Zorlu Tolga, Puértolas Begoña, Becerril-Castro I Brian, Guerrini Luca, Giannini Vincenzo, Correa-Duarte Miguel A, Alvarez-Puebla Ramon A
Department of Physical and Inorganic Chemistry, Universitat Rovira i Virgili, Carrer de Marcel·lí Domingo s/n, 43007 Tarragona, Spain.
Department of Physical Chemistry, Center for Biomedical Research (CINBIO), Southern Galicia Institute of Health Research (IISGS) and Biomedical Research Networking Center for Mental Health (CIBERSAM), Universidade de Vigo, 36310 Vigo, Spain.
ACS Nanosci Au. 2023 Mar 6;3(3):222-229. doi: 10.1021/acsnanoscienceau.2c00063. eCollection 2023 Jun 21.
Herein, we designed and synthesized a hybrid material comprising polystyrene submicrobeads coated with silver nanospheres. This material provides a dense collection of electromagnetic hot spots upon illumination with visible light. The subsequent coating with a metal-framework and the adsorption of bathocuproine on it yield an optical sensor for SERS that can specifically detect Cu(II) in a variety of aqueous samples at the ultratrace level. Detection limits with this method are superior to those of induced coupled plasma or atomic absorption and comparable with those obtained with induced coupled plasma coupled with a mass detector.
在此，我们设计并合成了一种由涂有银纳米球的聚苯乙烯亚微珠组成的杂化材料。这种材料在可见光照射下会产生密集的电磁热点集合。随后用金属框架进行包覆并在其上吸附 bathocuproine，从而得到一种用于表面增强拉曼光谱（SERS）的光学传感器，该传感器能够在超痕量水平下特异性地检测各种水性样品中的 Cu(II)。此方法的检测限优于电感耦合等离子体或原子吸收法，与电感耦合等离子体与质量检测器联用所获得的检测限相当。
