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Revision as of 01:33, 19 December 2024 editCitation bot (talk | contribs)Bots5,409,459 edits Altered pages. Add: bibcode, pmid. Formatted dashes. | Use this bot. Report bugs. | Suggested by Eastmain | Category:AfC pending submissions by age/0 days ago | #UCB_Category 20/108← Previous edit Latest revision as of 21:26, 20 December 2024 edit undoGraeme Bartlett (talk | contribs)Administrators249,639 edits Commenting on submission (AFCH) 
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{{AFC comment|1=Please use foot notes. Add the appropriate references after the statement they apply to. ] (]) 21:26, 20 December 2024 (UTC)}}

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{{Short description|polymer chemistry}} {{Short description|polymer chemistry}}
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{{Draft topics|technology|chemistry|physics}} {{Draft topics|technology|chemistry|physics}}



'''Thiyl Radical Addition-Fragmentation Chain Transfer (SRAFT) Polymerization''' is a method within the broader category of reversible-deactivation radical polymerization (RDRP). This technique specifically targets the control of thiyl radical propagation, which has historically been challenging due to the unique properties of thiyl radicals. '''Thiyl Radical Addition-Fragmentation Chain Transfer (SRAFT) Polymerization''' is a method within the broader category of reversible-deactivation radical polymerization (RDRP). This technique specifically targets the control of thiyl radical propagation, which has historically been challenging due to the unique properties of thiyl radicals.

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Add tags to your draft Editor resources Declined by KylieTastic 2 months ago. Last edited by Graeme Bartlett 8 days ago. Reviewer: Inform author.This draft has been resubmitted and is currently awaiting re-review.
  • Comment: Please use foot notes. Add the appropriate references after the statement they apply to. Graeme Bartlett (talk) 21:26, 20 December 2024 (UTC)
polymer chemistry

Thiyl Radical Addition-Fragmentation Chain Transfer (SRAFT) Polymerization is a method within the broader category of reversible-deactivation radical polymerization (RDRP). This technique specifically targets the control of thiyl radical propagation, which has historically been challenging due to the unique properties of thiyl radicals.

Key Aspects of SRAFT Polymerization:

1. Thiyl Radical Control: SRAFT polymerization is designed to control the propagation of thiyl radicals using allyl sulfides as chain transfer agents. These agents enable the reversible deactivation of the thiyl radicals, allowing for precise control over the polymerization process, which is crucial for synthesizing polymers with well-defined architectures.

2. Allyl Sulfides as Chain Transfer Agents: In this method, allyl sulfides serve as the key component in reversibly deactivating the thiyl radicals. This reversible deactivation allows for the controlled growth of the polymer chains, akin to other RDRP techniques but tailored to the unique challenges posed by thiyl radicals.

3. Polymerization Outcomes: The SRAFT method demonstrates a linear relationship between molecular weight and monomer conversion, high chain-end fidelity, and effective chain extension, indicating good control over the polymerization process.

4. Density Functional Theory (DFT) Insights: DFT calculations in this research provide a deeper understanding of the reversible deactivation capabilities of allyl sulfides, further supporting the effectiveness of the SRAFT process.

Significance:

This innovative approach opens up new avenues in controlled polymerization, particularly in the realm of thiyl radical chemistry. The development of SRAFT polymerization represents a significant advancement in the ability to create well-defined polymer architectures using challenging radical species.

This method holds promise for the discovery and development of new controlled polymerization techniques that leverage the unique properties of thiyl radicals, potentially leading to novel materials with specialized functions.

References

  1. Wang, Yongjin; Du, Jiaman; Huang, Hanchu (March 18, 2024). "Reversible Thiyl Radical Addition−Fragmentation Chain Transfer Polymerization". Angewandte Chemie International Edition. 63 (12): e202318898. doi:10.1002/anie.202318898. PMID 38284482.
  2. Huang, Hanchu; Sun, Bohan; Huang, Yingzi; Niu, Jia (June 19, 2018). "Radical Cascade-Triggered Controlled Ring-Opening Polymerization of Macrocyclic Monomers". Journal of the American Chemical Society. 140 (33): 10402–10406. Bibcode:2018JAChS.14010402H. doi:10.1021/jacs.8b05365. PMID 29920082.
  3. Zhang, Shuai; Wang, Yongjin; Huang, Hanchu; Cao, Derong (July 21, 2023). "A Strategy for Controlling the Polymerizations of Thiyl Radical Propagation by RAFT Agents". Angewandte Chemie International Edition. 62 (37): e202308524. doi:10.1002/anie.202308524.
  4. Zhang, Shuai; Cao, Chi; Jiang, Suqiu; Huang, Hanchu (October 19, 2022). "A General Strategy for Radical Ring-Opening Polymerization of Macrocyclic Allylic Sulfides". Macromolecules. 55 (21): 9411–9419. Bibcode:2022MaMol..55.9411Z. doi:10.1021/acs.macromol.2c01636.
  5. Sbordone, Federica; Frisch, Hendrik (May 31, 2024). "Plenty of Space in the Backbone: Radical Ring-Opening Polymerization". Chemistry-A European Journal. 30 (44): e202401547. doi:10.1002/chem.202401547. PMID 38818742.
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