UTILITY TO DEVELOP SINGLE CRYSTAL W BAND EPR SPECTROMETRY AMETHYST
UTILITY TO DEVELOP SINGLE CRYSTAL W BAND EPR SPECTROMETRY AMETHYST
批准号:
6120675
负责人:
John A Weil
金额:
$0.54万
依托单位国家:
美国
项目类别:
财政年份:
1998
资助国家:
美国
项目状态:
已结题
起止时间:
1998-04-15 至 1999-11-30
中文摘要
紫水晶单晶铁离子研究项目,
特别是检测/发现Fe(2+)和Fe(4+)共振。 1)线
为所有的94.1 GHz EPR谱制作了位置角路线图
已知的Fe(3+)中心 - 石英,使用先前测量的9.5 GHz
谱 这些都是作为指导方针必不可少的W波段
工作 2)主要成功的开发工作(月)完成,
(学习)生产0.7mm直径的圆柱体,
紫水晶 3)室温下的初步W带光谱
显示存在几个Fe(3+)中心,加上一些尚未
不明中心。 我们寻求获得使用W波段的经验
光谱检测和研究Fe(4+),并将此经验
金属蛋白中Fe(+4)位点的表征。 这是
一个正在进行的项目。
英文摘要
Project to study iron ions in amethyst single crystals,
especially to detect/discover Fe(2+) and Fe(4+) resonances. 1) Line
position angle roadmaps for 94.1 GHz EPR spectra were produced for all
known Fe(3+) centres in -quartz, using 9.5 GHz previously measured
spectra. These are serving as guidelines essential for the W-band
work. 2) Major successful development work (months) was done to
(learn to) produce 0.7mm diameter cylinders of carefully oriented
amethyst crystals. 3) Preliminary W-band spectra at room temperature
showed presence of several Fe(3+) centres, plus some as-yet
unidentified centres. We seek to gain experience on use of W-band
spectroscopy to detect and study Fe(4+) and transfer this experience
to the characterization of Fe(+4) sites in metalloproteins. This is
an ongoing project.
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UTILITY TO DEVELOP SINGLE CRYSTAL W BAND EPR SPECTROMETRY B DICOBALT DIOXYGEN
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批准号:6120682
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项目类别:
-
资助金额:$0.16万
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财政年份:1998
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负责人:John A Weil
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依托单位:
UTILITY TO DEVELOP SINGLE CRYSTAL W BAND EPR SPECTROMETRY: AMETHYST
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批准号:6251802
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项目类别:
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资助金额:$0.42万
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财政年份:1997
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负责人:John A Weil
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依托单位:
UTILITY TO DEVELOP SINGLE CRYSTAL W BAND EPR SPECTROMETRY: B DICOBALT DIOXYGEN
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批准号:6251809
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项目类别:
-
资助金额:$0.42万
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财政年份:1997
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负责人:John A Weil
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依托单位:
海外基金