| 초록 |
In this study, a solid-phase colorimetric sensing platform for detecting bromide (Br−) in an aqueous medium was developed. The platform is based on the localized surface plasmon resonance (LSPR) properties of silver (Ag) nanoprisms with sharp tips. An Ag-nanoprism-embedded tough hydrogel with interpenetrating polymer networks was synthesized via aqueous-phase polymerization and crosslinking processes. The Ag nanoprisms immobilized inside the hydrogel were stable and did not exhibit aggregation or degradation even after drying or time. This sensing platform was found to exhibit a wide sensing range and high selectivity, with a low limit of detection (LOD) of 10 μM. It also offers substantial advantages over previously developed systems, such as eco-friendly, safe use, stable for extended periods, and visual detection. |
