Facile synthesis of A2mB2n-type starlike copolymers with two types of V-shaped arms by combination of RAFT, ATRP and ROP processes

Liu, Huanhuan; Xiao, Jianzhong; Bian, Rongjian; Tong, Min; Tang, Dandan; Zhou, Xiangdong; Zhao, Youliang

doi:10.1016/j.polymer.2015.01.059

Cited by 9 publications

(5 citation statements)

References 59 publications

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“…Various solvents were purchased from Sinopharm Chemical Reagent Co., Ltd and purified according to standard procedures. 2-(2-Cyanopropyl)dithiobenzoate (CPDB), 70 2-cyano-5-hydroxypentan-2-yl dithiobenzoate (CHDB), 71 4-vinylbenzyl 2,2-di((2-bromopropanoyloxy)methyl)propanoate (St(Br) 2 ), 62 and 2-maleimidoethyl 2,2-di(hydroxymethyl)propanoate (MI(OH) 2 ) 62 were synthesized according to literature procedures. Other reagents were of analytical grade and used as received.…”

Section: Methodsmentioning

confidence: 99%

“…60,61 More recently, we have applied this system to generate A 2m B 2n -type (m ≈ n) star-like copolymers with an oligomeric core and V-shaped arms. 62 As the chain length of a linear polymer backbone is further extended, it is promising to synthesize densely grafted polymer brushes with V-shaped grafts. Considering the great potential of such a BC grafts.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and properties of stimuli-sensitive heterografted toothbrush-like terpolymers with a linear handle and two types of V-shaped grafts

Tong

Pan

et al. 2016

Polym. Chem.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of stimuli-sensitive heterografted toothbrush-like terpolymers with a linear handle and two types of V-shaped grafts

Tong

Pan

et al. 2016

Polym. Chem.

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“…A kinetic study of the ATRP synthesis of polyMEMA was then realized under the same conditions as those used for polyAZMA. To the best of our knowledge, the kinetics of the controlled homopolymerization of MEMA has never been reported up to now, despite the frequent use of this monomer in copolymerization reactions [ 27 , 28 ]. The kinetic results indicate that the polymerization satisfies all the criteria of a controlled polymerization in molar mass for polymerization times ranging from 1 h to 7 h, up to a monomer conversion of 63%.…”

Section: Resultsmentioning

confidence: 99%

Post-Modification of Copolymers Obtained by ATRP for an Application in Heterogeneous Asymmetric Salen Catalysis

et al. 2022

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Copolymers are valuable supports for obtaining heterogeneous catalysts that allow their recycling and therefore substantial savings, particularly in the field of asymmetric catalysis. This contribution reports the use of two comonomers: Azido-3-propylmethacrylate (AZMA) bearing a reactive azide function was associated with 2-methoxyethyl methacrylate (MEMA), used as a spacer, for the ATRP synthesis of copolymers, and then post-functionalized with a propargyl chromium salen complex. The controlled homopolymerization of MEMA by ATRP was firstly described and proved to be more controlled in molar mass than that of AZMA for conversions up to 63%. The ATRP copolymerization of both monomers made it possible to control the molar masses and the composition, with nevertheless a slight increase in the dispersity (from 1.05 to 1.3) when the incorporation ratio of AZMA increased from 10 to 50 mol%. These copolymers were post-functionalized with chromium salen units by click chemistry and their activity was evaluated in the asymmetric ring opening of cyclohexene oxide with trimethylsilyl azide. At an equal catalytic ratio, a significant increase in enantioselectivity was obtained by using the copolymer containing the largest part of salen units, probably allowing, in this case, the more favorable bimetallic activation of both the engaged nucleophile and electrophile. Moreover, the catalytic polymer was recovered by simple filtration and re-engaged in subsequent catalytic runs, up to seven times, without loss of activity or selectivity.

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“…There are reports that other functional initiators (Entries 3 and 4, Table ) can be used to mediate the RAFT polymerizations of MAMs, then the obtained polymers after RAFT end group removal be successfully chain extended of another MAMs by the ATRP. The use of functional monomers containing ATRP initiation groups to prepare well‐defined graft copolymers via the combination of RAFT polymerization ‐Ŧ‐ ATRP are summarized in Table 5 . It is worth mentioning that a combination of RAFT polymerization, ATRP and NMP was also used to synthesize dual brush copolymers by Laschewsky et al …”

Section: Transformations From Raftmentioning

confidence: 99%

Polymer Synthesis with More Than One Form of Living Polymerization Method

Guo

Choi

Feng

et al. 2018

Macromol. Rapid Commun.

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Controlled radical polymerization (CRP) or controlled/living radical polymerization has revolutionized the polymer industry as a tool for the preparation of a wide variety of polymers. This process enables the preparation of polymers with good control of molecular weight, narrow polydispersity, and a range of architectures including block and graft copolymers, star polymers, and other functional polymers. The mechanistic transformation reaction provides a great opportunity to tune chemical and physical properties of copolymers. It can be applied to combine different homopolymers using post‐modification techniques or by the use of a dual initiator, allowing the combination of mechanistically distinct polymerization reactions. This review will cover CRP transformations including the synthesis of block copolymers with both linear structures (AB, ABA, (AB) n , multiblocks, etc.) and branched macromolecular architectures (graft, miktoarm star, and dendritic‐like), which are obtained by a combination of more than one form of living polymerization reaction.

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Facile synthesis of A2mB2n-type starlike copolymers with two types of V-shaped arms by combination of RAFT, ATRP and ROP processes

Cited by 9 publications

References 59 publications

Synthesis and properties of stimuli-sensitive heterografted toothbrush-like terpolymers with a linear handle and two types of V-shaped grafts

Synthesis and properties of stimuli-sensitive heterografted toothbrush-like terpolymers with a linear handle and two types of V-shaped grafts

Post-Modification of Copolymers Obtained by ATRP for an Application in Heterogeneous Asymmetric Salen Catalysis

Polymer Synthesis with More Than One Form of Living Polymerization Method

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