PROVIDING ON-SITE TRAINING IN DQC SPECTROSCOPY

这个子项目是许多利用资源的研究子项目之一 由NIH/NCRR资助的中心拨款提供。子项目的主要支持 而子项目的主要调查员可能是由其他来源提供的， 包括其它NIH来源。 列出的子项目总成本可能 代表子项目使用的中心基础设施的估计数量， 而不是由NCRR赠款提供给子项目或子项目工作人员的直接资金。 双量子相干ESR光谱学是在ACERT创建并发展成为一项最先进的技术;然而，它最终由布鲁克公司在商业光谱仪中实施，并可供购买它们的研究实验室使用。 在我们手中，这种技术提供了更宽的距离范围，在许多重要的情况下，与常用的DEER相比，具有上级灵敏度。ACERT的Ku波段DQC的灵敏度超过商用光谱仪中DEER的灵敏度一个数量级以上。这部分是由于ACERT PDS光谱仪的独特性，但即使是在X波段工作的商业光谱仪也可以从使用这种技术中受益。 此外，该技术在ACERT以2D格式实施，其在单个实验中提供关于方向的信息。 然而，使用DQC确实需要一定程度的专业知识，ACERT将随时向相关方提供。 最近，韦恩哈贝尔的博士后研究员杨忠宇博士访问了ACERT几天，在那里他参与了对他的样品进行DQC光谱分析，该样品的ESR光谱对于DEER来说太窄了。 在他的样品上已经成功地演示了调整和运行DQC脉冲序列的所有方面，Freed博士向受训者提供了有关该技术的几个重要见解。 我们希望这次培训课程将有助于促进Hubbell实验室中DQC的常规使用。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Double-quantum coherence ESR spectroscopy was created and developed at ACERT into a state-of-the-art technique; however it was eventually implemented by Bruker in commercial spectrometers and is available to the research labs that have purchased them. In our hands this technique provides a wider distance range and in many important cases superior sensitivity compared to commonly-used DEER. The sensitivity of DQC at Ku band at ACERT exceeds the sensitivity of DEER in commercial spectrometers by more than an order of magnitude. In part this is due to the uniqueness of ACERT PDS spectrometers, but even with commercial spectrometers operating at X-band one can benefit from using this technique. Also, the technique was implemented at ACERT in 2D format, which provides information on orientations in a single experiment. However, using DQC does require a certain level of expertise, which ACERT will readily provide to the interested parties. Recently, a Postdoctoral associate of Wayne Hubbell, Dr. Yang, Zhongyu, has visited ACERT for several days, where he was participating in conducting DQC spectroscopy on his sample that had ESR spectrum far too narrow for DEER. All aspects of tuning and running DQC pulse sequence have been successfully demonstrated on his samples and Dr. Freed provided several important insights into the technique to the trainee. We hope that this training session would help stimulate a routine use of DQC in Hubbell's lab.