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Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials./
作者:	Versaw, Brooke Ann.
面頁冊數:	1 online resource (179 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-06, Section: B.
Contained By:	Dissertations Abstracts International85-06B.
標題:	Chemistry. -
電子資源:	click for full text (PQDT)
ISBN:	9798380870245

Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials.
Versaw, Brooke Ann.

Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials. - 1 online resource (179 pages)

Source: Dissertations Abstracts International, Volume: 85-06, Section: B.

Thesis (Ph.D.)--California Institute of Technology, 2023.

Includes bibliographical references

Connecting a polymer's reactivity or properties to its working environment is a grand challenge in polymer chemistry. Research towards this goal is driven both by a fundamental interest in mimicking nature's ability to create surfaces that adapt to their surroundings and a practical desire to tailor the properties of materials to the wide-ranging contexts where they find use. This thesis investigates the development of polymers that exhibit productive changes in physical properties or chemical reactivity under an applied environmental stimulus.Section I explores polymers responsive to external force. In Chapter 1, we describe the development of substituted naphthopyran mechanophores that exhibit highly tunable coloration and thermal electrocyclization kinetics following mechanical activation. Structure-mechanochemical activity relationships are first established, then applied to create elastomeric materials capable of complex multicolor or multimodal stress-sensing responses. In Chapter 2, we summarize recent developments in the rapidly growing research area of mechanically triggered molecular release. We highlight advances in both specialized and general mechanophore platforms for mechanically triggered release, introduce potential applications, and outline the knowledge gaps that will define the future of this emerging field. In Section II, we focus on polymers responsive to applied heat. Chapter 3 examines the use of masked furfuryl esters as thermally latent protecting groups for carboxylic acid-functionalized polymers. Judiciously designed masked furfuryl esters were incorporated into poly(methyl acrylate)s as functional initiators or comonomers. Subsequent thermal deprotection proceeded efficiently to afford α,ω-telechelic poly(methyl acrylate) and poly(methyl acrylate-co-acrylic acid). The relatively mild conditions required for post-polymerization modification are particularly appealing for systems that contain other labile groups and will improve the synthetic accessibility of these functional materials.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380870245Subjects--Topical Terms:

593913
Chemistry.
Subjects--Index Terms:

Polymers responsiveIndex Terms--Genre/Form:

554714
Electronic books.

Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials.
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