The application of external stimuli such as light to induce controlled radical polymerization reactions has important implications in the field materials science. In this study, photoactivation trithiocarbonates (TTCs) (i.e., conventional RAFT agents) by visible (∼460 nm) is investigated, and ability TTCs control under complete absence exogenous photoinitiators or catalysts demonstrated for first time. By selectively exciting spin-forbidden n → π* electronic transition, polyacrylates...

Recent developments in polymerization reactions utilizing thiocarbonylthio compounds have highlighted the surprising versatility of these unique molecules. The increasing popularity reversible addition–fragmentation chain transfer (RAFT) radical as a means producing well‐defined, ‘controlled’ synthetic polymers is largely due to its simplicity implementation and availability wide range compatible reagents. However, novel modes activation can expand technique beyond traditional system (i.e.,...

This perspective highlights the challenges and opportunities in interfacial evaporation, heat water management, materials synthesis, device development for solar steam generation.

Hydrogels are emerging as an ideal platform for sustainable water and energy nexuses due to their low-cost, ease of processing, versatile functions, unique structural networks, high adaptability. The establishment a solar-thermal-electricity system assumes critical importance in achieving effective solar utilization. This review focuses on recent advances hydrogel-enabled steam generation (SGG) atmospheric harvesting (AWH) systems discuss extended applications renewable energy, such...

Inspired by an ancient reducing method used in textile production, sodium hydrosulfite was to reduce graphite oxide as efficient agent our work. The reduced materials were characterized x-ray photoelectron spectroscopy, thermogravimetric analysis, wide-angle scattering, Raman solid state 13C NMR spectroscopy and electrical conductivity measurements, respectively. results showed that can be with a few minutes, degree of reduction comparable those achieved hydrazine. It provides could prepare...

A novel reduced iron metal-organic framework nanoparticle with cytotoxicity specific to cancer cells is presented. This was prepared via a hydrothermal method, using hydroquinone, and finally conjugated folic acid (namely, rMOF-FA). The synthesized shows the controlled release of in an acidic ex-vivo environment. Iron present on rMOF-FA released into solution can react high levels hydrogen peroxide found specifically increase hydroxyl radical concentration. radicals oxidize proteins, lipids,...

Abstract The ultrasonic irradiation of aqueous solution is demonstrated to be a suitable source initiating radicals for controlled radical polymerization when conducted in the presence thiocarbonylthio‐containing reversible addition–fragmentation chain transfer (RAFT) agent. This allows highly “green” method externally regulated/controlled with potentially broad scope polymerizable monomers and/or polymer structures.

Ultrathin metal-organic framework (MOF) nanosheets show great potential in various separation applications. In this study, MOF are incorporated as a gutter layer high-performance, flexible thin-film composite membranes (TFCMs) for CO2 separation. (∼3-4 nm) were prepared via surfactant-assisted method and subsequently coated onto porous support by vacuum filtration. This produced an ultrathin (∼25 nm), extremely flat layer, which serves highly permeable with reduced gas resistance when...

A new strategy for one-pot synthesis of ABC type triblock copolymers via a combination "click chemistry" and atom transfer nitroxide radical coupling (ATNRC) reaction was suggested, poly(tert-butyl acrylate)-block-polystyrene-block-poly(ethylene oxide) (PtBA−PS−PEO) acrylate)-block-polystyrene-block-poly(ϵ-caprolactone) (PtBA−PS−PCL) were successfully prepared by this method. The precursors with predetermined number-average molecular weight low polydispersity indices, such as PS α-alkyne...

A 30 nm thick polymeric membrane on a metal–organic framework substrate was fabricated <italic>via</italic> bottom-up approach, exhibiting excellent CO₂/N₂ separation performance.

The photolytic stability of RAFT agents under blue LED irradiation has been investigated with regard to photopolymerization reactions.

The metal-free semiconductor, graphitic carbon nitride (g-C3N4), was introduced into RAFT polymerization for the first time. production of linear polyacrylate and polyacrylamide has been achieved via PET-RAFT using g-C3N4 as a photoactive organocatalyst without prior deoxygenation. resulting polymers display controlled molecular weights, narrow polymer dispersities, high end-group fidelity exemplified by 1H NMR analysis, MALDI-TOF-MS measurement, chain extension experiment. Temporal control...

Two-dimensional nanosheets as building blocks for the preparation of high-performance gas separation membranes.

In this study, we reported on the discovery that trithiocarbonates (RAFT agents) can act as intrinsic photocatalyst to significantly reduce oxygen level in a controlled radical polymerization under visible light irridation.

Staphylococcus aureus (S. aureus) is a Gram-positive pathogen causing variety of infections in humans and animals. Extensive use antibiotics has led to the emergence methicillin-resistant S. (MRSA). As an alternative antibacterial agent against drug-resistant aureus, lytic phage, designated SLPW, was isolated from fecal sewage pig farm. The SLPW morphologically classified under Podoviridae contains double-stranded DNA genome. genome 17861 bp (29.35% G+C) containing 20 open reading frames...

Defect-free and cross-linked ultra-thin (sub 100 nm) film composite membranes have been prepared. The membrane materials formed exhibited significantly high CO₂ permeances of over 1200 GPU as well excellent CO₂/N₂ selectivity 40.

A recently developed visible light mediated photocontrolled radical polymerization technique using trithiocarbonates (i.e., conventional RAFT agents) as the sole control agent in absence of additional photoinitiators or catalysts is utilized for synthesis core cross-linked star (CCS) polymer nanoparticles. The attractive features this photopolymerization system, including high end-group fidelity at (near) complete monomer conversion, are exploited to facilitate a high-yielding, one-pot...

Abstract Photo‐mediation offers unparalleled spatiotemporal control over controlled radical polymerizations (CRP). Photo‐induced electron/energy transfer reversible addition–fragmentation chain (PET‐RAFT) polymerization is particularly versatile owing to its oxygen tolerance and wide range of compatible photocatalysts. In recent years, broadband‐ near‐infrared (NIR)‐mediated have been particular interest their potential for solar‐driven chemistry biomedical applications. this work, we...