Highly sensitive and selective “turn-off” fluorescent probes based on coumarin for detection of Cu2+

A double responsive fluorescent platform for sensing heavy metal ions based on a dual-emitting fluorescent covalent organic framework hydrogel film

“…Compared with other dyes, coumarin and its derivatives exhibit excellent photophysical properties and superior chemical stability, 18 and are extensively employed in various disciplines, including medicine, biology and sensing. [19][20][21][22] However, as far as we know, COF materials modified with coumarin dyes have not been reported.…”

Coumarin‐based Chemosensors for Metal Ions Detection

“…Synthesis of compound SC76, SC77, SC78 and SC79. [140] ochromic shift in emission wavelength. According to the fluorescence of SC76 and SC77, the longer the alkyl chain, the greater the emission.…”

“…The primary focus of the research is based on their detection outcomes, associated mechanisms, and application domains. [140] The reactants used to synthesize these coumarin derivatives with different substituent groups were created via multi-step reactions. Scheme 91 depicts the reaction formula, where X represents hydrogen or halogen atoms and R represents the alkyl chains derived from alcohols.…”

“…Copper ion detection in SH-SY5Y cells, Hep G2 cells, used to observe the fluorescence in COS-7 cells, and used efficiently to determine Cu 2 + in live cells and water samples. [129,130,[132][133][134][135][136][137][138][139][140] 10.…”

“…created many coumarin derivatives with simple structures, indicated as ICTAB (molecule SC76 ), ICTAM (compound SC77 ), BCTAB (compound SC78 ), and CTAP (compound SC79 ), that may be produced in a “one‐step” process. The primary focus of the research is based on their detection outcomes, associated mechanisms, and application domains [140] …”