Polyvinyl pyrrolidone (PVP), playing roles as a templating agent, can be applied to prepare blue-emitting copper nanoclusters (Cu NCs@PVP) on the basis of a rapid chemical reduction synthesis method. The Cu NCs@PVP displayed a blue emission wavelength at 430 nm and the corresponding quantum yield (QY) could reach 10.4%. Subsequently, the as-synthesized Cu NCs@PVP were used for the trace analysis of furaltadone based on the inner filter effect (IFE) between Cu NCs@PVP and furaltadone, which caused the fluorescence to be effectively quenched. Additionally, this proposed determination platform based on the Cu NCs@PVP for furaltadone sensing possessed an excellent linear range from 0.5 to 100 μM with a lower detection limit of 0.045 μM (S/N = 3). Meanwhile, the Cu NCs@PVP also could be applied for the sensing of temperature. Furthermore, the practicability of the sensing platform has been successfully verified by measuring furaltadone in real samples, affirming its potential to increase fields for the determination of furaltadone.

聚乙烯吡咯烷酮（PVP）作为模板剂，可用于基于快速化学还原合成方法制备蓝色发光铜纳米团簇（Cu NCs@PVP）。Cu NCs@PVP在430 nm处显示出蓝色发射波长，相应的量子产率（QY）可达10.4%。随后，基于Cu NCs@PVP与呋喃他酮之间的内滤效应（IFE），将合成的Cu NCs@PVP用于呋喃他酮的痕量分析，使荧光有效猝灭。此外，该提出的基于Cu NCs@PVP的呋喃他酮传感测定平台具有0.5至100 μM的优异线性范围，检测下限为0.045 μM ( S / N = 3)。同时，Cu NCs@PVP也可用于温度传感。此外，该传感平台的实用性已通过对实际样品中呋喃他酮的测量得到成功验证，肯定了其增加呋喃他酮测定领域的潜力。