Synthesis of poly(2,6-dimethyl-1,4-phenylene oxide) derivatives in water using water-soluble copper complex catalyst with natural ligands

Chen, Chi‐Wei; Lin, I-Hong; Lin, Chun-Ping; Lin, Jen-Lien; Horie, Masaki

doi:10.1016/j.polymer.2013.08.023

Cited by 18 publications

(12 citation statements)

References 32 publications

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“…As shown in Fig. 5a , a two-electron transfer step first occurs between PhOH and PMS, similar to the common oxidative polymerization reaction of PhOH catalyzed by a copper-ammonia complex and with O 2 as the oxidant in the polymer synthesis field 28 , 43 (Supplementary Note 3 ). This direct electron transfer would result in the formation of phenoxonium ions, which might be stabilized on the catalyst surface and then undergo instantaneous resonance transfer to form a positively charged center on the carbon at the ortho - and para - positions of phenolic hydroxyl 44 , 45 .…”

Section: Resultsmentioning

confidence: 74%

Simultaneous nanocatalytic surface activation of pollutants and oxidants for highly efficient water decontamination

et al. 2022

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Removal of organic micropollutants from water through advanced oxidation processes (AOPs) is hampered by the excessive input of energy and/or chemicals as well as the large amounts of residuals resulting from incomplete mineralization. Herein, we report a new water purification paradigm, the direct oxidative transfer process (DOTP), which enables complete, highly efficient decontamination at very low dosage of oxidants. DOTP differs fundamentally from AOPs and adsorption in its pollutant removal behavior and mechanisms. In DOTP, the nanocatalyst can interact with persulfate to activate the pollutants by lowering their reductive potential energy, which triggers a non-decomposing oxidative transfer of pollutants from the bulk solution to the nanocatalyst surface. By leveraging the activation, stabilization, and accumulation functions of the heterogeneous catalyst, the DOTP can occur spontaneously on the nanocatalyst surface to enable complete removal of pollutants. The process is found to occur for diverse pollutants, oxidants, and nanocatalysts, including various low-cost catalysts. Significantly, DOTP requires no external energy input, has low oxidant consumption, produces no residual byproducts, and performs robustly in real environmental matrices. These favorable features render DOTP an extremely promising nanotechnology platform for water purification.

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Section: Resultsmentioning

confidence: 74%

Simultaneous nanocatalytic surface activation of pollutants and oxidants for highly efficient water decontamination

et al. 2022

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“…In addition, PPO synthesis and substitution is relatively simple. 50,51 Several research groups have synthesized and characterized PPO-based AEMs when TMBA is incorporated into the polymer structure (PPO-TMA) and a wide variety of conditions and methods were employed to evaluate their chemical stabilities in alkaline medium (Table 1). More importantly, all the reported ex situ stability studies in the literature were performed in aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Chemical stability of poly(phenylene oxide)-based ionomers in an anion exchange-membrane fuel cell environment

et al. 2018

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“…Poly(phenylene oxides) (PPOs) are widely used as matrix resins for the production of printed circuit boards (PCBs) in the electronics industry because they can be easily synthesized and display attractive properties, including low water absorption, good resistance against acids and alkalis, and low dielectric constant ( D κ < 2.6). − However, their weak resistance to organic solvents, low glass transition temperature ( T g ) and high coefficient of thermal expansion (CTE) hinder their applications. To improve the properties of PPOs, many efforts have been made.…”

Section: Introductionmentioning

confidence: 99%

Biobased Anethole-Functionalized Poly(phenylene oxides): New Low Dielectric Materials with High T_g and Good Dimensional Stability

Wang

Tao

Zhou

et al. 2018

ACS Sustainable Chem. Eng.

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A series of modified poly(phenylene oxides) (PPOs) with low dielectric constant, high T g and good dimensional stability were developed. These polymers were synthesized by treating brominated PPOs with a biobased anethole and polymerized at a high temperature in the presence of a peroxide. When the molar ratios of anethole in the PPO were 0.2, 0.35 and 0.5, respectively, the cross-linked PPOs displayed low dielectric constants of less than 2.74 and high T g (more than 220 °C). In particular, the PPO with 0.5 molar ratio of anethole exhibited a coefficient of thermal expansion (CTE, 23.4 ppm/°C) that is comparable to copper foil (ca. 18 ppm/°C). This result indicated that the modified PPOs are suitable for the production of copper-cladded laminates in electronic industry. Moreover, compared to a commercial PPO having a T g of 153 °C and CTE of 155.8 ppm/°C, the modified PPOs with anethole units possessed a higher thermostability. Considering that PPOs are widely used in the electronics industry, this contribution offers a new approach to prepare high-performance materials using a biobased feedstock.

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Synthesis of poly(2,6-dimethyl-1,4-phenylene oxide) derivatives in water using water-soluble copper complex catalyst with natural ligands

Cited by 18 publications

References 32 publications

Simultaneous nanocatalytic surface activation of pollutants and oxidants for highly efficient water decontamination

Simultaneous nanocatalytic surface activation of pollutants and oxidants for highly efficient water decontamination

Chemical stability of poly(phenylene oxide)-based ionomers in an anion exchange-membrane fuel cell environment

Biobased Anethole-Functionalized Poly(phenylene oxides): New Low Dielectric Materials with High T_g and Good Dimensional Stability

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Synthesis of poly(2,6-dimethyl-1,4-phenylene oxide) derivatives in water using water-soluble copper complex catalyst with natural ligands

Cited by 18 publications

References 32 publications

Simultaneous nanocatalytic surface activation of pollutants and oxidants for highly efficient water decontamination

Simultaneous nanocatalytic surface activation of pollutants and oxidants for highly efficient water decontamination

Chemical stability of poly(phenylene oxide)-based ionomers in an anion exchange-membrane fuel cell environment

Biobased Anethole-Functionalized Poly(phenylene oxides): New Low Dielectric Materials with High Tg and Good Dimensional Stability

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Product

Resources

About

Biobased Anethole-Functionalized Poly(phenylene oxides): New Low Dielectric Materials with High T_g and Good Dimensional Stability