|
Bai Y, Wang H, He J, Zhang Y. Rapid and Scalable Access to Sequence‐Controlled DHDM Multiblock Copolymers by FLP Polymerization. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun Jilin 130012 China
| |
Collapse
|
39
|
Bai Y, Wang H, He J, Zhang Y. Rapid and Scalable Access to Sequence-Controlled DHDM Multiblock Copolymers by FLP Polymerization. Angew Chem Int Ed Engl 2020; 59:11613-11619. [PMID: 32237265 DOI: 10.1002/anie.202004013] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 03/26/2020] [Indexed: 12/25/2022]
Abstract
An immortal N-(diphenylphosphanyl)-1,3-diisopropyl-4,5-dimethyl-1,3-dihydro-2H-imidazol-2-imine/diisobutyl (2,6-di-tert-butyl-4-methylphenoxy) aluminum (P(NIi Pr)Ph2 /(BHT)Ali Bu2 )-based frustrated Lewis pair (FLP) polymerization strategy is presented for rapid and scalable synthesis of the sequence-controlled multiblock copolymers at room temperature. Without addition of extra initiator or catalyst and complex synthetic procedure, this method enabled a tripentacontablock copolymer (n=53, k=4, dpn =50) to be achieved with the highest reported block number (n=53) and molecular weight (Mn =310 kg mol-1 ) within 30 min. More importantly, this FLP polymerization strategy provided access to the multiblock copolymers with tailored properties by precisely adjusting the monomer sequence and block numbers.
Collapse
Affiliation(s)
- Yun Bai
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Huaiyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| |
Collapse
|
40
|
Wang X, Hong M. Precise Control of Molecular Weight and Stereospecificity in Lewis Pair Polymerization of Semifluorinated Methacrylates: Mechanistic Studies and Stereocomplex Formation. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00553] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xing Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Miao Hong
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| |
Collapse
|
41
|
Ghosh S, Glöckler E, Wölper C, Tjaberings A, Gröschel AH, Schulz S. Heteroleptic β-Ketoiminate Magnesium Catalysts for the Ring-Opening Polymerization of Lactide. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00168] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Swarup Ghosh
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| | - Eduard Glöckler
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| | - Christoph Wölper
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| | - Alexander Tjaberings
- Faculty of Chemistry, University of Münster and Center for Soft Nanoscience (SoN), Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - André H. Gröschel
- Faculty of Chemistry, University of Münster and Center for Soft Nanoscience (SoN), Busso-Peus-Strasse 10, 48149 Münster, Germany
| | - Stephan Schulz
- Faculty of Chemistry, University of Duisburg-Essen and Center for Nanointegration Duisburg-Essen (CENIDE), Universitätsstraße 7, S07 S03 C30, 45141 Essen, Germany
| |
Collapse
|
42
|
McGraw ML, Clarke RW, Chen EYX. Compounded Sequence Control in Polymerization of One-Pot Mixtures of Highly Reactive Acrylates by Differentiating Lewis Pairs. J Am Chem Soc 2020; 142:5969-5973. [PMID: 32167755 DOI: 10.1021/jacs.0c01127] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The ability to synthesize well-defined block copolymers (BCPs) from one-pot comonomer mixtures has powerful chemical and practical implications. However, controlling sequences between highly reactive, homologous comonomers such as acrylates during polymerization is challenging. Here we present a Lewis pair polymerization strategy that uniquely utilizes preferential Lewis acid coordination to differentiate between comonomers, distinctive kinetics, and compounded thermodynamic and kinetic differentiation to precisely control sequences and suppress tapering and misincorporation errors, thus achieving well-defined and resolved di- or tri-BCPs of acrylates.
Collapse
Affiliation(s)
- Michael L McGraw
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Ryan W Clarke
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Eugene Y-X Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| |
Collapse
|
43
|
Clarke RW, McGraw ML, Gowda RR, Chen EYX. Lewis Pair Polymerization of Renewable Indenone to Erythro-Ditactic High-Tg Polymers with an Upcycling Avenue. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02285] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ryan W. Clarke
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Michael L. McGraw
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Ravikumar R. Gowda
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| | - Eugene Y.-X. Chen
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, United States
| |
Collapse
|
44
|
Yan C, Liu ZX, Xu TQ. Regioselective, stereoselective, and living polymerization of divinyl pyridine monomers using rare earth catalysts. Polym Chem 2020. [DOI: 10.1039/c9py01852b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The first regioselective, stereoselective, and living polymerization of divinyl pyridine monomers, mediated by simple rare earth catalysts, is reported.
Collapse
Affiliation(s)
- Chao Yan
- Department of Chemistry
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Zhao-Xuan Liu
- Department of Chemistry
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Tie-Qi Xu
- Department of Chemistry
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
- P. R. China
| |
Collapse
|
45
|
Wang Y, Han Y, Zhang L. Binary catalytic system for homo- and block copolymerization of ε-caprolactone with δ-valerolactone. RSC Adv 2020; 10:25979-25987. [PMID: 35518598 PMCID: PMC9055323 DOI: 10.1039/d0ra04974c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 06/30/2020] [Indexed: 12/28/2022] Open
Abstract
The combined interaction of 2,3,6,7-tetrahydro-5H-thiazolo[3,2-a] pyrimidine (ITU) as the organocatalytic nucleophile with YCl3 as Lewis acid cocatalyst, generating ITU/YCl3, was employed for homo- and copolymerization of CL with VL.
