高分支黑Au超粒子的压力调节种子生长以实现高效的光热转换
Qixuan Zhong1,2,3, Ji Feng4, Bo Jiang4,5
1Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, P.R. China.
Journal of the American Chemical Society
|November 23, 2021
概括
研究人员开发了一种新的方法来创建分支黄金纳米结构以实现高效的光热转换. 这些超级粒子对光热癌症治疗具有前景, 提供独立于光条件的宽带吸收.
科学领域:
- 纳米技术
- 材料科学
- 塑制剂
背景情况:
- 高分支的等离子超粒子提供宽带光吸收和高效的光热转换.
- 这些复杂的纳米结构的可控合成仍然是材料科学中的一个重大挑战.
研究的目的:
- 为分支黄金 (Au) 纳米结构开发可控制的合成策略.
- 研究这些超级粒子的光热特性和疗效.
主要方法:
- 采用一种应变调节策略,在黄金种子上使用*in situ*多多巴胺沉积.
- 这种方法促进了分支Au纳米结构的Volmer-Weber (岛屿) 增长模式.
- 光热转换效率的表征和光热癌症治疗中的应用.
主要成果:
- 分支超级粒子实现了91.0%的高光热转换效率.
- 这些纳米结构具有方向独立的吸收和低散射截面.
- 在低光功率 (0. 5 W/ cm2) 和纳米粒子剂量 (25 ppm) 中证明了光热癌症治疗的有效性.
结论:
- 应变调节策略使得可控的分支等离子超粒子合成.
- 这些纳米结构对于光热应用,包括癌症治疗具有很高的效率.
- 这项工作为设计先进的等离子纳米结构和扩展光热效应奠定了基础.
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