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Development of Functional Enyne Molecules to Control Degradability and Architecture in Metathesis Polymers
Development of Functional Enyne Molecules to Control Degradability and Architecture in Met...
Development of Functional Enyne Molecules to Control Degradability and Architecture in Metathesis Polymers

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자료유형  
 학위논문 서양
최종처리일시  
20260202105325
ISBN  
9798263325121
DDC  
600
저자명  
Sui, Xuelin.
서명/저자  
Development of Functional Enyne Molecules to Control Degradability and Architecture in Metathesis Polymers
발행사항  
[Sl] : Georgia Institute of Technology, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
242 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Gutekunst, Will R.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
초록/해제  
요약Cascade metathesis reactions using Grubbs-catalysts are intramolecular reorganization reactions between two unsaturated bonds to produce a conjugated 1,3-diene or triene. This cascade relay metathesis process that occurs among adjacent unsaturated bonds has driven new insights into the preparation of polymers with diverse side groups, telechelic structures, and degradability. However, the usage of this efficient cascade metathesis has not been well-studied with respect to other aspects of metathesis polymerization. The research reported in this thesis explores the design and application of various functional enyne reagents to mediate polymer degradation, ruthenium metal residue removal, and cyclic topology control of metathesis polymerization. The unique reactivity of a terminal alkyne towards ruthenium Fisher carbenes makes it a directing group to promote selective and rapid transfer reactions intramolecularly. Utilizing this unexpected metathesis reaction, different enyne molecules (Chapter 2) or diyne molecules (Chapter 3) are shown to copolymerize with cyclic enol ethers with low strain energy to give degradable alternating copolymers. Additionally, a fluorous enyne molecule is able to efficiently terminate the ruthenium active chain-end in common ROMP polymers to facilitate ruthenium removal via straightforward sequestration methods (Chapter 4). In addition, the enyne derivatives can be utilized to give cyclic Grubbs-type initiators to afford cyclic macromolecular structures through ring-expansion metathesis polymerization (REMP) (Chapter 5). Overall, functional enyne reagents and monomers demonstrate significant versatility in the manipulation of macromolecular reactivity and topology to extend the potential applications of metathesis polymerization.
일반주제명  
Polymers
일반주제명  
Mass spectrometry
일반주제명  
Polyesters
일반주제명  
Acids
일반주제명  
Viscosity
일반주제명  
Nuclear magnetic resonance--NMR
일반주제명  
Carbon
일반주제명  
Polymerization
일반주제명  
Copolymers
일반주제명  
Design
일반주제명  
Phosphate esters
일반주제명  
Molecular weight
일반주제명  
Scientific imaging
일반주제명  
Chromatography
일반주제명  
Chemists
일반주제명  
Entropy
일반주제명  
Polyolefins
일반주제명  
Analytical chemistry
일반주제명  
Medical imaging
일반주제명  
Polymer chemistry
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aSui,  Xuelin.
■24510▼aDevelopment  of  Functional  Enyne  Molecules  to  Control  Degradability  and  Architecture  in  Metathesis  Polymers
■260    ▼a[Sl]▼bGeorgia  Institute  of  Technology▼c2023
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2023
■300    ▼a242  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Gutekunst,  Will  R.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2023.
■520    ▼aCascade  metathesis  reactions  using  Grubbs-catalysts  are  intramolecular  reorganization  reactions  between  two  unsaturated  bonds  to  produce  a  conjugated  1,3-diene  or  triene.  This  cascade  relay  metathesis  process  that  occurs  among  adjacent  unsaturated  bonds  has  driven  new  insights  into  the  preparation  of  polymers  with  diverse  side  groups,  telechelic  structures,  and  degradability.  However,  the  usage  of  this  efficient  cascade  metathesis  has  not  been  well-studied  with  respect  to  other  aspects  of  metathesis  polymerization.  The  research  reported  in  this  thesis  explores  the  design  and  application  of  various  functional  enyne  reagents  to  mediate  polymer  degradation,  ruthenium  metal  residue  removal,  and  cyclic  topology  control  of  metathesis  polymerization.  The  unique  reactivity  of  a  terminal  alkyne  towards  ruthenium  Fisher  carbenes  makes  it  a  directing  group  to  promote  selective  and  rapid  transfer  reactions  intramolecularly.  Utilizing  this  unexpected  metathesis  reaction,  different  enyne  molecules  (Chapter  2)  or  diyne  molecules  (Chapter  3)  are  shown  to  copolymerize  with  cyclic  enol  ethers  with  low  strain  energy  to  give  degradable  alternating  copolymers.  Additionally,  a  fluorous  enyne  molecule  is  able  to  efficiently  terminate  the  ruthenium  active  chain-end  in  common  ROMP  polymers  to  facilitate  ruthenium  removal  via  straightforward  sequestration  methods  (Chapter  4).  In  addition,  the  enyne  derivatives  can  be  utilized  to  give  cyclic  Grubbs-type  initiators  to  afford  cyclic  macromolecular  structures  through  ring-expansion  metathesis  polymerization  (REMP)  (Chapter  5).  Overall,  functional  enyne  reagents  and  monomers  demonstrate  significant  versatility  in  the  manipulation  of  macromolecular  reactivity  and  topology  to  extend  the  potential  applications  of  metathesis  polymerization.
■590    ▼aSchool  code:  0078.
■650  4▼aPolymers
■650  4▼aMass  spectrometry
■650  4▼aPolyesters
■650  4▼aAcids
■650  4▼aViscosity
■650  4▼aNuclear  magnetic  resonance--NMR
■650  4▼aCarbon
■650  4▼aPolymerization
■650  4▼aCopolymers
■650  4▼aDesign
■650  4▼aPhosphate  esters
■650  4▼aMolecular  weight
■650  4▼aScientific  imaging
■650  4▼aChromatography
■650  4▼aChemists
■650  4▼aEntropy
■650  4▼aPolyolefins
■650  4▼aAnalytical  chemistry
■650  4▼aMedical  imaging
■650  4▼aPolymer  chemistry
■690    ▼a0389
■690    ▼a0486
■690    ▼a0574
■690    ▼a0495
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360235▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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