2018
DOI: 10.1021/acs.macromol.8b00355
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Multicyclic Polymer Synthesis through Controlled/Living Cyclopolymerization of α,ω-Dinorbornenyl-Functionalized Macromonomers

Abstract: A novel synthesis of multicyclic polymers that feature ultradense arrays of cyclic polymer units has been developed by exploiting the cyclopolymerization of α,ω-norbornenyl end-functionalized macromonomers mediated by the Grubbs thirdgeneration catalyst (G3). Owing to the living polymerization nature, the number of cyclic repeating units in these multicyclic polymers was controlled to be between 1 and approximately 70 by varying the initial macromonomer-to-G3 ratio. The ring size was also tuned by choosing the… Show more

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Cited by 35 publications
(31 citation statements)
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“…14) also supported the exact product structure that main peak with mass value of 301.9916 corresponded to the sum of the mass of the coupling product (279.00) and the mass of Na + (22.99). Then, 1b-1c reacted with 3b-3e to afford a series of condensation products (Entry 2-6 in [25][26][27][28]. High efficiency, high orthogonality to various groups, high regioselectivity, easily obtained reactants, and mild condition make RA reaction a very useful tool in polymer chemistry.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…14) also supported the exact product structure that main peak with mass value of 301.9916 corresponded to the sum of the mass of the coupling product (279.00) and the mass of Na + (22.99). Then, 1b-1c reacted with 3b-3e to afford a series of condensation products (Entry 2-6 in [25][26][27][28]. High efficiency, high orthogonality to various groups, high regioselectivity, easily obtained reactants, and mild condition make RA reaction a very useful tool in polymer chemistry.…”
Section: Resultsmentioning
confidence: 99%
“…Although there are some needs on the concentration and time-required synthetic procedures, ring-closure method takes the advantage of conveniently utilizing the developed controlled/living polymerization strategies and efficient coupling reactions to produce cyclic polymers with designed molecular structures. Thus, the existing reports towards synthesizing complex multicyclic polymers are limited to only ring-closure strategy [22][23][24][25][26][27] and a few cyclopolymerization strategy 6,28 . For example, Tezuka, etc.…”
mentioning
confidence: 99%
“…There have been several reports of mGBCPs with cyclic side chains either covalently or supramolecularly formed . The covalently formed mGBCPs were synthesized by random copolymerization of α,ω‐norborneneyl end‐functionalized PEO ( M n =5.1 kDa) and PLLA ( M n =5.0 kDa) side chains by ROMP . The cyclopolymerization resulted in multicyclic mGBCPs with cyclic PEO and PLLA side chains (Figure a).…”
Section: Mgbcps With Untraditional Side Chainsmentioning
confidence: 99%
“…Adapted from ref. and with permission from the American Chemical Society and Wiley Periodicals, respectively.…”
Section: Mgbcps With Untraditional Side Chainsmentioning
confidence: 99%
“…ROMP also has demonstrated a wide functional group tolerance to produce well‐defined bottlebrush block copolymers with MMs carrying heteroatom functional groups through sequential ROMP 43–46. Well‐controlled MMs are needed for well‐defined bottlebrush polymers and they have been synthesized from a variety of techniques, which suppress side reactions of norbornene incorporation, such as reversible addition‐fragmentation chain transfer (RAFT) polymerization,47–49 atom transfer radical polymerization (ATRP),50–52 living anionic polymerization (LAP),53,54 ring‐opening polymerization (ROP),55 and other types of polymerizations 56,57.…”
Section: Introductionmentioning
confidence: 99%