Tarnishing Silver Metal into Mithrene,Journal of the American Chemical Society

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Tarnishing Silver Metal into Mithrene
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-09-28 , DOI: 10.1021/jacs.8b08878
Brittany Trang ₁ , Matthew Yeung ₁ , Derek C. Popple _{1,

2} , Elyse A. Schriber ₁ , Michael A. Brady _{1,

3} , Tevye R. Kuykendall ₁ , J. Nathan Hohman ₁

Affiliation

Silver metal exposed to the atmosphere corrodes and becomes tarnished as a result of oxidation and precipitation of the metal as an insoluble salt. Tarnish has so poor a reputation that the word itself connotes corruption and disrespectability; however, tarnishing is a facile synthetic approach for preparing thin metal-sulfide films on silver or copper metal that might be exploited to prepare more elaborate materials with desirable optoelectronic properties. In this work, we prepare luminescent semiconducting thin films of mithrene, a metal-organic chalcogenolate assembly, by replacing the tarnish-causing atmospheric sulfur source with diphenyl diselenide. Mithrene, or silver benzeneselenolate [AgSePh]∞, is a crystalline solid that contains both an organic supramolecular phase and a two-dimensional inorganic coordination polymer phase. This compound gradually accumulates as the sole product of silver metal corrosion. The chemical reaction is carried out on metallic silver thin films and yields crystalline films with thicknesses ranging from 5 to 100 nm. We use the large-area films (>6 cm2) afforded by this method to measure the optical properties of this compound. The mild-temperature, wafer-scale processing of hybrid chalcogenolate thin films may prove useful in the application of hybrid organic-inorganic materials in semiconductor devices and hierarchical architectures.

中文翻译：

使银金属变色为 Mithrene

暴露在大气中的银金属会因金属氧化和沉淀为不溶性盐而腐蚀并失去光泽。Tarnish 的名声如此糟糕，以至于这个词本身就意味着腐败和不尊重；然而，失去光泽是一种在银或铜金属上制备金属硫化物薄膜的简便合成方法，可用于制备具有理想光电特性的更精细材料。在这项工作中，我们通过用二苯二硒化物代替导致失去光泽的大气硫源，制备了发光半导体薄膜 mithrene，一种金属 - 有机硫族化合物组件。Mithrene 或苯硒酸银 [AgSePh]∞，是一种结晶固体，包含有机超分子相和二维无机配位聚合物相。这种化合物作为银金属腐蚀的唯一产物逐渐积累。化学反应在金属银薄膜上进行，产生厚度为 5 至 100 nm 的晶体薄膜。我们使用该方法提供的大面积薄膜 (>6 cm2) 来测量该化合物的光学特性。混合硫属元素化物薄膜的温和温度、晶圆级加工可能在混合有机-无机材料在半导体器件和分层结构中的应用中被证明是有用的。6 cm2) 由该方法提供以测量该化合物的光学性质。混合硫属元素化物薄膜的温和温度、晶圆级加工可能在混合有机-无机材料在半导体器件和分层结构中的应用中被证明是有用的。6 cm2) 由该方法提供以测量该化合物的光学性质。混合硫属元素化物薄膜的温和温度、晶圆级加工可能在混合有机-无机材料在半导体器件和分层结构中的应用中被证明是有用的。

更新日期：2018-09-28

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