A robust and luminescent covalent organic framework as a highly sensitive and selective sensor for the detection of Cu²⁺ions

Abstract

A hydrogen bond assisted azine-linked covalent organic framework, COF-JLU3, was synthesized under solvothermal conditions. Combining excellent crystallinity, porosity, stability and luminescence, it can be the first COF as a fluorescent sensor for toxic metal ions, exhibiting high sensitivity and selectivity to Cu(2+).

Regulating the topology of 2D covalent organic frameworks by the rational introduction of substituents

“…By analyzing the literature, one can conclude that the topology of a COF is dictated by the symmetries of the building blocks used, although the introduction of substituents into the skeletons of the building blocks can result in a change in the size and properties of the pores in a COF. 3e,4d,11 It seems that the incorporation of a substituent rarely has an influence on the topology of a COF once the skeleton(s) of the building blocks is/are selected. In most cases, this is reasonable because only one network structure can be predicted for each combination of the building blocks.…”

Toward Two‐Dimensional π‐Conjugated Covalent Organic Radical Frameworks

“…[1] COFs have shown promising applications for molecular storage and separation, [2] optoelectronics, [3] energy storage, [4] drug delivery, [5] sensing, [6] proton conductivity [7] and catalysis. [1] COFs have shown promising applications for molecular storage and separation, [2] optoelectronics, [3] energy storage, [4] drug delivery, [5] sensing, [6] proton conductivity [7] and catalysis.…”

Fabrication of a hydrazone‐linked covalent organic framework‐bound capillary column for gas chromatography separation

“…The syntheses of COFs have attracted significant interest due to their outstanding properties such as low mass density, controllable pore structure, inherent porosity, large specific surface area, and high stability . These properties make COFs great potential such as in gas storage , catalysis , proton and ion conduction , chemical sensing and drug delivery .…”