合体-ALD成长的金属氧化物外使光活性联体/纳米晶复合材料的合成成为可能
Philippe B Green1, Ona Segura Lecina1, Petru P Albertini1
1Laboratory of Nanochemistry for Energy Research, Institute of Chemical Sciences and Engineering, Ecole Politechnique Fédérale de Lausanne, Sion, CH-1950, Switzerland.
Journal of the American Chemical Society
|March 30, 2023
概括
体原子层沉积 (c-ALD) 通过将有机染色体封装在外中,产生稳定的混合纳米晶体 (NC). 这种方法克服了传统的配体交换的局限性,使催化和多刺激过程得到增强.
科学领域:
- 材料科学
- 纳米技术
- 化学学
背景情况:
- 体纳米晶体 (NC) 是催化,光电子和生物成像的多功能材料.
- 有机染色体增强NC功能,但它们通过配体交换的集成具有不稳定性和受限制的访问等限制.
- 现有方法在可逆结合,有限的位置可访问性和净化诱导的体不稳定性方面存在困难.
研究的目的:
- 开发一种用于将有机染色体与NC集成的新方法,绕过配体交换的局限性.
- 创建稳定,功能化的混合NC,以增强先进应用的特性.
- 展示一种在NC上制造有机/无机混合的新方法.
主要方法:
- 使用状原子层沉积 (c-ALD) 来生长NC周围的无形.
- 在生长过程中被困的光活性有机染色体 (多芳香碳化合物).
- 包括PbS,CsPbBr3,CuInS2和Cu2-X在内的各种半导体和上转换NC的功能化.
主要成果:
- 由NC和有机染色体组成的体稳定的复合材料.
- 在层中成功捕获染色体, 形成混合结构.
- 通过外进行三重能量传输并组装三重激发道结构.
结论:
- c-ALD方法提供了稳定的NC-染色体混合体的可靠途径,克服了配体交换的限制.
- 由此产生的有机/无机混合增强了催化和多刺激过程.
- 这种方法为设计具有协同性能的先进纳米材料提供了有前途的策略.
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