Fularz Agata, Stogiannis Dimitrios, Rice James H
School of Physics, University College Dublin, Belfield, Dublin 4, Ireland.
Department of Physics, University of Ioannina, Ioannina 45110, Greece.
ACS Mater Au. 2022 Mar 23;2(4):453-463. doi: 10.1021/acsmaterialsau.2c00013. eCollection 2022 Jul 13.
In order to meet environmental concerns, there is an increasing demand for biodegradable and sustainable materials in many areas, including photonics. Cellulose and its derivatives are potentially eco-friendly alternatives to conventional plastics, because of their abundance and lower environmental impact. Here, we report the fabrication of plasmonic structures by molding cellulose acetate into submicrometric periodic lattices, using soft lithography. The fabricated platforms can be used for the enhancement of Raman and fluorescence signals of a range of analytes including a model immunoassay utilizing a streptavidin-conjugated dye, which is characterized by a 23-fold enhancement in fluorescence signal intensity, which shows the potential of the platform to be further used for the assay-based development of diagnostic tools.
为了满足环境方面的需求，包括光子学在内的许多领域对可生物降解和可持续材料的需求日益增加。纤维素及其衍生物因其丰富性和较低的环境影响，是传统塑料潜在的环保替代品。在此，我们报告了利用软光刻技术将醋酸纤维素模制成亚微米级周期性晶格来制造等离子体结构。所制造的平台可用于增强一系列分析物的拉曼和荧光信号，包括使用链霉亲和素偶联染料的模型免疫分析，其荧光信号强度增强了23倍，这表明该平台有潜力进一步用于基于分析的诊断工具开发。
