Hetcher, week of May 9

It’s been a very data-driven week thus far. Rather than putting the gloves on in the lab, the data gathered previously on 0.035 molal TbaTf in 1-octanol was copied and transferred for my personal play. We were instructed to use Allison’s template and observe our own results, which was a different sort of experience. It felt like I was dealing with the chemicals, but even more hands-off than using the glovebox. I have to admit that it was not easy to remember every step, but I think I got the hang of it. It took much longer than I originally estimated, though.

Another goal of ours was to explore the “Dipole Density” paper by the OU group, officially titled Molecular and System Parameters Governing Mass and Charge Transport in Polar Liquids and Electrolytes. This article described the connection (proportional) between the dipole density over temperature (N/T) and the dielectric constant (ε). Focusing on primarily the conclusion, since I’m sure Figure 7 and the determination of N will be discussed in our meeting, I have first to wonder about the formatting. The first half of the conclusion reads more like an introduction to mass transport theories, and could conceivably be considered a literature review. This is uncharacteristic of the other papers by Petrowsky and Frech that we’ve read, but rather than detrimental, supplies nicely the background for their final conclusions. They postulate that the dependence of transport properties, along with being temperature-driven, are dependent on the ionic conductivity and volume, i.e. the dipole density. This can again be described by the CAF, albeit a different “version” of it. Eventually stemming from this is the prediction of transport properties by using molecular and system parameters, rather than having to use adjustable fitting ones.


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