A multifunctional statistical copolymer vesicle for water remediation

Abstract

Multifunctional statistical copolymers can be simply synthesized in one step without tedious and timeconsuming procedures. In addition, the fuzzy boundary between different functional groups in the statistical copolymers can facilitate the fabrication of new functional nanomaterials. Herein, we designed a novel multifunctional vesicle based on a statistical copolymer, poly[[2-hydroxy-3-(naphthalen-1-ylamino) propyl methacrylate]-stat-[2-(diethylamino)ethyl methacrylate]] [P(HNA 21 -stat-DEA 35 )] which can be synthesized by reversible addition-fragmentation transfer (RAFT) polymerization in one step. The HNA moiety is designed for capturing polycyclic aromatic hydrocarbons (PAHs) by π-π stacking, while the DEA moiety is engineered to immobilize gold nanoparticles for facilitating the reduction of 4-nitrophenol (4-NP) in aqueous solution. This vesicle showed excellent ability in water remediation by absorbing PAHs and accelerating the reduction of 4-nitrophenol (4-NP). Overall, this multifunctional statistical copolymer vesicle provides a new insight for designing multifunctional water remediation materials. † Electronic supplementary information (ESI) available: Synthesis, and characterization. See

Self-assembly of bis-salphen compounds: from semiflexible chains to webs of nanorings

“…Vesicles of metal-organic compounds were already observed, 19 however these compounds were specifically functionalized to give them amphiphilic abilities. Clusters of partially merging vesicles have also been reported before, 19,53 however toroidal micelles forming form such vesicles remained fused with no rods extruded.…”

pH-Responsive diblock copolymers with two different fluorescent labels for simultaneous monitoring of micellar self-assembly and degree of protonation

“…54 The hydrophobic nature of pyrene may in itself trigger self-assembly when added to a hydrophilic polymer, 55 and the inclusion of hydrophobic polyaromatic compounds has been exploited to construct a range of self-assembled structures. 56,57,58 Therefore it is important to carefully control the amount of pyrene in PGMA, as too much is likely to lead to destabilisation of the final diblock polymer aggregates. Moreover, a fluorescent dye with high quantum yield, Cresyl Violet (CV) was conjugated to the ends of the PDPA chains as a probe for chain protonation.…”

Iron(III) porphyrin catalyzed ionic liquid mediated polymerization of methylmethacrylate

“…However, these enzymes show low stability under non − physiological conditions, and are relatively expensive, whereas metalloporphyrins are stable, inexpensive and relatively more promising for various applications . Apart from enzymatic polymerization, various other strategies have been employed for the polymerization reactions such as ring opening metathesis polymerization (ROMP), free radical (along with nanoconfinement), living radical, atom transfer radical, nitroxide‐mediated (NMP), reverse addition fragmentation, electrochemical, coordination, block and statistical polymerization, but harsh reaction conditions such as corrosive chemicals, prolonged reaction time and prolonged heating were employed in all these methods. Hence, mild conditions were required for the synthesis of polymer products.…”

“…Hence, mild conditions were required for the synthesis of polymer products. The iron(III)porphyrins react with various monooxygen donors and mimic the reactions of cytochrome P450, peroxidase and related monooxygenases in milder conditions . The reactions of metalloporphyrins with H 2 O 2 have attracted much attention as H 2 O 2 is biologically important and environmentally clean oxidant, leading to formation of only water as side product.…”

“…The iron(III)porphyrins react with various monooxygen donors and mimic the reactions of cytochrome P450, peroxidase and related monooxygenases in milder conditions. [21][22][23] The reactions of metalloporphyrins with H 2 O 2 have attracted much attention as H 2 O 2 is biologically important and environmentally clean oxidant, leading to formation of only water as side product. We have also reported the free − radical polymerization of acrylamide catalyzed by water − soluble metalloporphyrins in the presence of β − diketones in an organic and organized reaction media.…”