Binding enabled catalytic activation of SO₂ by copper koneramine complexes under ambient conditions

Abstract

Reported is a simple and sustainable strategy to catalytically convert SO2 gas into sulfate under ambient conditions utilizing ferrocene (SO2 + 2Fc + aerial O2 → Fc2SO4) and aerial oxygen.

Investigating the photosensitivity of koneramines for cell imaging and therapeutic applications

“…To eliminate the challenges associated with the fragile hemiaminal ether group, we have synthesized a new variant of koneramine ligand (L-H). 22 The L-H has similar characteristics to the traditional koneramine (L-OMe) except for the fragile hemiaminal ether group (Fig. 1).…”

“…The anthracene appended koneramine (L An ) was obtained in a good yield by a three-step straight-forward synthesis procedure that was adapted from our previous report. 22 This ligand, L An was fully characterized using 1 H and 13 C NMR spectroscopy (Fig. S1-S6 †).…”

“…Our group has recently reported a new family of potential tridentate ligands known as koneramines, [20][21][22] which contain a 2,2′-dipicolylamine scaffold. Initially, koneramines were stereoselectively self-assembled from a multicomponent onepot reaction of mono-N-substituted ethylenediamine and pyridine-2-carbinal in alcohol/thiol.…”

SO2-based thermoplastic polyurethane elastomer: synthesis, microstructure, and mechanical properties

“…3,4 An effective method of managing SO 2 levels is to utilize them in chemical manufacturing (sulfuric acid, sulfuryl chloride, and metal sulfite salts), food preservatives, bleach, synthetic chemistry, and SO 2 -based polymers. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] For the past 80 years, studies on the development of SO 2 -based copolymers have been conducted; SO 2 -based copolymers are obtained from the copolymerization of SO 2 with various monomers via free-radical or ionic polymerization initiated by light or catalysts, 12,[20][21][22][23][24] and are widely used in degradable materials, electron beam lithography, positive photoresists, and sulfur cycles. [25][26][27][28] Recently, there has been growing attention towards polysulfites (PPSs), an important category of SO 2 -based polymers that are synthesized via the copolymerization of SO 2 and epoxides.…”

Reduction of Sulfur Dioxide to Sulfur Monoxide by Ferrous Porphyrin**

“…Most of these approaches require H 2 /CO gas, high temperatures and supporting metal oxide heterogeneous catalysts [4] . Although there are some examples of transition‐metal complexes with bound SO 2 and SO, [5] reduction of SO 2 by molecular systems is rare and needs to be explored to marshal newer methods for SO x valorization [6] . A host of microbial organisms recycle SO x as a part of the geochemical sulfur cycle and, recently, these organisms have been used to valorize sulfur from an alkaline extract of flue gas, which contains SO 2 [7] .…”