New Protocols for the Synthesis of Stable Ag and Au Nanocluster Molecules.
New Protocols for the Synthesis of Stable Ag and Au Nanocluster Molecules.
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DOI：
10.1021/jz400332g
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
T. Udayabhaskararao;T. Pradeep
中科院分区：
文献类型：
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作者：
T. Udayabhaskararao;T. Pradeep
在溶液中“捕捉”非金属形式的金属，当它们生长到大块时，是当代材料研究中最令人兴奋的领域之一。在过去的十年里，一种新的稳定方法，以小硫醇捕获贵金属的非金属形式，已经发展成为一个令人兴奋的合成领域。金团簇处于这项研究的前沿，产生了由几个到几百个原子组成的新“分子”。通过从金团簇研究的指导方针，开发了各种新的银纳米团簇的协议。在这方面，我们强调了最近的进展，原子精确的银，金，及其合金簇的合成，特别强调银。作为最近的努力的结果，诸如Ag 7，8（SR）7，8、Ag 7（-S-R-S-）4、Ag 9（SR）7、Ag 32（SR）19、Ag 44（SR）30、Ag 140（SR）53、Ag 280（SR）140和Ag 152（SR）60（SR和S-R-S分别指硫醇盐和二硫醇盐配体）的簇被添加到文献中。此外，还合成了“银覆盖”和“金覆盖”的合金团簇。关于这种团簇结晶的早期报告是可以得到的。这些簇中的几个被证明是传感器，催化剂和农药降解剂，这表明这些材料可能会在可预见的未来在日常生活中找到应用。
"Catching" metals in the nonmetallic form in solution, as they grow to bulk, is one of the most exciting areas of contemporary materials research. A new kind of stabilization to catch the nonmetallic form of noble metals with small thiols has evolved as an exciting area of synthesis during the past decade. Gold clusters stay in the frontline of this research, yielding new "molecules" composed of a few to several hundreds of atoms. By taking guidelines from gold cluster research, various new protocols for silver nanoclusters were developed. In this Perspective, we highlight the recent advances on the synthesis of atomically precise silver, gold, and their alloy clusters with a special emphasis on silver. As a result of intense efforts of the recent past, clusters such as Ag7,8(SR)7,8, Ag7(-S-R-S-)4, Ag9(SR)7, Ag32(SR)19, Ag44(SR)30, Ag140(SR)53, Ag280(SR)140, and Ag152(SR)60 (SR and S-R-S refer to thiolate and dithiolate ligands, respectively) were added to the literature. Moreover, "silver-covered" and "gold-covered" alloy clusters have also been synthesized. Early reports of the crystallization of such clusters are available. Several of these clusters are shown to act as sensors, catalysts, and pesticide degradation agents, which suggests that these materials may find applications in daily life in the foreseeable future.