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Complexation and Photophysical Phenomena in Multi-Component Organic Semiconductor Materials Systems
Complexation and Photophysical Phenomena in Multi-Component Organic Semiconductor Materials Systems
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152034
- ISBN
- 9798384463849
- DDC
- 539
- 서명/저자
- Complexation and Photophysical Phenomena in Multi-Component Organic Semiconductor Materials Systems
- 발행사항
- [Sl] : Princeton University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 185 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-04, Section: B.
- 주기사항
- Advisor: Loo, Yueh-Lin.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2024.
- 초록/해제
- 요약Organic semiconductors are promising materials due to their tunable optical properties, facile processing, and mechanical flexibility. Advancing their applications requires a deeper understanding of organic semiconductors, particularly how intermolecular interactions can be manipulated to achieve selective complexation. Improving our understanding of organic semiconductor phosphorescence, an uncommon photophysical process of organic semiconductors, is also essential. Multi-component organic semiconductor systems are useful for such investigations. In exploring fullerene-buckybowl solution complexation, we identify extending buckybowl π-surfaces strengthens buckybowl-fullerene complexation. We find stronger complexation with fullerenes when the buckybowl dipole moment is increased through heteroatom inclusion.We investigate second-scale room temperature phosphorescence of organic semiconductors, a phenomenon known as ultralong room temperature phosphorescence (URTP). URTP is generally rare due to quenching by nonradiative recombination processes. We enable URTP in various organic semiconductors by embedding them in rigid polymer hosts and thermally annealing to induce sub-micron aggregation. We deduce sub-micron organic semiconductor aggregates suppress nonradiative recombination and reduce diffusional exciton quenching, and we propose URTP is more ubiquitous than previously thought.We find contorted hexabenzocoronene (cHBC) exhibits uniquely efficient red URTP. This stems from the proximity of a higher-lying triplet to the lowest-lying singlet enhancing intersystem crossing, and comparatively slow fluorescence decay. Eliminating C-H stretching modes, which disproportionately contribute to nonradiative recombination, by perdeuterating cHBC significantly prolongs its URTP lifetime, generating the longest-lived organic red-emitter to our knowledge. We developed a melt-processable perdeuterated cHBC and rubbery polymer composite that is compatible with 3D printing, enabling the development of customizable phosphorescent objects.We demonstrate ubiquitous access to URTP in nanoparticles comprising an organic semiconductor, homopolymer, and surfactant stabilizer made by flash nanoprecipitation (FNP). FNP offers precise control over nanoparticle size and composition. The URTP lifetime of the nanoparticle dispersions is stable to drying and redispersion. Moreover, this nanoparticle form factor is extendable to formulating anti-counterfeiting inks, or bioimaging.This thesis highlights the use of multi-component organic semiconductor systems to better understand the intermolecular interactions and photophysical phenomena governing their behavior. Using this insight, we realize unique properties of organic semiconductors that contribute to generating materials that can fit new applications.
- 일반주제명
- Molecular physics
- 일반주제명
- Organic chemistry
- 일반주제명
- Molecular chemistry
- 키워드
- Aggregation
- 키워드
- Buckybowls
- 키워드
- Nanoparticles
- 키워드
- Photophysics
- 기타저자
- Princeton University Chemical and Biological Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-04B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211152034
■006m o d
■007cr#unu||||||||
■020 ▼a9798384463849
■035 ▼a(MiAaPQ)AAI31335141
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a539
■1001 ▼aIvancevic, Marko R.▼0(orcid)0000-0001-6308-5978
■24510▼aComplexation and Photophysical Phenomena in Multi-Component Organic Semiconductor Materials Systems
■260 ▼a[Sl]▼bPrinceton University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a185 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-04, Section: B.
■500 ▼aAdvisor: Loo, Yueh-Lin.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2024.
■520 ▼aOrganic semiconductors are promising materials due to their tunable optical properties, facile processing, and mechanical flexibility. Advancing their applications requires a deeper understanding of organic semiconductors, particularly how intermolecular interactions can be manipulated to achieve selective complexation. Improving our understanding of organic semiconductor phosphorescence, an uncommon photophysical process of organic semiconductors, is also essential. Multi-component organic semiconductor systems are useful for such investigations. In exploring fullerene-buckybowl solution complexation, we identify extending buckybowl π-surfaces strengthens buckybowl-fullerene complexation. We find stronger complexation with fullerenes when the buckybowl dipole moment is increased through heteroatom inclusion.We investigate second-scale room temperature phosphorescence of organic semiconductors, a phenomenon known as ultralong room temperature phosphorescence (URTP). URTP is generally rare due to quenching by nonradiative recombination processes. We enable URTP in various organic semiconductors by embedding them in rigid polymer hosts and thermally annealing to induce sub-micron aggregation. We deduce sub-micron organic semiconductor aggregates suppress nonradiative recombination and reduce diffusional exciton quenching, and we propose URTP is more ubiquitous than previously thought.We find contorted hexabenzocoronene (cHBC) exhibits uniquely efficient red URTP. This stems from the proximity of a higher-lying triplet to the lowest-lying singlet enhancing intersystem crossing, and comparatively slow fluorescence decay. Eliminating C-H stretching modes, which disproportionately contribute to nonradiative recombination, by perdeuterating cHBC significantly prolongs its URTP lifetime, generating the longest-lived organic red-emitter to our knowledge. We developed a melt-processable perdeuterated cHBC and rubbery polymer composite that is compatible with 3D printing, enabling the development of customizable phosphorescent objects.We demonstrate ubiquitous access to URTP in nanoparticles comprising an organic semiconductor, homopolymer, and surfactant stabilizer made by flash nanoprecipitation (FNP). FNP offers precise control over nanoparticle size and composition. The URTP lifetime of the nanoparticle dispersions is stable to drying and redispersion. Moreover, this nanoparticle form factor is extendable to formulating anti-counterfeiting inks, or bioimaging.This thesis highlights the use of multi-component organic semiconductor systems to better understand the intermolecular interactions and photophysical phenomena governing their behavior. Using this insight, we realize unique properties of organic semiconductors that contribute to generating materials that can fit new applications.
■590 ▼aSchool code: 0181.
■650 4▼aMolecular physics
■650 4▼aOrganic chemistry
■650 4▼aMolecular chemistry
■653 ▼aAggregation
■653 ▼aBuckybowls
■653 ▼aNanoparticles
■653 ▼aOrganic semiconductors
■653 ▼aPhotophysics
■690 ▼a0609
■690 ▼a0490
■690 ▼a0431
■71020▼aPrinceton University▼bChemical and Biological Engineering.
■7730 ▼tDissertations Abstracts International▼g86-04B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162626▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
