Magnetization of Yeast by Labeling with Iron Complexes: An Undergraduate Laboratory Experiment

Magnetization of Yeast by Labeling with Iron Complexes: An Undergraduate Laboratory Experiment
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通过铁络合物标记磁化酵母:本科生实验室实验

DOI:
10.1021/acs.jchemed.2c00791
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发表时间:
2022
影响因子:
3
通讯作者:
Morrow, Janet R.
Morrow, Janet R.
中科院分区:
化学2区
文献类型:
--
作者:
Pinti, John C.;Kras, Elizabeth A.;Patel, Akanksha;Schrier, Chloe L.;Stoj, Christopher S.;Morrow, Janet R.

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这个本科实验室实验是专为一年级的普通化学学生,其目标是在生物无机/细胞生物学背景下介绍过渡金属络合物的鲜艳颜色和磁性。在第一个实验室阶段,制备由氯化铁和麦芽酚形成的配位络合物(Fe(麦芽酚)3)。记录了配合物的深红色,并比较了配体和配合物的紫外-可见光谱。将酵母细胞与氯化铁和Fe(麦芽酚)3孵育。在第二个实验阶段,分离用氯化铁或Fe(麦芽酚)3处理的酵母细胞,并将其放置在环形磁体上,以研究酵母是否具有顺磁性。酵母活力的研究进行比较铁(麦芽酚)3和FeCl 3的毒性。要求学生预测不同自旋和氧化态的铁络合物的磁性,并考虑铁摄入酵母细胞的基础。
This undergraduate laboratory experiment is designed for first-year general chemistry students with the goal of introducing the brilliant colors and magnetic properties of transition metal complexes within a bioinorganic/cell biology context. In the first laboratory period, a coordination complex formed from ferric chloride and maltol is prepared (Fe(maltol)3). The intense red color of the complex is noted, and the UV–vis spectra of the ligand and complex are compared. Yeast cells are incubated with ferric chloride and with Fe(maltol)3. In the second laboratory period, the yeast cells treated with the ferric chloride or Fe(maltol)3are isolated and placed over ring magnets to study whether the yeast have paramagnetic properties. Yeast viability studies are done to compare the toxicity of Fe(maltol)3and FeCl3. Students are asked to predict the magnetic properties of iron complexes of different spin and oxidation states and to consider the basis for iron uptake into yeast cells.
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