ED-ROP of macrocyclic oligomers:&#x0D;
A synthetic tool for multicomponent polymer materials

Stagnaro, Paola; Brunengo, Elisabetta; Conzatti, Lucia

doi:10.24820/ark.5550190.p011.600

Cited by 2 publications

(3 citation statements)

References 162 publications

(282 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While some macrocyclic systems have been shown to polymerize, a well-defined monomer for chain-growth ring-opening polymerization through S N Ar chemistry has yet to be realized. 43 ■ RESULTS AND DISCUSSION Monomer Design and Synthesis. To identify the feasibility of a ring-opening monomer for S N Ar, exchange reactions were examined between benzyl mercaptan (BnSH) and aryl dodecyl sulfides with different electron-withdrawing para-substituents (CN, CHO, and NO 2 ).…”

Section: ■ Introductionmentioning

confidence: 99%

“…To merge this concept with the potential for recyclability to monomer, a cyclic aromatic thioether capable of S N Ar was envisioned that could be polymerized through nucleophilic aromatic ring-opening polymerization (S N ArROP) (Figure d). While some macrocyclic systems have been shown to polymerize, a well-defined monomer for chain-growth ring-opening polymerization through S N Ar chemistry has yet to be realized …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chemically Recyclable Polymer System Based on Nucleophilic Aromatic Ring-Opening Polymerization

Liang

Huan

et al. 2023

J. Am. Chem. Soc.

View full text Add to dashboard Cite

The development of chemically recyclable polymers with desirable properties is a long-standing but challenging goal in polymer science. Central to this challenge is the need for reversible chemical reactions that can equilibrate at rapid rates and provide efficient polymerization and depolymerization cycles. Based on the dynamic chemistry of nucleophilic aromatic substitution (S N Ar), we report a chemically recyclable polythioether system derived from readily accessible benzothiocane (BT) monomers. This system represents the first example of a well-defined monomer platform capable of chain-growth ring-opening polymerization through an S N Ar manifold. The polymerizations reach completion in minutes, and the pendant functionalities are easily customized to tune material properties or render the polymers amenable to further functionalization. The resulting polythioether materials exhibit comparable performance to commercial thermoplastics and can be depolymerized to the original monomers in high yields.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemically Recyclable Polymer System Based on Nucleophilic Aromatic Ring-Opening Polymerization

Liang

Huan

et al. 2023

J. Am. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…At an industrial level, biodiesel is obtained mainly by transesterification of vegetable oils with methanol or ethanol in the presence of an acid or base catalyst, to produce the corresponding fatty acid methyl or ethyl esters (FAME) and glycerol [ 3 ]. Biodiesel is produced mainly by homogeneous acid or base catalysis, with remarkable catalytic activity [ 4 ]. However, this process encounters various problems, such as separation, purification, wastewater production, sensitivity to free fatty acids, and recyclability.…”

Section: Introductionmentioning

confidence: 99%

Biocatalysts Synthesized with Lipase from Pseudomonas cepacia on Glycol-Modified ZIF-8: Characterization and Utilization in the Synthesis of Green Biodiesel

et al. 2022

View full text Add to dashboard Cite

This research presents results on the production of biodiesel from the transesterification of acylglycerides present in palm oil, using the biocatalysts ZIF-8-PCL and Gly@ZIF-8-PCL synthesized by immobilization of Pseudomonas Cepacia Lipase as catalytic materials and using pure ZIF-8 and Gly@ZIF-8 (modified ZIF-8) as supports. The Gly@ZIF-8 carbonaceous material was prepared by wet impregnation of ZIF-8 with ethylene glycol as the carbon source, and then thermally modified. The calcination conditions were 900 °C for two hours with a heating rate of 7 °C/min in an inert atmosphere. A textural characterization was performed, and results showed superficial changes of materials at the microporous and mesoporous levels for the Gly@ZIF-8 material. Both the starting materials and biocatalysts were characterized by infrared spectroscopy (FTIR) and Raman spectroscopy. During the transesterification, using the two biocatalysts (ZIF-8-PCL and Gly@ZIF-8-PCL), two supernatant liquids were generated which were characterized by infrared spectroscopy (FTIR), gas chromatography coupled to mass spectrometry (GC-MS), and nuclear magnetic resonance (NMR). The results show that the two routes of synthesis of supports from ZIF-8 will be configured as effective methods for the generation of effective biocatalysts for biodiesel production.

show abstract

ED-ROP of macrocyclic oligomers: A synthetic tool for multicomponent polymer materials

Cited by 2 publications

References 162 publications

Chemically Recyclable Polymer System Based on Nucleophilic Aromatic Ring-Opening Polymerization

Chemically Recyclable Polymer System Based on Nucleophilic Aromatic Ring-Opening Polymerization

Biocatalysts Synthesized with Lipase from Pseudomonas cepacia on Glycol-Modified ZIF-8: Characterization and Utilization in the Synthesis of Green Biodiesel

Contact Info

Product

Resources

About