Dual-modes of ratiometric fluorescent and smartphone-integrated colorimetric detection of glyphosate by carbon dots encapsulated porphyrin metal–organic frameworks

Exfoliation of a Coordination Polymer Based on a Linear π-Conjugated Ligand into an Ultrathin Nanosheet for Glyphosate Sensing

“…Also, there was no obvious overlap between the UV–vis absorption band of Glyph and the fluorescence excitation and emission bands of Cd-1-NS (Figure S14), excluding the possibility of competition absorption and energy transfer. Thus, we speculated that the PET process might be the responsible quenching mechanism for the sensing capability of Cd-1-NS toward Glyph because Glyph is electron-deficient and can serve as an effective electron acceptor . To validate this, the fluorescence lifetimes of Cd-1-NS before and after the addition of Glyph were determined.…”

The construction of dual-emissive ratiometric fluorescent probes based on fluorescent nanoparticles for the detection of metal ions and small molecules

“…142 In addition to dyes, CDs, QDs, and Ru (bpy) 3 2+ can also be encapsulated in LMOFs to avoid their agglomeration and improve their stability. Many excellent works on FNPs encapsulated in MOFs have been reported, such as CDs encapsulated in Eu-MOFs for the detection of the water content in organic solvents 143 or detection of antibiotics, 144 CDs encapsulated in the Zr-MOF PCN-222 for the detection of pesticides, 145 CDs encapsulated in Eu-DPA-MOF for the detection of Cu 2+ , 146 CDs encapsulated in Eu-MOF for the detection of Cr 6+ , 147 CDs encapsulated in UiO-66-(COOH) 2 for the detection of Cu 2+ , 148 CdTe QDs encapsulated in the NH 2 -MIL-53(Al) MOF for the detection of 6-mercaptopurine, 149 in situ growth of CsPbBr 3 QDs in Eu-BTC for the detection of Hg 2+ , 150 and Ru (bpy) 3 2+ encapsulated in blue emission UiO-66-NH 2 by situ encapsulation method for the detection of Hg 2+ . 151 For this type of DRFP, the encapsulated fluorescence guest can act as the response signal, while the MOFs play multiple functions, such as reference signal, stabilizing the fluorescence guest and accumulating the target to improve the detection sensitivity.…”

Metal-porphyrinic framework nanotechnologies in modern agricultural management

“…Table 4 lists a series of investigations, some of which are described below. 101,102,117,[120][121][122][123][124] Qi and coworkers have prepared water stable and porous 2Dmetal-porphyrinic nanosheets to adsorb chlorantraniliprole from water. 122 These nanosized hydrophilic (contact angle = 39.81) and porous materials were prepared through a solvothermal method resulting in 2D-sheets of plates of several hundred nanometer size (SEM and TEM) and B17 nm thickness (AFM) built upon 3D-architectures.…”

“…Luo and collaborators used the composite N-CDs@PCN-224 for the detection of pesticides such as glyphosate in distilled water and spiked water samples, and cereal samples (rice, millet). 101 They encapsulated N-doped carbon dots (N-CDs) inside PCN-222 and used fluorescence and colorimetric methods to detect glyphosate (Fig. 10).…”