A bifunctional imidazolium-functionalized ionic porous organic polymer in water remediation

Abstract

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...

Non-Noble-Metal-Based Porphyrin Covalent Organic Polymers as Additive-/Annealing-Free Electrocatalysts for Water Splitting and Biomass Oxidation

“…In the past decades, though several electrocatalysts have been developed, combining different carbon materials and transition-metal oxides to increase the catalytic activity, , the development of cost-effective electrocatalysts with higher availability of electrochemically active sites, higher stability, and lower activation energy is the focus . In this regard, covalent organic polymers, due to their high physicochemical stability, permanent porosity, and low skeleton density, have gained significant attention in various scientific fields like gas storage and utilization, − wastewater remediation, − heterogeneous catalysis, − chemical and biological sensing, , optoelectronics and energy-related applications, − and so on. Though several covalent organic polymer electrocatalysts have also been developed, − due to their lower electrical conductivity, the addition of external additives (mostly carbon materials) or thermal annealing is a must in most of the cases as they provide a graphitic base that gives the material necessary conductivity and electrochemical sites. − However, such materials are often not given much importance due to their additional cost.…”

Recent advancement in viologen functionalized porous organic polymers (vPOPs) for energy and environmental remediation

“…Redox switches are the most frequently observed molecular switch types in POPs. 25,26 These switches are susceptible to alteration when the redox potential of their surroundings alters. A variety of applications of redox switches involve the removal of substances from the environment, such as dyes, iodine, and oxoanions.…”

Exploring a Redox-Active Ionic Porous Organic Polymer in Environmental Remediation and Electrochromic Application

“…The fundamental understanding of the mechanism of the response of smart materials toward external stimuli is essential to design and fabricate such materials. − Extensive research on smart materials opens the opportunity to bring in newer technologies in the field of commercially and industrially relevant applications like smart windows, self-healing coatings, chemicals and gas separations, optical switches, artificial intelligence, electrochromic devices, etc. − Interestingly, examples of incorporation of such stimuli-responsive building blocks in the fabrication of covalent organic polymers (COPs) are relatively rare, although certain advantages of COPs are well known. Significant thermal, chemical, and tunable physicochemical stability along with pore size, large surface area, and low skeleton density remain very important among them. − In this particular work, we have utilized the advantage of incorporation of viologens, an N , N ′-disubstituted-4,4′-bipyridinium moiety, which is an electron-accepting dicationic organic structure with an excellent reversible redox property and fast electron transfer ability, to generate an ionic porous organic polymer (iPOP-Bpy). The polymer contains an electron-withdrawing triazine moiety in the core, which is a suitable electron acceptor with favorable electron-conducting properties. − The cationic nature of the polymer, nitrogen-rich structure, physicochemical stability, and presence of an aromatic skeleton make it a suitable candidate to explore its capacity for iodine adsorption.…”