TY - JOUR
T1 - Two-Step Divergent Synthesis of Monodisperse and Ultra-Long Bottlebrush Polymers from an Easily Purifiable ROMP Monomer
AU - Yamauchi, Yoshihiro
AU - Horimoto, Noriko Nishizawa
AU - Yamada, Kuniyo
AU - Matsushita, Yoshitaka
AU - Takeuchi, Masayuki
AU - Ishida, Yasuhiro
N1 - Funding Information:
This work was supported by JST CREST (JPMJCR17N1 to Y.I.), Grant-in-Aid for Scientific Research (B) (20H02791 to Y.I.), Grant-in-Aid for Scientific Research (B) (20H02454 to Y.Y.), the Izumi Science and Technology Foundation (2018-J-115 to Y.Y.), the Iketani Science and Technology Foundation (0321143-A to Y.Y.), and the Shorai Foundation for Science and Technology (to Y.Y.), and Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) (19H05818 to Y.M.). We thank Dr. Sadaki Samitsu (NIMS) and Dr. Naoto Iwata (RIKEN) for discussions and Ms. Keiko Suzuki for elemental analysis.
Funding Information:
This work was supported by JST CREST (JPMJCR17N1 to Y.I.), Grant‐in‐Aid for Scientific Research (B) (20H02791 to Y.I.), Grant‐in‐Aid for Scientific Research (B) (20H02454 to Y.Y.), the Izumi Science and Technology Foundation (2018‐J‐115 to Y.Y.), the Iketani Science and Technology Foundation (0321143‐A to Y.Y.), and the Shorai Foundation for Science and Technology (to Y.Y.), and Grant‐in‐Aid for Scientific Research on Innovative Areas (Research in a proposed research area) (19H05818 to Y.M.). We thank Dr. Sadaki Samitsu (NIMS) and Dr. Naoto Iwata (RIKEN) for discussions and Ms. Keiko Suzuki for elemental analysis.
Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2021/1/18
Y1 - 2021/1/18
N2 - The longest bottlebrush polymers reported so far (up to 7 μm in length) were synthesized in two steps from a norbornene derivative bearing two 2-bromoisobutylate moieties (NB). The key to this achievement is the excellent reactivity of NB in ring opening metathesis polymerization, which proceeded in a well-controlled manner with quantitative conversion of NB for monomer-initiator ratios ranging up to 10,000. The resultant polymer derived from NB was readily converted to various bottlebrush polymers in a divergent synthetic route by grafting vinyl monomers from the 2-bromoisobutylate units in NB via atom transfer radical polymerization. The structure of the ultra-long bottlebrush polymer was directly observed using atomic force microscopy.
AB - The longest bottlebrush polymers reported so far (up to 7 μm in length) were synthesized in two steps from a norbornene derivative bearing two 2-bromoisobutylate moieties (NB). The key to this achievement is the excellent reactivity of NB in ring opening metathesis polymerization, which proceeded in a well-controlled manner with quantitative conversion of NB for monomer-initiator ratios ranging up to 10,000. The resultant polymer derived from NB was readily converted to various bottlebrush polymers in a divergent synthetic route by grafting vinyl monomers from the 2-bromoisobutylate units in NB via atom transfer radical polymerization. The structure of the ultra-long bottlebrush polymer was directly observed using atomic force microscopy.
KW - ATRP
KW - bottlebrush polymers
KW - polymerization
KW - ROMP
KW - single-molecule observation
UR - http://www.scopus.com/inward/record.url?scp=85096868597&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85096868597&partnerID=8YFLogxK
U2 - 10.1002/anie.202009759
DO - 10.1002/anie.202009759
M3 - Article
C2 - 33058482
AN - SCOPUS:85096868597
SN - 1433-7851
VL - 60
SP - 1528
EP - 1534
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 3
ER -