Fluorescent 2D metal–organic framework nanosheets (MONs): design, synthesis and sensing of explosive nitroaromatic compounds (NACs)

Abstract

2D metal–organic nanosheets (MONs) constructed from 6-connecting hexaacid based on electron-rich 1,3,5-triphenylbenzene core and In(iii) salt permit detection of nitroaromatic compounds, e.g. TNT, in ppm levels.

A ferrocene-templated Pd-bearing molecular reactor

“…1,3,5-Triphenylbenzene frameworks or their nitrogen-containing derivatives are the widely used motifs for the construction of supramolecular frameworks possessing various prospective applications. [16][17][18][19] In recent years, an emerging field of application of 1,3,5-triphenylbenzene-type motifs has been the synthesis of symmetric molecular cages. [20][21][22][23][24][25][26][27][28] Such structures are characterized by the organized cavity.…”

Metal–Organic Framework Nanosheets: Programmable 2D Materials for Catalysis, Sensing, Electronics, and Separation Applications

“…Moorthy and co-workers have demonstrated efficient sensing of nitroaromatics using a MON system based on a fluorescent 6-connecting hexa-acid linker. [109] Here, the fluorescence of the electron rich MON is quenched by increasingly electron deficient analytes, with trinitrotoluene the most deficient and most effective quencher. The coordination polymer only exhibits fluorescence when exfoliated, as the close-packed nature of the MOF causes self-quenching.…”

Highly selective fluorescent turn-on–off sensing of OH−, Al3+ and Fe3+ ions by tuning ESIPT in metal organic frameworks and mitochondria targeted bio-imaging

“… 28 Optical properties especially fluorescence behaviours are one such aspect that may comprehensively get modified by incorporating chromophoric functional groups. 29 Such kind of fluorescent MOFs are widely utilized as potential chemical sensors, 30 photoactive LEDs, 31 aromatic explosive detectors 32 etc. Particle size of the MOFs can be further stabilized in nano region to form nanoscale MOFs (NMOFs).…”