Temperature Determination by EPR at 275 GHz and the Detection of Temperature Jumps in Aqueous Samples.

Temperature Determination by EPR at 275 GHz and the Detection of Temperature Jumps in Aqueous Samples.
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在 275 GHz 下通过 EPR 测定温度并检测水样中的温度跳跃。

DOI:
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发表时间:
2015
影响因子:
3.3
通讯作者:
E. Groenen
E. Groenen
中科院分区:
化学3区
文献类型:
--
作者:
M. Azarkh;E. Groenen

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氮氧化物连续波EPR谱的二维二阶矩分析使EPR测温能够在较宽的温度范围内进行。模拟结果表明,在慢动区和快动区都可以得到温度,在275 GHz下对水/甘油(体积分数为50/50%)和纯水进行了实验验证。我们证明,该工具可以在275 GHz光谱仪的单模腔中校准红外激光照射亚微升样品引起的温度跳跃,这为顺磁物种过程的动力学研究做好了准备。
Second-moment analysis along two dimensions of continuous-wave EPR spectra of nitroxides enables EPR thermometry in a broad temperature range. Simulations show that the temperature can be derived in both the slow-motion and the fast-motion regime, which is experimentally verified at 275 GHz for H2O/glycerol (50/50% by volume) and pure water. We demonstrate that this tool allows the calibration of temperature jumps induced by infrared laser irradiation of a submicroliter sample in the single-mode cavity of a 275 GHz spectrometer, which prepares for kinetic studies of processes involving paramagnetic species.
DOI: 10.1073/pnas.94.5.1779
发表时间: 1997-03-04
影响因子: 11.1
作者:
Chan, CK;Hu, Y;Hofrichter, J
通讯作者: Hofrichter, J
DOI: 10.1073/pnas.94.8.3709
发表时间: 1997-04-15
影响因子: 11.1
作者:
Gilmanshin, R;Williams, S;Dyer, RB
通讯作者: Dyer, RB