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首页> 外文期刊>Chemistry: A European journal >A 'single-sample concept' (SSC): A new approach to the combinatorial chemistry of inorganic materials
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A 'single-sample concept' (SSC): A new approach to the combinatorial chemistry of inorganic materials

机译：“单一样品概念”（SSC）：无机材料组合化学的新方法

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摘要

Combinatorial estimations show that, within an unreacted ceramic sample prepared by mixing N different starting materials MxOy with average particle size similar to1 mum, there are about 10(12) grains per cubic centimeter, sufficient for local reactions to occur that may produce a larger number of product oxides than presently accessible by 2D plate techniques. The "single-sample concept" (SSC) is proposed for performing property-directed syntheses for the preparation of ferri-/ferromagnetic or superconducting compounds. Because of the magnetic properties of the products, libraries of product grains can be sorted by means of magnetic separation techniques. For materials with a large magnetization, the separation efficiency is so high that traces of products can be isolated. The SSC concept was tested experimentally to prepare Fe-based oxides (N = 17, 24, 30). The large yields ( < 75 wt%, N = 17) of product grains agree with the literature data, which indicate that 3d metal magnetic oxide phases (T-c > 300 K) are most probably Fe oxides. In combination with magnetic separation techniques, SSC seems particularly adapted for exploring the solid-state chemistry of metallic lead elements that form ferri-/ferromagnetic or superconducting oxide phases difficult to detect systematically within the large phase space of theoretically existing compounds.
机译：组合估计显示，在通过混合N种平均粒径类似于1微米的N种不同起始原料MxOy制备的未反应陶瓷样品中，每立方厘米大约有10（12）个晶粒，足以发生可能产生更多数量的局部反应产品氧化物的数量比目前2D平板技术可及的多。提出了“单一样品概念”（SSC），用于进行性质导向的合成，以制备亚铁/铁磁或超导化合物。由于产品的磁性，可以通过磁分离技术对产品颗粒库进行分类。对于具有较大磁化强度的材料，分离效率很高，因此可以隔离痕量产品。对SSC概念进行了实验测试以制备铁基氧化物（N = 17、24、30）。产品晶粒的大产率（<75 wt％，N = 17）与文献数据相符，这表明3d金属磁性氧化物相（T-c> 300 K）很可能是Fe氧化物。结合磁分离技术，SSC似乎特别适用于探索形成在理论上存在的化合物的大相空间内难以系统检测的亚铁/铁磁或超导氧化物相的金属铅元素的固态化学。

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