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Development of Digital Mass Spectrometry Instrumentation for the Advancement of Cryogenic Ion Vibrational Spectroscopy Techniques
Development of Digital Mass Spectrometry Instrumentation for the Advancement of Cryogenic Ion Vibrational Spectroscopy Techniques
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105649
- ISBN
- 9798270246556
- DDC
- 543
- 저자명
- Capek, Grace O.
- 서명/저자
- Development of Digital Mass Spectrometry Instrumentation for the Advancement of Cryogenic Ion Vibrational Spectroscopy Techniques
- 발행사항
- [Sl] : The University of Wisconsin - Madison, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 153 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisor: Garand, Etienne.
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
- 초록/해제
- 요약Cryogenic Ion Vibrational Spectroscopy (CIVS) is a technique which combines the sensitivity and selectivity of mass spectrometry (MS) with the direct structural information gained from infrared (IR) spectroscopy. Messenger-tagged cryogenic complexes are irradiated with an IR laser in the Reflectron time-of-flight (Re-TOF) region of a custom mass spectrometer, and the photodissociation of the ion-tag complex is monitored in order to obtain the IR spectrum. Here, we present an alternative instrument for CIVS where the complexes are irradiated inside of a cryogenic linear quadrupole ion trap driven by radiofrequency (RF) square waves, otherwise known as digital waves.In contrast to traditional CIVS where only one mass-to-charge (m/z) ion packet can be spectroscopically probed in the Reflectron region, this instrument is equipped to perform a multiplexed spectroscopy experiment where multiple m/z species are probed in one laser scan. In the Garand group, we are particularly interested in studying solvation processes in the gas phase by clustering amino acids and small polypeptides with water in cryogenic ion traps. The CIVS technique gives specific insight into how molecular structure changes with solvation. Expanding to a multiplexed spectroscopy workflow will allow for a higher throughput study of these water clusters, where every other m/z cluster is investigated in one experiment.The Cryogenic Digital Linear Ion Trap Mass Spectrometer (CD-LIT-MS) described here is equipped with digital ion trapping (DIT) technology which allows the frequency to be scanned for mass analysis, fixing the amplitude of the RF square waves low to reduce the arcing potential under cryogenic conditions. The frequency and duty cycle of the RF square waves can be adjusted for software-controlled mass filtration and isolation. In addition, a novel square complex waveform has been developed to perform parametric resonant excitation. We demonstrate how this waveform can perform all the typical functions of sinusoidal complex waveforms such as selective m/z elimination or pre-ejection, mass isolation, and MS resolution enhancement. The square parametric excitation technique allows us to precisely eliminate selected m/z and therefore perform the proof-of-concept multiplexed experiment on every other water cluster.
- 일반주제명
- Analytical chemistry
- 일반주제명
- Physical chemistry
- 일반주제명
- Chemistry
- 키워드
- Solvent clusters
- 기타저자
- The University of Wisconsin - Madison Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105649
■006m o d
■007cr#unu||||||||
■020 ▼a9798270246556
■035 ▼a(MiAaPQ)AAI32402397
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a543
■1001 ▼aCapek, Grace O.
■24510▼aDevelopment of Digital Mass Spectrometry Instrumentation for the Advancement of Cryogenic Ion Vibrational Spectroscopy Techniques
■260 ▼a[Sl]▼bThe University of Wisconsin - Madison▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a153 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisor: Garand, Etienne.
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
■520 ▼aCryogenic Ion Vibrational Spectroscopy (CIVS) is a technique which combines the sensitivity and selectivity of mass spectrometry (MS) with the direct structural information gained from infrared (IR) spectroscopy. Messenger-tagged cryogenic complexes are irradiated with an IR laser in the Reflectron time-of-flight (Re-TOF) region of a custom mass spectrometer, and the photodissociation of the ion-tag complex is monitored in order to obtain the IR spectrum. Here, we present an alternative instrument for CIVS where the complexes are irradiated inside of a cryogenic linear quadrupole ion trap driven by radiofrequency (RF) square waves, otherwise known as digital waves.In contrast to traditional CIVS where only one mass-to-charge (m/z) ion packet can be spectroscopically probed in the Reflectron region, this instrument is equipped to perform a multiplexed spectroscopy experiment where multiple m/z species are probed in one laser scan. In the Garand group, we are particularly interested in studying solvation processes in the gas phase by clustering amino acids and small polypeptides with water in cryogenic ion traps. The CIVS technique gives specific insight into how molecular structure changes with solvation. Expanding to a multiplexed spectroscopy workflow will allow for a higher throughput study of these water clusters, where every other m/z cluster is investigated in one experiment.The Cryogenic Digital Linear Ion Trap Mass Spectrometer (CD-LIT-MS) described here is equipped with digital ion trapping (DIT) technology which allows the frequency to be scanned for mass analysis, fixing the amplitude of the RF square waves low to reduce the arcing potential under cryogenic conditions. The frequency and duty cycle of the RF square waves can be adjusted for software-controlled mass filtration and isolation. In addition, a novel square complex waveform has been developed to perform parametric resonant excitation. We demonstrate how this waveform can perform all the typical functions of sinusoidal complex waveforms such as selective m/z elimination or pre-ejection, mass isolation, and MS resolution enhancement. The square parametric excitation technique allows us to precisely eliminate selected m/z and therefore perform the proof-of-concept multiplexed experiment on every other water cluster.
■590 ▼aSchool code: 0262.
■650 4▼aAnalytical chemistry
■650 4▼aPhysical chemistry
■650 4▼aChemistry
■653 ▼aDigital ion trapping
■653 ▼aInfrared spectroscopy
■653 ▼aMass spectrometry
■653 ▼aSolvent clusters
■690 ▼a0486
■690 ▼a0494
■690 ▼a0485
■71020▼aThe University of Wisconsin - Madison▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360995▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


