Kihoon Kim, Shana Havenridge, Nestor J. Zaluzec, Donghyeon Kang, Nuwanthaka P. Jayaweera, Jeffrey W. Elam, Karen L. Mulfort, Cong Liu and Alex B. F. Martinson*,
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引用次数: 0
摘要
在溶液相中形成原子级精确团簇(称为神奇尺寸团簇)在能量上是有利的,这使得精确的纳米级合成具有极高的均匀性。我们报告了直接在聚合物薄膜中通过原子层沉积前驱体的气相渗透合成神奇尺寸团簇的过程。将三甲基铟蒸气和硫化氢气体依次渗入聚甲基丙烯酸甲酯,可形成性质均匀一致的魔幻尺寸簇-In6S6(CH3)6。虽然随着反应性 In 和 S 前驱体的连续渗入,团簇尺寸可能会增大,但在一系列加工条件下,多种聚合物中都会形成与神奇尺寸团簇一致的均匀特性。In6S6(CH3)6 的紫外可见吸收光谱基本上不受连续浸润循环次数的影响,并表现出空气稳定性。
Vapor Infiltration Synthesis of Indium Sulfide Magic Size Cluster
The energetically favorable formation of atomically precise clusters, known as magic size clusters, in the solution phase enables a precision nanoscale synthesis with exquisite uniformity. We report the synthesis of magic size clusters via vapor infiltration of atomic layer deposition precursors directly in a polymer thin film. Sequential infiltration of trimethylindium vapor and hydrogen sulfide gas into poly(methyl methacrylate) leads to the formation of clusters with uniform properties consistent with a magic size cluster─In6S6(CH3)6. While an increase in cluster size might be expected with additional sequential infiltration cycles of the reactive In and S precursors, uniform properties consistent with magic size clusters form in multiple polymers under a range of processing conditions. Ultraviolet–visible absorption spectra of In6S6(CH3)6 are largely independent of the number of sequential infiltration cycles and exhibit air stability, both of which are attributed to an energetically favorable synthetic pathway that is evaluated with density functional theory.
期刊介绍:
ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.