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Precise Synthesis of Bottlebrush Block Copolymers from ω-End-Norbornyl Polystyrene and Poly(4-tert-butoxystyrene) via Living Anionic Polymerization and Ring-Opening Metathesis Polymerization

Yu, Yong-Guen and Chae, Chang-Geun and Kim, Myung-Jin and Seo, Ho-Bin and Grubbs, Robert H. and Lee, Jae-Suk (2018) Precise Synthesis of Bottlebrush Block Copolymers from ω-End-Norbornyl Polystyrene and Poly(4-tert-butoxystyrene) via Living Anionic Polymerization and Ring-Opening Metathesis Polymerization. Macromolecules, 51 (2). pp. 447-455. ISSN 0024-9297. https://resolver.caltech.edu/CaltechAUTHORS:20180109-112951980

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Abstract

A facile and efficient synthetic grafting-through strategy for preparing well-defined bottlebrush block copolymers (BBCPs) was developed through a combination of living anionic polymerization (LAP) and ring-opening metathesis polymerization (ROMP). ω-End-norbornyl polystyrene (NPSt) and poly(4-tert-butoxystyrene) (NPtBOS) were synthesized by LAP using terminator of chlorine moiety containing silane-protecting amine and coupled with a subsequent amidation using norbornyl activated ester. Bottlebrush homopolymers of NPSt were obtained by ROMP with ultrahigh molecular weights (MWs, M_w = 2928 kDa) and narrow molecular weight distributions (MWDs, Đ = 1.07) at high degree of polymerizations (DP_w = 1084). Well-defined BBCPs with ultrahigh MWs (M_w ∼ 3055 kDa) and narrow MWDs (Đ ∼ 1.13) were synthesized through sequential ROMP of NPSt with NPtBOS. The effect of ultrahigh MWs was investigated by self-assembly of the BBCPs in which the phase-separated BBCPs presented periodic lamellar structures and exhibited structural colors from blue to pink.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/acs.macromol.7b02447DOIArticle
http://pubs.acs.org/doi/10.1021/acs.macromol.7b02447PublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/acs.macromol.7b02447PublisherSupporting Information
ORCID:
AuthorORCID
Chae, Chang-Geun0000-0001-8805-6743
Grubbs, Robert H.0000-0002-0057-7817
Lee, Jae-Suk0000-0002-6611-2801
Additional Information:© 2018 American Chemical Society. Received: November 20, 2017; Revised: December 19, 2017; Published: January 9, 2018. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2015R1A2A1A01002493) and by the GIST Research Institute (GRI) grant funded by the GIST in 2017. The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
National Research Foundation of KoreaNRF-2015R1A2A1A01002493
Gwangju Institute of Science and TechnologyUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20180109-112951980
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180109-112951980
Official Citation:Precise Synthesis of Bottlebrush Block Copolymers from ω-End-Norbornyl Polystyrene and Poly(4-tert-butoxystyrene) via Living Anionic Polymerization and Ring-Opening Metathesis Polymerization. Yong-Guen Yu, Chang-Geun Chae, Myung-Jin Kim, Ho-Bin Seo, Robert H. Grubbs, and Jae-Suk Lee. Macromolecules 2018 51 (2), 447-455. DOI: 10.1021/acs.macromol.7b02447
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84192
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Jan 2018 20:34
Last Modified:09 Mar 2020 13:18

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