A highly sensitive fluorescent probe with different responses to Cu2+ and Zn2+

A novel dehydroabietic acid-based multifunctional fluorescent probe for the detection and bioimaging of Cu2+/Zn2+/ClO−

“…The proposed sensing mechanisms of the probe CPS toward Cu 2+ , Zn 2+ and ClO − ions were explored through Job's plot, 1 H NMR, FT-IR and ESI-MS methods. In the Job's plot experiment, the emission intensities were recorded at various ratios by maintaining the total concentration (10 μM) of CPS/ClO − , CPS/Cu 2+ and CPS/Zn 2+ .…”

“…Zinc and copper are known to be the second and third most abundant transition metal elements in organisms, which are indispensable to many life processes. 1,2 Within the right concentration range in the human body, zinc ions (Zn 2+ ) play a crucial role in enzyme regulation, cellular transport and apoptosis, gene expression, as well as neural signal transmission. [3][4][5][6] When the homeostasis of Zn 2+ is disturbed, many diseases could occur, such as Alzheimer's disease, diabetes, immune dysfunction, ischemic stroke, and infantile diarrhea.…”

Extracellular Cu2+ pools and their detection: From current knowledge to next-generation probes

“…[160] Despite the quenching ability of Cu 2+ , some Cu 2+ -selective turn-on sensors have been reported as coordination-based systems working via unspecified Chelation-Enhanced Fluorescence (CHEF). [179][180][181][182][183][184][185][186][187][188][189][190][191][192][193][194] These compounds share structural features, such as hydrazone or Schiff-base moiety to link the fluorophore to the ligand, which is generally non-Cu 2+ specific. Moreover, they have been used in the presence of a high percentage of acetonitrile and in most cases their reversibility has not been proven.…”

A Bifunctional “Off‐On” Fluorescence Probe Based on Naphthalene for the Detection of Ag+ and Al3+ and Its Application in Practical Water Samples, as a Logic gate and as Test Paper

“…The detection limit value was calculated to be 1.97 nM by applying equation 3δ/S . [37] Likewise, Al 3 + were added gradually to the PCT solution that enhanced gradually the fluorescence intensity at 446 nm…”