Ratiometric and visual determination of copper ions with fluorescent nanohybrids of semiconducting polymer nanoparticles and carbon dots

Semiconducting polymer dots for multifunctional integrated nanomedicine carriers

“… Fluorescent Imaging/Photodynamics Therapy [ 105 ] 20 GCDs@RSPN 380 501/625 N.A. Copper Ions Detection [ 106 ] 21 HA-BSe NPs 452 760/825 0.33 Photothermal Therapy [ 107 , 108 ] 22 L-Pdots N.A. 425 N.A.…”

“…To enhance sensitivity to redox properties, functional groups are often introduced into the side chains or modified on the surface of Pdots ( Fig. 3 illustrates the determination methods for ions like Fe³⁺ and Cu 2 ⁺) [ 106 ]. The substrate under test specifically interacts with oxidation- or reduction-sensitive groups, influencing the fluorescence signal of Pdots.…”

Advances in Carbon Dot-Based Ratiometric Fluorescent Probes for Environmental Contaminant Detection: A Review

“…The detection and quantification of heavy metal ions in the environment are crucial due to their high toxicity and potential adverse effects on ecosystems and human health. Heavy metal ions, such as mercury (Hg 2+ ) [ 86 , 101 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 ], lead (Pb 2+ ) [ 67 , 98 , 106 , 116 , 117 , 118 , 119 ], chromium (Cr 6+ ) [ 120 , 121 , 122 , 123 ], copper (Cu 2+ ) [ 67 , 79 , 92 , 109 , 119 , 124 , 125 , 126 , 127 , 128 , 129 , 130 ], and silver (Ag + ) [ 78 , 117 , 131 , 132 , 133 ], can contaminate water, soil, and air through various industrial processes and human activities. Table 1 summarizes sensing of some heavy metal ions using CD-based ratiometric fluorescence probes.…”

Maximizing analytical precision: exploring the advantages of ratiometric strategy in fluorescence, Raman, electrochemical, and mass spectrometry detection

“…allowing ratiometric sensing and imaging. They has become an ideal tool for visualizing, detecting, and quantifying a wide range of analytes, including ions, molecules, and biomolecules (Kumar et al, 2020;Chuang et al, 2022;Tseng et al, 2022;Luo et al, 2023). The design of ratiometric fluorescent nanoprobes involves carefully selecting fluorescent components, including dyes, quantum dots, upconversion nanoparticles, and metal clusters.…”

“…Nanoprobes should also be designed to target specific analytes by chemical modification or using biomolecules, such as antibodies, inducers, or peptides as recognition elements. For naked-eye detection, nanoprobes should have a high contrast between the two emission channels for easy visualization with the naked eye (Kumar et al, 2020;Tseng et al, 2022;Luo et al, 2023). A key aspect of designing ratiometric fluorescent sensors for visual detection is the thoughtful selection of fluorophores with distinct emission spectra.…”