Atom transfer radical polymerization and copolymerization of isoprene catalyzed by copper bromide/2,2′-bipyridine

Zhu, Yulong; Jiang, Fengjiao; Zhang, Panpan; Luo, Jiao; Tang, Huadong

doi:10.1016/j.cclet.2016.02.029

Cited by 13 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is an expected effect as photoRAFT relies on radical generation by RAFTendgroup homolytic decomposition, hence when lower RAFT agent concentrations are present (higher DP targeted), reactions become slower. [19,25,26] Especially for slowly propagating monomers the radical concentration needs to be rather high to reach as ufficiently polymerization rate which inevitably leads to alimited number of termination events.However,the linear evolution of masses for all these reactions confirm the straightforward and controlled implementation of the isoprene polymerization via the photoiniferter RAFT mechanism in the continuous-flow microreactor. Dispersities increase with conversion and targeted DP owing to irreversible termination of propagating radicals but stay within reasonable limits.…”

mentioning

confidence: 99%

“…Dispersities increase with conversion and targeted DP owing to irreversible termination of propagating radicals but stay within reasonable limits. [19,25,26] Especially for slowly propagating monomers the radical concentration needs to be rather high to reach as ufficiently polymerization rate which inevitably leads to alimited number of termination events.However,the linear evolution of masses for all these reactions confirm the straightforward and controlled implementation of the isoprene polymerization via the photoiniferter RAFT mechanism in the continuous-flow microreactor. DPs are easily adjusted while the temperature is kept relatively low to maintain ah igh chain-end fidelity and simultaneously promote fast growth of the polymer chains.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Ultrafast PhotoRAFT Block Copolymerization of Isoprene and Styrene Facilitated through Continuous‐Flow Operation

Lauterbach¹,

Rubens

Abetz³

et al. 2018

Angew Chem Int Ed

View full text Add to dashboard Cite

Polymers made from isoprene and styrene resemble an important class of synthetic macromolecules found in a wide range of everyday commodity products. Their synthesis is usually limited to radical emulsion or anionic polymerization. Herein, we report on ultrafast photoiniferter reversible addition-fragmentation chain transfer (RAFT) polymerization of isoprene and styrene in a continuous-flow microreactor. The cooperative action of a high photoinitiation efficiency and use of elevated temperatures considerably reduces the reaction times to less than half an hour to give high monomer conversions, allowing for the first time polyisoprene to be yielded from controlled radical polymerization in high definition and reasonable reaction times. High chain-end fidelities are maintained and block copolymers were prepared including a polystyrene-block-polyisoprene-block-polystyrene (PS-b-PI-b-PS) triblock copolymer.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Ultrafast PhotoRAFT Block Copolymerization of Isoprene and Styrene Facilitated through Continuous‐Flow Operation

Lauterbach¹,

Rubens

Abetz³

et al. 2018

Angew Chem Int Ed

View full text Add to dashboard Cite

show abstract

“…The most important component is the catalyst, which is a key factor to the ‘living’/controlled characteristics of polymerization. Up to now, a large variety of transition metal complexes—such as Cu, Ru, Mo, Rh, Ni, Pd, Co coordination compounds—have been successfully employed as catalysts in ATRP systems [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Environmentally Friendly Atom Transfer Radical Polymerization

et al. 2020

View full text Add to dashboard Cite

Atom transfer radical polymerization (ATRP) is one of the most successful techniques for the preparation of well-defined polymers with controllable molecular weights, narrow molecular weight distributions, specific macromolecular architectures, and precisely designed functionalities. ATRP usually involves transition-metal complex as catalyst. As the most commonly used copper complex catalyst is usually biologically toxic and environmentally unsafe, considerable interest has been focused on iron complex, enzyme, and metal-free catalysts owing to their low toxicity, inexpensive cost, commercial availability and environmental friendliness. This review aims to provide a comprehensive understanding of iron catalyst used in normal, reverse, AGET, ICAR, GAMA, and SARA ATRP, enzyme as well as metal-free catalyst mediated ATRP in the point of view of catalytic activity, initiation efficiency, and polymerization controllability. The principle of ATRP and the development of iron ligand are briefly discussed. The recent development of enzyme-mediated ATRP, the latest research progress on metal-free ATRP, and the application of metal-free ATRP in interdisciplinary areas are highlighted in sections. The prospects and challenges of these three ATRP techniques are also described in the review.

show abstract

“…27 It also has been proved to be an excellent tool to introduce organic (co) polymers with precise molar mass, composition, and functionality onto nanoparticles. 28,29 Recently, organic polymer chains graed from particles by using SI-ATRP have been used as carbon precursors to prepare mesocarbon materials.…”

mentioning

confidence: 99%

Preparation of magnetic mesoporous carbon from polystyrene-grafted magnetic nanoparticles for rapid extraction of chlorophenols from water samples

2017

View full text Add to dashboard Cite

Atom transfer radical polymerization and copolymerization of isoprene catalyzed by copper bromide/2,2′-bipyridine

Cited by 13 publications

References 29 publications

Ultrafast PhotoRAFT Block Copolymerization of Isoprene and Styrene Facilitated through Continuous‐Flow Operation

Ultrafast PhotoRAFT Block Copolymerization of Isoprene and Styrene Facilitated through Continuous‐Flow Operation

Development of Environmentally Friendly Atom Transfer Radical Polymerization

Preparation of magnetic mesoporous carbon from polystyrene-grafted magnetic nanoparticles for rapid extraction of chlorophenols from water samples

Contact Info

Product

Resources

About