Assembly of Low-Cost FTNMR Spectrometer for Undergraduate Instruction

小行星9451570 该提案是为组装一个200兆赫核磁共振波谱仪的本科教学从退役的光谱仪。我们建议仅使用低水平射频部分和旧系统的磁体。该转换包括一个最先进的基于PC的计算机，外设，定时部分和脉冲编程器。其结果将是一个高场光谱仪，这将是经常使用的许多本科课程。在洛约拉大学，我们将改变我们的教学方法，从其中动手NMR光谱学在开始的有机课程中几乎不存在，到其中高场光谱仪在课程中起着常规和不可分割的一部分，将采集与处理分离，从而使一小时的实验室中有可能有25个学生光谱。在仪器分析中，学生将了解时域和频域数据之间的转换。 他们将深入了解实验参数的最佳控制与仪器设计相关的方式。 我们希望我们的本科生在使用NMR光谱学方面变得更加复杂，这样他们的本科研究将得到显着丰富，并使他们为未来的化学职业做好更好的准备。我们建议，从现有的商业模块组装一个NMR光谱仪本科教学是很有可能的，以及有能力的光谱学家（NMR或不）或仪器分析讲师的能力。我们将证明，一个光谱仪可以获得成本远低于10万美元。10年前（完全可用）的4.7T磁铁（200 Mhz 1H）将从旧仪器退役中获得，价格（15 - 35 K美元）取决于可用性，额外费用和需求。一个非常有用的教学工具是可能的。

9451570 Jameson This proposal is for the assembly of a 200 MHz NMR spectrometer for undergraduate instruction from a decommissioned spectrometer. We propose to utilize only the low-level rf section and the magnet from older systems. The transformation includes a state of the art PC based computer, peripherals, timing section, and pulse programmer. The result will be a high-field spectrometer which will be routinely used in many undergraduate courses. At Loyola University we will transform our pedagogy from one in which hands-on NMR spectroscopy is almost non-existent in the beginning Organic courses into one in which a high-field spectrometer plays a routine and integral part of the course, separating acquisition from processing, thereby making possible 25 student spectra in one hour of laboratory. In Instrumental Analysis the students will understand the conversion between time and frequency domain data. They will delve into understanding the manner in which optimal control of experimental parameters is related to instrument design. We wish to have our undergraduate students become more sophisticated in the use of NMR spectroscopy so that their undergraduate research will be significantly enriched, and make them better prepared for their future chemistry careers. We suggest that assembling an NMR spectrometer for undergraduate instruction from existing commercial modules is quite possible, well within the competence of capable spectroscopists (NMR or not) or Instrumental Analysis instructor. We will demonstrate that a spectrometer can be obtained for a cost well below $100,000. Ten year old (entirely serviceable) 4.7T magnets (200 Mhz 1H) are becoming available from the decommissioning of older instruments, prices ($15-35K) depending on availability, extras and demand. An extremely useful instructional tool is possible.