第四种晶相最密排列方式

发布时间：2018-05-29 06:25

本文选题：金纳米团簇 + 晶相排列　；参考：《中国科学基金》2017年05期

【摘要】：迄今为止,在晶体中共发现了三种最密排列方式。金属纳米团簇研究的兴起,为发现新的晶相排列提供了契机,这是因为金属纳米团簇粒子具有亚纳米尺寸和组成结构的多样性。近年来,我们在研究金属纳米团簇内部结构的基础上,开展了金属纳米团簇的外部结构(晶相排列)研究,继在Au_(92)团簇中发现4H最密排列后,最近合成了一个新的团簇Au_(60),并在它的晶体结构中发现了一种独特的晶相最密排列方式6HLH,这是继1979年第三种晶相最密排列方式发现后的一种新的最密排列方式。6HLH排列导致Au_(60)固态荧光的显著衰减。另外,我们在这种团簇的结构中发现了6个四面体配位的μ4-S和一对巨型Au20S3(SCH2Ph)18长钉。我们的工作不仅对金属纳米团簇研究,而且对晶相排列的研究具有重要的启发意义。
[Abstract]:To date, three of the densest arrangements have been found in crystals. The rise of metal nanoclusters provides an opportunity to discover new crystal phase alignment, which is due to the diversity of subnanoscale size and composition of metal nanoclusters. In recent years, on the basis of studying the internal structure of metal nanoclusters, we have carried out the research on the external structure (crystal phase arrangement) of metal nanoclusters. Recently, a new cluster Austace 60 has been synthesized, and a unique crystal phase most dense arrangement, 6HLH, has been found in its crystal structure. This is a new most dense arrangement pattern. 6HLH row after the discovery of the third crystal phase densest arrangement in 1979. The list results in a significant decay of solid state fluorescence. In addition, we have found six tetrahedral coordination 渭 4-S and a pair of giant Au20S3(SCH2Ph)18 nails in the structure of this cluster. Our work is of great significance not only to the study of metal nanoclusters, but also to the study of crystal phase arrangement.
【作者单位】：中国科学院固体物理研究所中国科学院材料物理重点实验室中国科学院纳米科学卓越中心安徽省纳米材料与技术重点实验室;
【基金】：国家自然科学基金优秀青年科学基金(批准号:21222301) 青年科学基金(批准号:51502299)等资助
【分类号】：O76

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