Topologically Precise and Discrete Bottlebrush Polymers: Synthesis, Characterization, and Structure-Property Relationships

Nduka D. Ogbonna; Michael Dearman; Cheng Ta Cho; Bhuvnesh Bharti; Andrew J. Peters; Jimmy Lawrence

doi:10.1021/jacsau.2c00010

Topologically Precise and Discrete Bottlebrush Polymers: Synthesis, Characterization, and Structure-Property Relationships

Nduka D. Ogbonna, Michael Dearman, Cheng Ta Cho, Bhuvnesh Bharti, Andrew J. Peters, Jimmy Lawrence

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

As the complexity of polymer structure grows, so do the challenges for developing an accurate understanding of their structure-property relationships. Here, the synthesis of bottlebrush polymers with topologically precise and fully discrete structures is reported. A key feature of the strategy is the synthesis of discrete macromonomer libraries for their polymerization into topologically precise bottlebrushes that can be separated into discrete bottlebrushes (D = 1.0). As the system becomes more discrete, packing efficiency increases, distinct three-phase Langmuir-Blodgett isotherms are observed, and its glass transition temperature becomes responsive to side-chain sequence. Overall, this work presents a versatile strategy to access a range of precision bottlebrush polymers and unravels the impact of side-chain topology on their macroscopic properties. Precise control over side chains opens a pathway for tailoring polymer properties without changing their chemical makeup.

Original language	English
Pages (from-to)	898-905
Number of pages	8
Journal	JACS Au
Volume	2
Issue number	4
DOIs	https://doi.org/10.1021/jacsau.2c00010
State	Published - Apr 25 2022
Externally published	Yes

Funding

N.O. and J.L. acknowledge the support from Louisiana Board of Regents funding (RD-A-07), the American Chemical Society Petroleum Research Fund (62656-DN17), and BASF Living Sustainability Laboratory Program. B.B. acknowledges the support from NSF-CAREER (CBET-1943986). A.J.P. acknowledges Louisiana Board of Regents funding (RD-A-18). The authors acknowledge the support for material characterizations by the NMR Facility, Polymer Analysis Laboratory (Dr. Rafael Cueto), and the Mass Spectroscopy Facility (NIH 1S10RR024520-01A1) at Louisiana State University. The high-performance computing resources provided by the Louisiana Optical Network Infrastructure ( https://loni.org ) were used for this work.

Keywords

discrete bottlebrushes
discrete macromonomer
glass transition temperature
polymerization kinetics
precision bottlebrush polymers

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10.1021/jacsau.2c00010

Cite this

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title = "Topologically Precise and Discrete Bottlebrush Polymers: Synthesis, Characterization, and Structure-Property Relationships",

abstract = "As the complexity of polymer structure grows, so do the challenges for developing an accurate understanding of their structure-property relationships. Here, the synthesis of bottlebrush polymers with topologically precise and fully discrete structures is reported. A key feature of the strategy is the synthesis of discrete macromonomer libraries for their polymerization into topologically precise bottlebrushes that can be separated into discrete bottlebrushes (D = 1.0). As the system becomes more discrete, packing efficiency increases, distinct three-phase Langmuir-Blodgett isotherms are observed, and its glass transition temperature becomes responsive to side-chain sequence. Overall, this work presents a versatile strategy to access a range of precision bottlebrush polymers and unravels the impact of side-chain topology on their macroscopic properties. Precise control over side chains opens a pathway for tailoring polymer properties without changing their chemical makeup.",

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T2 - Synthesis, Characterization, and Structure-Property Relationships

AU - Ogbonna, Nduka D.

AU - Dearman, Michael

AU - Cho, Cheng Ta

AU - Bharti, Bhuvnesh

AU - Peters, Andrew J.

AU - Lawrence, Jimmy

PY - 2022/4/25

Y1 - 2022/4/25

N2 - As the complexity of polymer structure grows, so do the challenges for developing an accurate understanding of their structure-property relationships. Here, the synthesis of bottlebrush polymers with topologically precise and fully discrete structures is reported. A key feature of the strategy is the synthesis of discrete macromonomer libraries for their polymerization into topologically precise bottlebrushes that can be separated into discrete bottlebrushes (D = 1.0). As the system becomes more discrete, packing efficiency increases, distinct three-phase Langmuir-Blodgett isotherms are observed, and its glass transition temperature becomes responsive to side-chain sequence. Overall, this work presents a versatile strategy to access a range of precision bottlebrush polymers and unravels the impact of side-chain topology on their macroscopic properties. Precise control over side chains opens a pathway for tailoring polymer properties without changing their chemical makeup.

AB - As the complexity of polymer structure grows, so do the challenges for developing an accurate understanding of their structure-property relationships. Here, the synthesis of bottlebrush polymers with topologically precise and fully discrete structures is reported. A key feature of the strategy is the synthesis of discrete macromonomer libraries for their polymerization into topologically precise bottlebrushes that can be separated into discrete bottlebrushes (D = 1.0). As the system becomes more discrete, packing efficiency increases, distinct three-phase Langmuir-Blodgett isotherms are observed, and its glass transition temperature becomes responsive to side-chain sequence. Overall, this work presents a versatile strategy to access a range of precision bottlebrush polymers and unravels the impact of side-chain topology on their macroscopic properties. Precise control over side chains opens a pathway for tailoring polymer properties without changing their chemical makeup.

KW - discrete bottlebrushes

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KW - glass transition temperature

KW - polymerization kinetics

KW - precision bottlebrush polymers

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Topologically Precise and Discrete Bottlebrush Polymers: Synthesis, Characterization, and Structure-Property Relationships

Abstract

Funding

Keywords

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