A review of recent developments in fluorescent sensors for the selective detection of palladium ions

A Novel Conjugated Polymer Consists of Benzimidazole and Benzothiadiazole: Synthesis, Photophysics Properties, and Sensing Properties for Pd2+

“…Palladium is one of the metal ions in the platinum group which is largely applied as a catalyst in drug synthesis, automobile exhaust purification, and jewelry industry because of its physicochemical properties . However, the final products in those industries are difficult to completely remove palladium element which comes from the catalyst.…”

A Bispyrazole Based Porous 2D Luminescent MOF for the Turn‐Off Detection of Pd(II) Ions

“…Various kinds of spectroscopic and analytical techniques have been developed for the detection of Pd 2+ ions such as ion mobility spectroscopy (IMS), inductively coupled plasma (ICP), X‐ray dispersion, voltammetry, atomic absorption spectroscopy (AAS), etc., some of which are expensive, insensitive and some have portability issues. The abovementioned techniques, especially, do not fit well for their applications in living systems since they bring about the destruction of the cells …”

“…In particular, luminescent MOFs provide several advantages such as, monitoring in real time, quick response, cost efficient, high sensitivity, etc., which leads to the development of numerous MOFs for the detection of ions, explosives and small molecules . Although there have been many discrete molecule based fluorescent sensors to detect Pd 2+ ions, but very few to find in the MOF category …”

A novel diarylethene‐based fluorescence sensor with a benzohydrazide unit for the detection of Zn2+

“…Compared with the methods mentioned above, the fluorescent sensors are very worthy of concerning technique due to the sensitivity, simplicity, and real‐time monitoring. [ 19–23 ] So far, many fluorescent sensors based on various fluorescent groups such as fluorophores rhodamine, [ 24,25 ] quinoline, [ 26–30 ] coumarins, [ 31,32 ] heptamethine cyanine, [ 33 ] anthracene, [ 34 ] and others units have been reported for the detection of Zn 2+ . [ 35–41 ] Due to the concentration of Zn 2+ in living things that is about 1.96 × 10 −6 mol L −1 and the World Health Organization (WHO) regulates the concentration of Zn 2+ in drinking water to be 7.0 × 10 −6 mol L −1 , [ 42,43 ] it is still crucial to construct a highly sensitive and selective new fluorescent sensor for the detection of Zn 2+ .…”