Dual detection probes for mercaptopyrimidine-modified copper-based nanomaterials: High-sensitivity detection of temperature and alcohols
Source abstract
Abstract
Orange light-emitting copper nanoparticles (DAMP-CuNPs@PVP) with a particle size of approximately 100 nm were synthesized through the reaction of 4,6-diamino-2-mercaptopyrimidine (DAMP), with copper chloride in the presence of ascorbic acid (AA) and polyvinylpyrrolidone (PVP). The DAMP-CuNPs@PVP composite system exhibits excellent stability and dispersibility, remaining clear after 20 days of storage at room temperature without any significant alteration in fluorescence. Within the temperature range of 0–60 °C, the fluorescence properties of DAMP-CuNPs@PVP vary with temperature changes: as the temperature increases, the emission peak at 571 nm weakens, while the emission peak at 471 nm strengthens. A good linear relationship is observed betweenlg(I477/I571) and T. Upon repeated heating and cooling cycles, the emission peak intensity ratio I477/I571of the system demonstrates reversible behavior in response to temperature changes. After 18 cycles, the system retains stable thermosensitive fluorescence characteristics. Additionally, the system responds to ethanol with a detection limit of 1.5%.Graphical abstractA new fluorescent probe, which can realize the dual detection of temperature and ethanol.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence and Fluorescent Materials · Nanocluster Synthesis and Applications · Carbon and Quantum Dots Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
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