Synthesis of Cu-doped polyaniline nanocomposites (nano Cu@PANI) via the H2O2-promoted oxidative polymerization of aniline with copper salt

Chen, Ying; Zhang, Qitao; Jing, Xiaobi; Han, Jie; Yu, Lei

doi:10.1016/j.matlet.2019.01.143

Cited by 33 publications

(20 citation statements)

References 22 publications

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“…The aromatic amino groups of the monomers were oxidized by copper ions and connected with each other, and then redox reaction of Cu(I)/Cu(II) ions promoted the conversion to form coupling product; finally, the nitrogen related groups of polymer were coordinated with Cu(I)/Cu(II) ions and self-assemblied into uniform Cu-PPT nanospheres (Scheme S1). − Highly dispersed Cu-PPT NPs with evenly distributed bulges were observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) (Figures b,c and S1). The TEM elemental mapping results (Figure d) exhibited the homogeneous distribution of Cu, verifying the integration of Cu with the organic polymer.…”

Section: Resultsmentioning

confidence: 65%

“…The N 1s peaks of Cu-PPT at 397.6, 399.8, 401.1, and 402.1 eV were consistent with C–N, CN, and C–N–C linkage, and unreacted amino groups (C–NH 2 ), respectively (Figure S3c). − It was observed from the UV–vis spectra that a broad and strong absorption band appeared in the near-infrared region (Figure g). The band around 246 cm –1 was caused by the π–π* transition of benzenoid rings, and the peak at 442 cm –1 verified the formation of quinoid imine units (−CN−). , The absorption band at 665 nm was ascribed to the characteristic Q-band absorption of porphyrin molecules.…”

Section: Resultsmentioning

confidence: 95%

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Copper-Doped Nanoscale Covalent Organic Polymer for Augmented Photo/Chemodynamic Synergistic Therapy and Immunotherapy

Cai

Liu

et al. 2020

Bioconjugate Chem.

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Due to the specific tumor microenvironment (TME) and immunosuppressive state of cancer cells, conventional antitumor therapies face severe challenges, such as high rates of recurrence and metastasis. Herein, Cu-PPT nanoparticles were synthesized based on copper acetate, p-phenylenediamine, and 5,10,15,20-tetra-(4-aminophenyl)porphyrin via oxidative coupling reaction for the first time, and the resultant product was used for synergistic photothermal therapy (PTT), photodynamic therapy (PDT), and chemodynamic therapy (CDT). The polymer nanoparticles exhibited excellent photodynamic and photothermal effect with a photothermal conversion efficacy of 40.1% under 650 and 808 nm laser irradiation, respectively. Encapsulated Cu(I)/Cu(II) ions permitted Cu-PPT with glutathione (GSH) peroxidase-mimicking, catalase-mimicking, and Fenton-like activity to regulate TME. Depletion of overexpressed GSH would reduce antioxidant capacity, generated O2 could relieve hypoxia for enhancing PDT, and hyperthermia from PTT could promote the yield of ·OH. This multifunctional nanosystem with cascade reactions could inhibit tumor growth and activate immune responses effectively. By further combining with antiprogrammed death-ligand 1 (anti-PD-L1) checkpoint blockade therapy, distant tumor growth and cancer metastasis were successfully suppressed.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 95%

Copper-Doped Nanoscale Covalent Organic Polymer for Augmented Photo/Chemodynamic Synergistic Therapy and Immunotherapy

Cai

Liu

et al. 2020

Bioconjugate Chem.

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“…Recently, copper-based catalysts, owing to their impressive advantages over other transition metal catalysts, have received a significant attention. Their lower cost, readily availability, insensitivity to air, easy handling, and generation of less waste make them versatile catalysts in various organic reaction like synthesis of enzymes, [28] oxidative polymerization of aniline, [29] rearrangement reactions of aldoxime, [30] and reductions of nitroarenes. [20] Furthermore, copper is the second abundant transition metal inside human body and can be easily metabolized by the body metabolic system.…”

Section: Introductionmentioning

confidence: 99%

A copper diimine‐based honeycomb‐like porous network as an efficient reduction catalyst

Ahmad

Shah

Arshad

et al. 2020

Applied Organom Chemis

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Funding information Higher Education Commission of Pakistan Nitrophenols are among the widely used industrial chemicals worldwide; however, their hazardous effects on environment are a major concern nowadays. Therefore, the conversion of environmentally detrimental p-nitrophenol (PNP) to industrially valuable p-aminophenol (PAP), a prototype reaction, is an important organic transformation reaction. However, the traditional conversion of PNP to PAP is an expensive and environmentally unfriendly process. Here, we report a honeycomb-like porous network with zeolite-like channels formed by the self-organization of copper, 1,10-phenanthroline, 4,4 0-bipyridine, and water. This porous network effectively catalyzed the transformation of hazardous PNP to pharmaceutically valued PAP. In the presence of complex, PNP to PAP conversion occurred in a few minutes, which is otherwise a very sluggish process. To assess the kinetics, the catalytic conversion of PNP to PAP was studied at five different temperatures. The linearity of lnC t /C o versus temperature plot indicated pseudo-first-order kinetics. The copper complex with zeolite like channels may find applications as a reduction catalyst both on laboratory and industrial scales and in green chemistry for the remediation of pollutants.

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“…The PANI has been synthesized using chemical oxidative polymerization, chemical bath deposition, non-emulsion, electrochemical, interfacial polymerization method [18][19][20][21][22][23]. These methods have serious drawbacks such as the polymerization of aniline monomer which generates unnecessary precipitations causing wastage of material.…”

Section: Introductionmentioning

confidence: 99%

Capacitive property studies of inexpensive SILAR synthesized polyaniline thin films for supercapacitor application

et al. 2019

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The polyaniline (PANI) is an eco-friendly conductive polymer which has been considered for diverse applications. The partially oxidized phase of the PANI is useful for the charge storage application. Here, a unique nanograin/nanofiber structured PANI was grown on inexpensive stainless steel (SS) current collector by the simple oxidative polymerization process and its charge storage properties were systematically investigated. For that, the inexpensive successive ionic layer adsorption reaction method was used to grow a uniform nanostructured PANI on the SS conductor. This evolution of the nanostructure was studied with the Field emission scanning electron microscope. Furthermore, the as-prepared PANI was confirmed by the X-ray diffraction and the Fourier-transform infrared spectroscopy. In the half cell electrochemical testing, the prepared PANI exhibited a maximum specific capacitance of 710 F g −1 with a specific discharge capacity of 119 mAh −1 at 0.2 mA cm −2 in 1 M H 2 SO 4 for the supercapacitor application. Also, by using the power-law relation it was observed that, in a charging and a discharging current, initially a contribution of the diffusive faradaic reactions is more as compared with the surface capacitive non-faradaic reactions.

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Synthesis of Cu-doped polyaniline nanocomposites (nano Cu@PANI) via the H2O2-promoted oxidative polymerization of aniline with copper salt

Cited by 33 publications

References 22 publications

Copper-Doped Nanoscale Covalent Organic Polymer for Augmented Photo/Chemodynamic Synergistic Therapy and Immunotherapy

Copper-Doped Nanoscale Covalent Organic Polymer for Augmented Photo/Chemodynamic Synergistic Therapy and Immunotherapy

A copper diimine‐based honeycomb‐like porous network as an efficient reduction catalyst

Capacitive property studies of inexpensive SILAR synthesized polyaniline thin films for supercapacitor application

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