A highly selective and sensitive fluorescent probe for Cu<sup>2+</sup>based on a novel naphthalimide–rhodamine platform and its application in live cell imaging
aberrant copper homeostasis in lysosomes can lead to various serious diseases. Herein, a bifluorophore-based, lysosome-targetable Cu2+-selective ratiometric fluorescent probe (V) has been synthesized by reasonable design. The probe V shows high selectivity toward Cu2+ ions over other cations and exhibits high sensitivity (1.45 nM) for the detection of Cu2+ ions. Meanwhile, the probe is cell permeable and
The lysosome-targeted probe CuNI exhibits highly effective fluorescence detection ability for Cu2+ in aqueous solution and cells. The fluorescent enhancement is due to the Cu2+-catalyzed hydrolysis of CuNI and the AIE effect of the hydrolysate MFNI.
Recently, sulfurdioxide (SO2) fluorescent detection and bioimaging become popular because the fluorescent probes field development and the importance of sulfurdioxide in biological systems. The development of high selectivity and high effient detection sulfurdioxide in biosystem is still a challenge due to interference of related substances. In this work, hydrazine connected by aldehyde was used