A piperazine-linked robust N-rich covalent organic polymer (COP), SMCOP-1, was synthesized by a catalyst-free method and characterized by Fourier transform infrared (FTIR), 13 C CP/MAS, X-ray photoelectron spectroscopy (XPS), and powder X-ray diffraction (PXRD). This polymeric material can work as an efficient platform for removing toxic Hg 2+ from wastewater. This system showed >97% Hg 2+ removal, as confirmed by inductively coupled plasma atomic emission spectroscopy (ICP-AES), with a maximum uptake capacity of 1329 mg g −1 . Hg 2+ incorporation inside SMCOP-1 was confirmed by XPS, energydispersive spectrometry (EDS), and elemental mapping of field emission scanning electron microscopy (FE-SEM). The high Hg 2+ removal capacity of SMCOP-1 can be attributed to the strong noncovalent interaction between the Hg 2+ ion and the binding sites of the covalent organic polymer, as suggested by density functional theory (DFT) calculations, noncovalent interaction (NCI) analysis, and the electrostatic potential (ESP) map. The material's recyclability was studied for up to four consecutive cycles, and it was observed that it retained a high removal capacity without any change in the structure and morphology, as confirmed by FTIR and FE-SEM.

The hydrophobic organogel G8GE with metallogel formation and shape forming ability is used in the removal of Hg(ii), Cd(ii) and Pb(ii) from contaminated water with low cost-effected reusability.

Here we report the synthesis of a thermally and chemically robust novel ionic porous organic polymer (iPOP-ANT) with exchangeable Cl- ions by a one-step condensation reaction. The polymer works as...

A bis(μ-phenoxo)-bridged dicopper(ii) complex capable of oxidizing catechol with the highest efficiency amongst any bis(μ-phenoxo)-bridged dicopper(ii) complexes is reported.

Excited state intramolecular proton transfer (ESIPT) process based organic fluorophores provided opportunity to develop large Stokes shifted multifunctional fluorescence systems for white light emitting, chemosensing and bioimaging applications. In this...