Metal–organic frameworks (MOFs) as fluorescence sensors: principles, development and prospects

Abstract

MOFs are self-assembled by inorganic metals and organic ligands, which have the advantages of inorganic and organic materials. With its porosity, chemical tunability and moderate-to-high stability, MOFs have become excellent...

MFM-300(Sc): a chemically stable Sc(iii)-based MOF material for multiple applications

“…1,2 Since the first MOFs were reported in the 1990s, they have attracted considerable attention from scientists due to their large pore sizes, high apparent surface areas, and relatively high chemical and thermal stability. 3,4 All these properties have postulated MOFs as very attractive candidates for a wide variety of applications, such as gas storage and separation, [5][6][7] detection, [8][9][10] catalysis, [11][12][13] energy conversion, 14,15 and drug delivery. 16,17 MOFs exhibit the advantage of tunable and adaptable structures compared to conventional porous materials, such as zeolites, carbon molecular sieves, and porous metal oxides.…”

Construction of ZnII/CdII-CPs and their fluorescent detection for Fe3+, Cr2O72− and TNP in water via luminescence quenching

“…27–30 However, the poor stability of CPs in aqueous solution will limit their applications in real life, and the exploration of fluorescent CPs with desired functionality and high stability in water remains an ongoing challenge. 6,31–51…”

“…6, In general, some CPs based on highly π-electron rich ligands usually show exclusive luminescence properties. [34][35][36][37] In addition, the introduction of hydrophobic groups (-CH 3 ) of ligands may increase the stability of the CPs and the flexible group (-CH 2 ) sometimes provides a flexible and distinct coordination mode. Transition metal ions with a d 10 electronic configuration have been widely chosen to construct luminescent CPs with good fluorescence performance.…”

A highly thermal and pH-stable fluorescence sensor for rapid detection of Hg2+, Fe3+, and tetracycline in aqueous solutions

“…Owing to structural diversity, excellent selectivity, quick response time and high sensitivity, coordination polymers (CPs) can be used as a kind of outstanding fluorescent sensing materials and are attracting considerable attention, [12][13][14][15][16][17][18][19][20][21][22][23][24] To date, various types of luminescence CPs have been successfully prepared and implemented in the detection of cations, anions, organic molecules, explosives, pesticides, antibiotics, and biomarkers. [24][25][26][27][28][29][30][31][32][33][34][35] As most of the above pollutants are detected in water, the synthesis of water-stable LCPs to detect metal ions and antibiotics in water has promising applications. [36][37][38][39][40][41] In 2023, the Liu group reported some lanthanide metal-organic frameworks with reversible luminescence sensing to detect small organic molecules (such as L-arginine, L-lysine, and benzaldehyde) through fluorescence enhancement or quenching effect.…”