A Eu3+-inspired fluorescent carbon nanodot probe for the sensitive visualization of anthrax biomarker by integrating EDTA chelation

Steady‐State and Dynamic Bioanalysis using Carbon Quantum Dot‐based Luminescence Probes

“…Using I 515 /I 428 ratio as the signal reporter, an “on‐off‐on” fluorescent method for the determination of ATP was achieved in the concentration range of 50 nM to 2 μM, with a LOD of 10 nM. Recently, our group exploited a CQD‐EDTA‐Eu 3+ platform for the rapid and sensitive detection of 2,6‐dipicolinic acid (DPA, a unique anthrax biomarker) through antenna effect, as shown in Figure 4C [33] . In this system, EDTA is chosen to contribute perfect coordination of Eu 3+ in the presence of DPA, which dramatically enhances the red emission (616 nm) from 5 D 0 → 7 F 2 of Eu 3+ .…”

A ratiometric luminescence nanoprobe based on layered terbium hydroxide nanosheets for quantitative detection of an anthrax biomarker

“…Anthracnosis is a zoonotic, severe infectious disease caused by Bacillus anthrax, in which spores may be transmitted by food, water and air. [1][2][3][4][5][6][7] The inhalation of 10 4 Bacillus anthracis spores is deadly without treatment within 24-48 hours. [8][9][10] Anthrax has a microstructure that is highly resistant to extreme environments and can resist environments such as high temperature and high pressure, drought, ultraviolet irradiation, chemical disinfectants, strong acids and alkalis.…”

“…[21][22][23] Extensive work has been done on lanthanide ion modified carbon dots or quantum dots for the detection of DPA. [1][2][3]6,8 Layered rare-earth hydroxide (LRH) is an anionic inorganic layered material, 21 which is composed of positively charged layers and negatively charged interlayers of anions. 20,[24][25][26] Due to its rich interlayer chemical properties such as intercalation and ion exchange, it is widely used in the fields of adsorbent, catalysts and photochemical materials.…”

Gold Nanocluster-Encapsulated Hyperbranched Polyethyleneimine for Selective and Ratiometric Dopamine Analyses by Enhanced Self-Polymerization

“…However, such a discrimination approach can only differentiate DA analogs at the µM level. Notice that ratiometric sensing systems with built-in correction characters usually display high sensitivity (Li et al, 2017;Huang et al, 2018;Yang et al, 2020a); this specific reaction, in combination with a fluorescent internal reference, may be able to construct a sensitive and selective DA sensor, which is theoretically feasible.…”