Hypochlorite ions (ClO^-) are widely used in bleaching agents and disinfectants. However, high concentrations of chloride species are harmful to human health. Therefore, effective methods for the detection of ClO^- ions are required. In this study, using 4-fluorophthalic acid and glycine, nitrogen–fluorine co-doped carbon nanodots (N,F-CDs) were synthesized by one-pot hydrothermal synthesis for use as a fluorescent probe for the fluorometric detection of ClO^- in aqueous media, based on the inhibition of n→π* transitions. The excitation and emission peak centers of the N,F-CDs are at 387 and 545 nm, respectively. The N,F-CDs show a fast quenching response (< 1 min) for ClO^- and can be used in a wide pH range (pH 4–13). Under optimal conditions, the fluorescence intensity decreased with increase in the ClO^- concentration from 0 to 35 μM, and a low limit of detection (9.6 nM) was achieved. This probe possesses excellent selectivity and high sensitivity and was used to analyze standardized samples of piped water, achieving a satisfactory recovery. Thus, this nitrogen–fluorine co-doped nanodot probe is promising for the detection of pollutants.

次氯酸根离子（CLO ^- ）被广泛用于漂白剂和消毒剂。但是，高浓度的氯化物对人体健康有害。因此，用于检测CLO的有效方法^-是必需的离子。在这项研究中，使用4-氟酞酸和甘氨酸，氮氟共掺杂的碳纳米点（N，F-CDS）用一釜水热合成用作CLO的荧光检测的荧光探针合成^-在水溶液介质，基于对n→π*跃迁的抑制。N，F-CD的激发和发射峰中心分别在387和545 nm。N，F-CD对ClO表现出快速的猝灭响应（<1分钟）^-可以在很宽的pH范围（pH 4-13）中使用。在最佳条件下，荧光强度与在CLO增加而降低^-浓度从0至35μM，并获得检测的下限（9.6纳米）。该探针具有出色的选择性和高灵敏度，可用于分析自来水的标准化样品，实现令人满意的回收率。因此，这种氮氟共掺杂纳米点探针有望用于污染物的检测。