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The Study of Elusive Neutrals and Ion Structures by Neutralization-Reionization Mass Spectrometry Methods

The Study of Elusive Neutrals and Ion Structures by Neutralization-Reionization Mass Spectrometry Methods
中和-再电离质谱方法研究难以捉摸的中性子和离子结构
批准号:
9725003
负责人:
Chrys Wesdemiotis
金额:
$29.41万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1998
资助国家:
美国
项目状态:
已结题
起止时间:
1998-02-15 至 2002-01-31

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中文摘要
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英文摘要
The Organic and Macromolecular Chemistry Program supports the studies of Professor Chrys Wesdemiotis on the synthesis of neutral, gas-phase intermediates and their characterization by neutralization-reionization mass spectroscopy. Neutral intermediates, such as carbyne, silanone, amino acid radicals and hypermetalated species, will be prepared from the corresponding mass-selected cations or anions under conditions of endothermic neutralization at low kinetic energy. Ionization energies, proton affinities and heats of formation of these neutral intermediates will be extracted from the measured neutralization endothermicity. The different stabilities and reactivities of amino acids and peptides neutralized by proton attachment will be exploited to distinguish proton binding sites and their relative proton affinities in multi-functional biomolecules. Graduate and undergraduate students carrying out the experiments will be exposed to the construction of the neutralization-reionization mass spectrometer, its application to different chemical systems, and the analysis of the resulting data. With this New award, the Organic and Macromolecular Chemistry Program supports the research and educational activities of Professor Chrys Wesdemiotis of the University of Akron. Professor Wesdemiotis will focus his research on the synthesis and characterization of neutral intermediates that are currently thought to be short-lived intermediates in a number of chemical transformations. A number of intermediates will be prepared in the gas phase and examined under low-energy neutralization conditions in order to obtain long-sought thermodynamic parameters. The educational activities of Professor Wesdemiotis will include the training of undergraduate and graduate students in the theory and applications of neutralization-reionization mass spectroscopy.
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MRI: Acquisition of a MALDI‐ToF Mass Spectrometer to Advance Research and Education in Polymer Science and Engineering
  • 批准号:
    2215940
  • 项目类别:
    Standard Grant
  • 资助金额:
    $52.5万
  • 财政年份:
    2022
  • 负责人:
    Chrys Wesdemiotis
  • 依托单位:
Mass Spectrometry Methods for the Comprehensive Analysis of Emerging Functional Materials
  • 批准号:
    1808115
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $21.9万
  • 财政年份:
    2018
  • 负责人:
    Chrys Wesdemiotis
  • 依托单位:
Multidimensional Mass Spectrometry Methods for the Study of Polymer Structures, Architectures, and Interactions
  • 批准号:
    1308307
  • 项目类别:
    Standard Grant
  • 资助金额:
    $44.0万
  • 财政年份:
    2014
  • 负责人:
    Chrys Wesdemiotis
  • 依托单位:
Mass Spectrometry Methods for the Characterization of Polymer Composition, Structure, and Architecture
  • 批准号:
    1012636
  • 项目类别:
    Standard Grant
  • 资助金额:
    $43.7万
  • 财政年份:
    2010
  • 负责人:
    Chrys Wesdemiotis
  • 依托单位:
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