Collapse
Affiliation(s)
- Yan Wang
- The Center of Analysis and Test
- Shanxi Normal University
- Linfen 041004
- P. R. China
| | - Yongle Han
- School of Chemistry & Material Science
- Shanxi Normal University
- Linfen 041004
- P. R. China
| | - Lifang Zhang
- The Center of Analysis and Test
- Shanxi Normal University
- Linfen 041004
- P. R. China
- School of Chemistry & Material Science
| |
Collapse
|
46
|
Zhao W, He J, Zhang Y. Lewis pairs polymerization of polar vinyl monomers. Sci Bull (Beijing) 2019; 64:1830-1840. [PMID: 36659579 DOI: 10.1016/j.scib.2019.08.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/18/2019] [Accepted: 08/21/2019] [Indexed: 01/21/2023]
Abstract
The globally increasing demands for polymer materials stimulate the significantly intense attention focused on the Lewis pair polymerization (LPP) of various polar vinyl monomers catalyzed by Lewis pairs (LPs) composed of Lewis acid (LA) and Lewis base (LB). According to the degree of interaction between LA and LB, LPs could be divided into classical Lewis adduct (CLA), interacting Lewis pair (ILP) and frustrated Lewis pair (FLP). Regulation of the Lewis basicity, Lewis acidity, and steric effects of these LPs has a significant impact on the polymer chain initiation, propagation and termination as well as chain transfer reaction during polymerization. Compared with other polymerization strategies, LPP has shown several unique advantages towards the polymerization of polar vinyl monomers such as high activity, control or livingness, mild conditions, and complete chemo- or regioselectivity. We will comprehensively review the recent advances achieved in the LPP of polar vinyl monomers according to the classification of the employed LPs based on different LAs, by highlighting the key polymerization results, polymerization mechanisms as well as the currently unmet challenges and the future research directions of LPP chemistry.
Collapse
Affiliation(s)
- Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
| |
Collapse
|
47
|
Li C, Zhao W, He J, Zhang Y. Highly efficient cyclotrimerization of isocyanates using N-heterocyclic olefins under bulk conditions. Chem Commun (Camb) 2019; 55:12563-12566. [PMID: 31577293 DOI: 10.1039/c9cc06402h] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
With a catalyst loading as low as 0.005%, high to excellent yields of isocyanurates could be achieved from N-heterocyclic olefin mediated organocatalytic cyclotrimerization of a wide range of isocyanates under bulk conditions. Experimental details coupled with structural characterization of the key intermediates led to comprehensive mechanistic studies of cyclotrimerization.
Collapse
Affiliation(s)
- Chengkai Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China.
| | - Wuchao Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China.
| | - Jianghua He
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China.
| | - Yuetao Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China.
| |
Collapse
|
48
|
Naumann S. Synthesis, properties & applications of N-heterocyclic olefins in catalysis. Chem Commun (Camb) 2019; 55:11658-11670. [PMID: 31517349 DOI: 10.1039/c9cc06316a] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Heterocyclic olefins (NHOs), a recently (re-)discovered type of electron-rich, polar alkene, are comprehensively presented. Along with synthetic aspects and chemical properties, special emphasis is put on the multi-faceted impact NHOs already have had on catalysis. This is discussed along the lines of small molecule organocatalysis, organo- and metal-assisted polymerization and of the understanding and application of NHO-ligated organometallic complexes. Highlighted are the strong basicity of NHOs ("superbases"), their high nucleophilicity and the design principles to tailor NHO (organo-)catalysts. It is demonstrated that NHOs can complement, and in many cases out-perform, the much better established N-heterocyclic carbene-based systems. Examples include among others CO2-sequestration, the polymerization of lactones and epoxides or the transfer hydrogenation of carbonyls. Further, the unique ability to selectively address basic or nucleophilic reaction pathways via NHO-mediation is detailed, as is the bonding situation in NHO-metal complexes and the ability of the olefin to act as an electronically flexible ligand.
Collapse
Affiliation(s)
- Stefan Naumann
- University of Stuttgart, Institute of Polymer Chemistry, 70569 Stuttgart, Germany.
| |
Collapse
|
49
|
Walther P, Krauß A, Naumann S. Lewis Pair Polymerization of Epoxides via Zwitterionic Species as a Route to High-Molar-Mass Polyethers. Angew Chem Int Ed Engl 2019; 58:10737-10741. [PMID: 31099454 DOI: 10.1002/anie.201904806] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Indexed: 11/08/2022]
Abstract
A dual catalytic setup based on N-heterocyclic olefins (NHOs) and magnesium bis(hexamethyldisilazide) (Mg(HMDS)2 ) was used to prepare poly(propylene oxide) with a molar mass (Mn ) >500 000 g mol-1 , in some cases even >106 g mol-1 , as determined by GPC/light scattering. This is achieved by combining the rapid polymerization characteristics of a zwitterionic, Lewis pair type mechanism with the efficient epoxide activation by the MgII species. Transfer-to-monomer, traditionally frustrating attempts at synthesizing polyethers with a high degree of polymerization, is practically removed as a limiting factor by this approach. NMR and MALDI-ToF MS experiments reveal key aspects of the proposed mechanism, whereby the polymerization is initiated via nucleophilic attack by the NHO on the activated monomer, generating a zwitterionic species. This strategy can also be extended to other epoxides, including functionalized monomers.
Collapse
Affiliation(s)
- Patrick Walther
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Annabelle Krauß
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Stefan Naumann
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| |
Collapse
|
50
|
Walther P, Krauß A, Naumann S. Darstellung von hochmolekularen Polyethern durch die zwitterionische Lewis‐Paar‐Polymerisation von Epoxiden. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904806] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Patrick Walther
- Institut für PolymerchemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Annabelle Krauß
- Institut für PolymerchemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| | - Stefan Naumann
- Institut für PolymerchemieUniversität Stuttgart Pfaffenwaldring 55 70569 Stuttgart Deutschland
| |
Collapse
|