Badiya, Pradeep KumarJayakumar, Tejkiran PindiSrinivasan, VenkateshRamamurthy, Sai Sathish2023-07-192023-07-192017-06-15Badiya, Pradeep Kumar, Jayakumar, Tejkiran Pindi, Srinivasan, Venkatesh and Ramamurthy, Sai Sathish. "Spacer layer engineering for ultrasensitive Hg(II) detection on surface plasmon-coupled emission platform" Nanotechnology Reviews 6, no. 4 (2017): 331-338. https://doi.org/10.1515/ntrev-2017-0124https://doi.org/10.1515/ntrev-2017-0124http://hdl.handle.net/11603/28775In this work, we demonstrate for the first time the ultrasensitive detection of Hg²⁺ ions with femtomolar sensitivity in water samples with the use of the surface plasmon-coupled emission (SPCE) platform. The use of portable network diagnostic tools for water security and integrated water shed management is a topic of recent research interest. In this context, the current study explores Hg²⁺ monitoring using a rhodamine-6G (Rh6G) derivative bearing a monothiospirolactone mounted onto a SPCE substrate. Thus far, the limit of detection for mercury ions by the conventional fluorescence technique has been 0.15 nm. However, we have achieved 1 fm Hg²⁺ detection using silver nanoparticle-based spacer layer engineering on an SPCE sensor chip. Using this technology, a field device can be fabricated for rapid, ultrasensitive, multi-analyte detection (of contaminants) in water samples.8 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND 3.0)https://creativecommons.org/licenses/by-nc-nd/3.0/Text