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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。
To date, three most densely arranged patterns have been found in the crystal. The rise of metal nanoclusters provides an opportunity to discover new crystal phase alignments because of the subnanometer size and compositional diversity of metal nanocluster particles. In recent years, based on the study of the internal structure of metal nanoclusters, we have studied the external structure (crystal phase) of metal nanoclusters. Following the discovery of 4H densely arranged Au_ (92) clusters, we recently synthesized A new cluster of Au_ (60) has been discovered and a unique crystal-facies permutation, 6HLH, has been found in its crystal structure. This is the result of the discovery of the third-most-ordered crystal phase in 1979 The new most dense arrangement. The 6HLH alignment resulted in a significant attenuation of the Au_ (60) solid-state fluorescence. In addition, we found six tetrahedrally coordinated μ4-S and a pair of giant Au20S3 (SCH2Ph) 18 spikes in the structure of this cluster. Our work not only studies the metal nanoclusters, but also has important enlightenment on the study of crystal phase alignment.