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Wang J, Tian T, Zhang R, Li M, Chen J, Qin A, Tang BZ. Efficient Conversion of Inert Nitriles to Multifunctional Poly(5-amino-1,2,3-triazole)s via Regioselective Click Polymerization with Azide Monomers under Ambient Conditions. J Am Chem Soc 2024; 146:6652-6664. [PMID: 38419303 DOI: 10.1021/jacs.3c12588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Nitrile compounds are abundant, stable, cheap, and readily available natural and chemical industrial sources. However, the efficient conversion of nitrile monomers to functional polymers is mostly limited due to their inert reactivity, and developing efficient polymerizations based on nitrile monomers under very mild conditions is still a big challenge. In this work, a facile and powerful base-catalyzed acetonitrile-azide click polymerization was successfully established under ambient conditions. This polymerization also enjoys the merits of short reaction time (15 min), 100% atom economy, transition-metal-free catalyst system, and regioselectivity. A series of poly(5-amino-1,2,3-triazole)s (PATAs) with high weight-average molecular weights (Mw, up to 204,000) were produced in excellent yields (up to 99%). The PATAs containing tetraphenylethene (TPE) moieties exhibit unique aggregation-induced emission (AIE) characteristics, which could be used to sensitively detect Fe(III) ions with a low limit of detection (1.205 × 10-7 M) and to specifically image lysosomes of living cells. Notably, PATAs could be facilely post-modified due to their containing primary amino groups in the polymer chains even through a one-pot tandem reaction. Thus, this work not only establishes a new powerful click polymerization to convert stable nitriles but also generates a series of PATAs with versatile properties for diverse applications.
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Affiliation(s)
- Jia Wang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
- Songshan Lake Materials Laboratory, Dongguan 523808, China
| | - Tian Tian
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Rongyuan Zhang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong (CUHK), Shenzhen, Guangdong 518172, China
| | - Mingzhao Li
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Jie Chen
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
| | - Ben Zhong Tang
- Center for Aggregation-Induced Emission, South China University of Technology, Guangzhou 510640, China
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong (CUHK), Shenzhen, Guangdong 518172, China
- Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Kowloon, Hong Kong 999077, China
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Aliphatic Polybenzimidazoles: Synthesis, Characterization and High-Temperature Shape-Memory Performance. Polymers (Basel) 2023; 15:polym15061399. [PMID: 36987180 PMCID: PMC10055794 DOI: 10.3390/polym15061399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 02/23/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
A series of aliphatic polybenzimidazoles (PBIs) with methylene groups of varying length were synthesized by the high-temperature polycondensation of 3,3′-diaminobenzidine (DAB) and the corresponding aliphatic dicarboxylic acid in Eaton’s reagent. The influence of the length of the methylene chain on PBIs’ properties was investigated by solution viscometry, thermogravimetric analysis, mechanical testing and dynamic mechanical analysis. All PBIs exhibited high mechanical strength (up to 129.3 ± 7.1 MPa), glass transition temperature (≥200 °C) and thermal decomposition temperature (≥460 °C). Moreover, all of the synthesized aliphatic PBIs possess a shape-memory effect, which is a result of the presence of soft aliphatic segments and rigid bis-benzimidazole groups in the macromolecules, as well as strong intermolecular hydrogen bonds that serve as non-covalent crosslinks. Among the studied polymers, the PBI based on DAB and dodecanedioic acid has high adequate mechanical and thermal properties and demonstrates the highest shape-fixity ratio and shape-recovery ratio of 99.6% and 95.6%, respectively. Because of these properties, aliphatic PBIs have great potential to be used as high-temperature materials for application in different high-tech fields, including the aerospace industry and structural component industries.
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Agner T, Zimermann A, Machado F, Neto BAD, de Araújo PHH, Sayer C. Polymerization of
N
‐Butyl Vinyl Ether Catalyzed by Iron‐Containing Imidazolium‐Based Ionic Liquid. MACROMOL REACT ENG 2023. [DOI: 10.1002/mren.202300002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Tamara Agner
- Department of Chemical Engineering and Food Engineering Federal University of Santa Catarina Florianópolis SC 88040‑900 Brazil
| | - Amadeo Zimermann
- Department of Chemical Engineering and Food Engineering Federal University of Santa Catarina Florianópolis SC 88040‑900 Brazil
| | - Fabricio Machado
- Chemistry Institute University of Brasília Brasília DF 70910‑900 Brazil
| | - Brenno A. D. Neto
- Chemistry Institute University of Brasília Brasília DF 70910‑900 Brazil
| | - Pedro H. H. de Araújo
- Department of Chemical Engineering and Food Engineering Federal University of Santa Catarina Florianópolis SC 88040‑900 Brazil
| | - Claudia Sayer
- Department of Chemical Engineering and Food Engineering Federal University of Santa Catarina Florianópolis SC 88040‑900 Brazil
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Melchiors MS, Vieira TY, Pereira LPS, Feuser PE, Ferrão V, Machado F, Carciofi BAM, de Araújo PHH, de Oliveira D, Sayer C. Copolymerization of limonene oxide and cyclic anhydrides catalyzed by ionic liquid BMI·Fe2Cl7, nanoparticles preparation, crosslinking, and cytotoxicity studies. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03152-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wang T, Wang YN, Wang R, Zhang BC, Yang C, Li YL, Wang XS. Enantioselective cyanation via radical-mediated C-C single bond cleavage for synthesis of chiral dinitriles. Nat Commun 2019; 10:5373. [PMID: 31772198 PMCID: PMC6879615 DOI: 10.1038/s41467-019-13369-x] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/05/2019] [Indexed: 01/24/2023] Open
Abstract
Ring-opening reaction via selective cleavage of C–C bond is known as a powerful strategy for construction of complex molecules. Complementary to the ionic process focusing on mostly small ring systems, radical-mediated C–C bond cleavage offers a solution for further diverse enantioselective functionalization benefited from its mild conditions, whereas such asymmetric transformations are still limited to three-membered rings so far. Herein, we describe radical-mediated ring-opening and enantioselective cyanation of four- and five-membered cycloketone oxime esters to access chiral 1,5- and 1,6-dinitriles. Employment of dual photoredox/copper catalysis is essential for the asymmetric ring-opening cyanation of cyclopentanone oxime esters. Both reactions proceed under mild conditions giving chiral dinitriles in high yields and enantioselectivity with low catalyst loading and broad substrate scope. The products dinitriles can be converted to valuable optically active diamides and diamines. Mechanistic studies indicate that the benzylic radical generated via C–C single bond cleavage is involved in the catalytic cycle. Ring-opening reaction via selective cleavage of C–C bond is a powerful strategy to increase molecular complexity. Here the authors present the facile synthesis of chiral 1,5- and 1,6-dinitriles via the radical-mediated ring-opening and enantioselective cyanation of cycloketone oxime esters.
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Affiliation(s)
- Tao Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China
| | - Yi-Ning Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China
| | - Rui Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China
| | - Bo-Chao Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China
| | - Chi Yang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China
| | - Yan-Lin Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China
| | - Xi-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, 96 Jinzhai Road, 230026, Hefei, Anhui, P. R. China.
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Alves RC, Agner T, Rodrigues TS, Machado F, Neto BA, da Costa C, de Araújo PH, Sayer C. Cationic miniemulsion polymerization of styrene mediated by imidazolium based ionic liquid. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.04.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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