Copper ESEEM and HYSCORE through ultra-wideband chirp EPR spectroscopy.
Copper ESEEM and HYSCORE through ultra-wideband chirp EPR spectroscopy.
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通过超宽带线性调频 EPR 光谱分析铜 ESEEM 和 HYSCORE。
DOI：
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发表时间：
2015
影响因子：
4.4
通讯作者：
G. Jeschke
中科院分区：
文献类型：
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作者：
T. Segawa;A. Doll;Stephan Pribitzer;G. Jeschke
脉冲电子顺磁共振(EPR)谱的主要缺点是激发带宽较窄。超宽带(UWB)激励用几百兆赫的扫频啁啾脉冲克服了这一缺点。这使得可以从晶体中的顺磁性铜中心激发电子自旋回波包络调制(ESEEM)，而到目前为止，只有较低频率的质子或氮等配体核的ESEEM才能被检测到。ESEEM谱被记录为二维相关实验，因为电子自旋回波的完全数字化提供了额外的傅里叶变换EPR维度。因此，超宽带超精细-亚能级相关实验产生了一种新的三维EPR相关核调制谱。
The main limitation of pulse electron paramagnetic resonance (EPR) spectroscopy is its narrow excitation bandwidth. Ultra-wideband (UWB) excitation with frequency-swept chirp pulses over several hundreds of megahertz overcomes this drawback. This allows to excite electron spin echo envelope modulation (ESEEM) from paramagnetic copper centers in crystals, whereas up to now, only ESEEM of ligand nuclei like protons or nitrogens at lower frequencies could be detected. ESEEM spectra are recorded as two-dimensional correlation experiments, since the full digitization of the electron spin echo provides an additional Fourier transform EPR dimension. Thus, UWB hyperfine-sublevel correlation experiments generate a novel three-dimensional EPR-correlated nuclear modulation spectrum.
EPR 中的宽带自旋回波和宽带 SIFTER
影响因子：
2.2
作者：
Schöps;Spindler;Prisner
通讯作者：
Prisner