Europium-based metal-organic framework containing characteristic metal chains: A novel turn-on fluorescence sensor for simultaneous high-performance detection and removal of tetracycline

Pyrazine functionalization to boost the antenna effect in rare-earth metal–organic frameworks for tetracycline detection

“…Studies have shown that prevailing luminescence sensing mechanisms for MOF-based materials include fluorescence resonance energy transfer (FRET), photoinduced electron transfer (PET), structural conversion (SC), the internal filtration effect (IFE), chemical conversion (CC) and dynamic/static quenching (D/ SQ). 12,28,29,31 To better understand the luminescence quenching mechanism of JNU-206-Eu for TCs, combined experimental characterizations and theoretical calculations were carried out. Taking OTC as an example, PXRD patterns of JNU-206-Eu were measured to confirm the retention of its phase purity after being soaked in an aqueous solution of OTC for three days (Fig.…”

“…[13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] As far as luminescence sensing is concerned, rare-earth MOFs (RE-MOFs) are promising candidates owing to their intriguing electronic/optical properties, intense luminescence emissions and high resistance to interference. [28][29][30][31][32] However, the production of RE-MOFs with characteristic RE luminescence is still serendipitous, and the limited hydrolytic stability of most RE-MOFs hinders their real-world applications in aqueous-medium environments. Therefore, it is equally important to prepare RE-MOFs of high stability and intense emission if they are to be used for on-site luminescence sensing.…”

Multi-functional metal–organic frameworks for detection and removal of water pollutions

“…12). 158 Interestingly, the Eu-MOF showed significant fluorescence enhancement with a wide range (0.05-60 mM) and low detection limit (3 nM) towards TC under optimized conditions. Meanwhile, the Eu-MOF also demonstrated good adsorption capacity of 387 mg g À1 for TC.…”

An ultrastable zinc-based organic framework as a recyclable luminescent probe for methylmalonic acid detection

“…34–36 Additionally, a rapid response can be seen through luminescence intensity and optical absorbance with the increase, decrease or quenching of emission. With the development of luminescent materials, the current research studies mainly focus on the detection of cations, 37–39 anions, 40–43 and organic molecules, 44–47 and pH, 48 temperature, and biological molecules. 49–57 To the best of our knowledge, there is only one report on MOF luminescent probe for the MMA recognition, in which a luminescent In-MOF with dual fluorescence emission of Tb 3+ and Ru(bpy) 3 2+ was explored by Yan's group.…”