Dissipative Self-Assembly of Photoluminescent Silicon Nanocrystals
Dissipative Self-Assembly of Photoluminescent Silicon Nanocrystals
复制标题
DOI：
10.1002/anie.201807937
复制
发表时间：
2018-10-26
影响因子：
16.6
通讯作者：
Boekhoven, Job
中科院分区：
文献类型：
--
作者：
Groetsch, Raphael K.;Angi, Arzu;Boekhoven, Job
硅纳米晶体(SiNC)溶液因其可调的光致发光、生物相容性和丰富的硅元素而被广泛应用。在耗散超分子材料中，分子或纳米颗粒的自组装是由一个不可逆地消耗燃料的化学反应网络驱动的。新出现的结构的性质由潜在化学反应网络的动力学控制。在这里，我们展示了化学燃料驱动的光致发光SiNCs的耗散自组装。化学反应诱导了水溶性SiNCs的自组装。然而，这些组件是暂时的，当化学反应网络耗尽燃料时，SiNC就会分解。组件的寿命由添加的燃料量控制。作为暂态超分子材料的一种应用，我们证明了该平台可用于控制哺乳动物细胞对纳米晶体的延迟摄取。
Solutions of silicon nanocrystals (SiNCs) are used in a diverse range of applications because of their tunable photoluminescence, biocompatibility, and the abundance of Si. In dissipative supramolecular materials, self-assembly of molecules or nanoparticles is driven by a chemical reaction network that irreversible consumes fuel. The properties of the emerging structures are controlled by the kinetics of the underlying chemical reaction network. Herein, we demonstrate the dissipative self-assembly of photoluminescent SiNCs driven by a chemical fuel. A chemical reaction induces self-assembly of the water-soluble SiNCs. However, the assemblies are transient, and when the chemical reaction network runs out of fuel, the SiNCs disassemble. The lifetime of the assemblies is controlled by the amount of fuel added. As an application of the transient supramolecular material, we demonstrate that the platform can be used to control the delayed uptake of the nanocrystals by mammalian cells.