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Morphological Characterization of Conjugated Polymer Blends in Solid and Solution States Using Small Angle Scattering
Morphological Characterization of Conjugated Polymer Blends in Solid and Solution States Using Small Angle Scattering
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211150936
- ISBN
- 9798382215150
- DDC
- 547
- 서명/저자
- Morphological Characterization of Conjugated Polymer Blends in Solid and Solution States Using Small Angle Scattering
- 발행사항
- [Sl] : University of Washington, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 214 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-10, Section: B.
- 주기사항
- Advisor: Pozzo, Lilo D.
- 학위논문주기
- Thesis (Ph.D.)--University of Washington, 2024.
- 초록/해제
- 요약Conjugated polymers (CPs) are a subset of polymers with unique electronic properties and are found in the active layers of organic electronic devices, such as organic photovoltaics (OPVs), organic field-effect transistors (OFETs), organic LED's (OLEDs), and bioelectronics. In pure forms, CPs are often brittle and prone to environmental degradation, so to improve the durability and mechanical properties of organic electronics, CPs are often blended with mechanically favorable matrix polymers. The blending process often involves the application of heat, pressure, or solvents, and these processing variables can affect how the materials interact with each other. This, in turn, can affect the properties of the final product. A fundamental understanding of the morphology of conjugated polymer blends and how processing affects them is required to develop and optimize materials. In this work, we utilize neutron and X-ray scattering techniques to determine the morphology of complex CP blends in both solution and solid states, under a variety of processing and sample conditions. We first explore a heat pressed elastomeric CP blend and determine how the phase structures of the matrix elastomer change and distort with the addition of a conjugated polymer. We also investigate how the heat pressing method, including variables such as solvent choice, pressing time, and pressing temperature, affect the structure and phases of the blended material. We continue our morphological characterization of complex blended systems with a high χ parameter copolymer and conjugated polymer in solution. This type of system has been proposed for use in Organic Mixed Ionic and Electronic Conductors (OMIECs), but a fundamental understanding of the structure of the system is required before optimization of desired properties is possible. We begin with solution-state analysis of the self-assembling high χ parameter copolymer and track the structural changes that result from polymer architecture and solvent quality. With an understanding of the structure of the matrix, we further identify how the addition of the conjugated polymer modifies the structure and extent of assembly in solution. Throughout these works, we emphasize the need to understand the morphology of complex CPs and how choices in materials and processing methods can affect the conformations of these blends.
- 일반주제명
- Polymer chemistry
- 일반주제명
- Chemical engineering
- 일반주제명
- Materials science
- 일반주제명
- Physical chemistry
- 키워드
- Morphology
- 키워드
- X-ray scattering
- 기타저자
- University of Washington Chemical Engineering
- 기본자료저록
- Dissertations Abstracts International. 85-10B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211150936
■006m o d
■007cr#unu||||||||
■020 ▼a9798382215150
■035 ▼a(MiAaPQ)AAI30990852
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a547
■1001 ▼aScheiwiller, Sage Charlie.
■24510▼aMorphological Characterization of Conjugated Polymer Blends in Solid and Solution States Using Small Angle Scattering
■260 ▼a[Sl]▼bUniversity of Washington▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a214 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-10, Section: B.
■500 ▼aAdvisor: Pozzo, Lilo D.
■5021 ▼aThesis (Ph.D.)--University of Washington, 2024.
■520 ▼aConjugated polymers (CPs) are a subset of polymers with unique electronic properties and are found in the active layers of organic electronic devices, such as organic photovoltaics (OPVs), organic field-effect transistors (OFETs), organic LED's (OLEDs), and bioelectronics. In pure forms, CPs are often brittle and prone to environmental degradation, so to improve the durability and mechanical properties of organic electronics, CPs are often blended with mechanically favorable matrix polymers. The blending process often involves the application of heat, pressure, or solvents, and these processing variables can affect how the materials interact with each other. This, in turn, can affect the properties of the final product. A fundamental understanding of the morphology of conjugated polymer blends and how processing affects them is required to develop and optimize materials. In this work, we utilize neutron and X-ray scattering techniques to determine the morphology of complex CP blends in both solution and solid states, under a variety of processing and sample conditions. We first explore a heat pressed elastomeric CP blend and determine how the phase structures of the matrix elastomer change and distort with the addition of a conjugated polymer. We also investigate how the heat pressing method, including variables such as solvent choice, pressing time, and pressing temperature, affect the structure and phases of the blended material. We continue our morphological characterization of complex blended systems with a high χ parameter copolymer and conjugated polymer in solution. This type of system has been proposed for use in Organic Mixed Ionic and Electronic Conductors (OMIECs), but a fundamental understanding of the structure of the system is required before optimization of desired properties is possible. We begin with solution-state analysis of the self-assembling high χ parameter copolymer and track the structural changes that result from polymer architecture and solvent quality. With an understanding of the structure of the matrix, we further identify how the addition of the conjugated polymer modifies the structure and extent of assembly in solution. Throughout these works, we emphasize the need to understand the morphology of complex CPs and how choices in materials and processing methods can affect the conformations of these blends.
■590 ▼aSchool code: 0250.
■650 4▼aPolymer chemistry
■650 4▼aChemical engineering
■650 4▼aMaterials science
■650 4▼aPhysical chemistry
■653 ▼aConjugated polymer blends
■653 ▼aConjugated polymers
■653 ▼aMorphology
■653 ▼aX-ray scattering
■653 ▼aOrganic field-effect transistors
■690 ▼a0495
■690 ▼a0542
■690 ▼a0794
■690 ▼a0494
■71020▼aUniversity of Washington▼bChemical Engineering.
■7730 ▼tDissertations Abstracts International▼g85-10B.
■790 ▼a0250
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160217▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
