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Light-patterned fluorescent gold nanoclusters in polycarbonate films
Optical Materials Express ( IF 2.8 ) Pub Date : 2021-11-16 , DOI: 10.1364/ome.445303
Mohammad Bitarafan , Shaochen Zhuou , Jussi Hänninen , Yanyan Duan , Martti Leino , Robin Ras , Juha Toivonen

Fluorescent metal nanoclusters embedded in rigid matrices are attractive for many applications, such as for use as light-emitting diodes and for optical data storage. Given the advantages of polycarbonate films, like high transparency and excellent toughness, the development of metal nanoclusters in these films could further enhance various applications. Herein, we fabricated fluorescent gold nanoclusters in a polycarbonate film using a photochemical process. The polymer film is doped with gold chloride and a photoinitiator and then irradiated by a light-emitting diode (365 nm), leading to the photoreduction of gold ions and the formation of bright fluorescent nanoclusters with a quantum yield of 15%. The as-formed nanoclusters display good photostability and retain their emission spectral shape over an extended period of time. These highly fluorescent structures have potential applications in the fabrication of authenticity markings and optoelectronic devices.

中文翻译:

聚碳酸酯薄膜中的光图案荧光金纳米团簇

嵌入刚性矩阵的荧光金属纳米团簇对许多应用都很有吸引力,例如用作发光二极管和光学数据存储。鉴于聚碳酸酯薄膜的优势,如高透明度和优异的韧性,在这些薄膜中开发金属纳米团簇可以进一步增强各种应用。在此,我们使用光化学工艺在聚碳酸酯薄膜中制造了荧光金纳米团簇。在聚合物薄膜中掺杂氯化金和光引发剂,然后用发光二极管(365 nm)照射,导致金离子光还原,形成明亮的荧光纳米团簇,量子产率为15%。形成的纳米团簇显示出良好的光稳定性并在很长一段时间内保持其发射光谱形状。
更新日期:2021-12-01
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