在等离子铜化纳米晶体中空隙调节的氧化解化学
Alexander G Rachkov1, Kevin Chalek2, Hang Yin1
1Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States.
ACS nano
|February 7, 2024
概括
铜化物纳米晶体显示可调节的近IR等离子体. 合成后的氧化还原处理扩大了调范围,使这些纳米材料具有新的光学特性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 物理化学 物理化学
背景情况:
- 铜化物 (Cu3-P) 纳米晶体在近红外表现出局部表面等离子体共振 (LSPR),这是由于基底构成和局部外孔.
- 控制非局部化的孔度是调整Cu3-P中的LSPR吸收的关键.
研究的目的:
- 研究用于调节合Cu3-P纳米晶体中的脱位孔度的后合成氧化还原化学.
- 扩大LSPR吸收的可调节范围,超出仅通过合成才能实现的范围.
主要方法:
- 使用了三种Cu-合的氧化还原化学方法,用于Cu3-P纳米晶体的合成后处理.
- 使用粉末X射线衍射,电子吸收光谱,31P MAS SSNMR和元素分析评估结构,光学和组成变化.
主要成果:
- 在660-890 meV的范围内实现了LSPR吸收的合成后调制.
- 确定了双价金属化物和三聚氨酸作为重要的结构和LSPR调节的有效剂.
- 观察到P63cm Cu3-P纳米晶处理化和三酸的最小报告单位细胞体积,表明铜空缺增加.
结论:
- 证明了氧化还原化学在精确控制Cu3-P纳米晶体的光学和结构性能的有效性.
- 提供了关于铜空缺,结构和等离子体特性之间的关系的宝贵见解.
- 通过合成后修改扩大了Cu3-P纳米晶体的可访问的LSPR调整范围.
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