國立虎尾科技大學 |

Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials./
Author:	Versaw, Brooke Ann.
Description:	1 online resource (179 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-06, Section: B.
Contained By:	Dissertations Abstracts International85-06B.
Subject:	Chemistry. -
Online resource:	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.
LDR:03490ntm a22003977 4500 001 1151882
005 20241118135854.5
006 m o d
007 cr mn ---uuuuu
008 250605s2023 xx obm 000 0 eng d
020 $a 9798380870245
035 $a (MiAaPQ)AAI30961787
035 $a (MiAaPQ)Caltech_oaithesislibrarycaltechedu15146
035 $a AAI30961787
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Versaw, Brooke Ann. $3 1478722
245 1 0 $a Thermally and Mechanically Responsive Platforms for Functional Polymeric Materials.
264 0 $c 2023
300 $a 1 online resource (179 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-06, Section: B.
500 $a Advisor: Robb, Maxwell.
502 $a Thesis (Ph.D.)--California Institute of Technology, 2023.
504 $a Includes bibliographical references
520 $a 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.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Chemistry. $3 593913
650 4 $a Materials science. $3 557839
650 4 $a Polymer chemistry. $3 1182163
653 $a Polymers responsive
653 $a Functional materials
653 $a Naphthopyran mechanophores
653 $a Furfuryl esters
655 7 $a Electronic books. $2 local $3 554714
690 $a 0794
690 $a 0495
690 $a 0485
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a California Institute of Technology. $b Chemistry and Chemical Engineering. $3 1464811
773 0 $t Dissertations Abstracts International $g 85-06B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30961787 $z click for full text (PQDT)