Interface Interactions in Conjugated Polymer Composite with Metal Oxide Nanoparticles

Abstract

This study presents the preparation, characterization, and properties of a new composite containing cerium oxide nanoparticles and a conjugated polymer. CeO2 nanoparticles prepared using the co-precipitation method were dispersed into the conjugated polymer, prepared using the palladium-catalyzed Suzuki–Miyaura cross-coupling reaction. The interface interactions between the two components and the resultant optoelectronic properties of the composite are demonstrated. According to transmission electron microscopy and X-ray absorption spectroscopy, the dispersion of CeO2 nanoparticles in the polymer matrix strongly depends on the CeO2 nanoparticle concentration and results in different degrees of charge transfer. The photo-induced charge transfer and recombination processes were studied using steady-state optical spectroscopy, which shows a significant fluorescence quenching and red shifting in the composite. The higher photo-activity of the composite as compared to the single components was observed and explained. Unexpected room temperature ferromagnetism was observed in both components and all composites, of which the origin was attributed to the topology and defects.

Construction of a Highly Efficient and Durable 1D Ternary CdS/ZnS/Pt Nanohybrid Catalyst for Photocatalytic CO2 Reduction into Chemical Fuels under Solar Light Irradiation

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Optical characterizations of PMMA/metal oxide nanoparticles thin films: bandgap engineering using a novel derived model

“…Nevertheless, as the MO NPs are introduced in PMMA thin films, the absorption edge shifts towards lower energy and as a result, a substantial reduction in the band gap energy is noticed. This red shift may be attributed to the ability of nanocomposite to enhance the charge transfer between MO NPs and PMMA host material that leads to a drastic change in the band structure of the nanocomposite [ 53 ]. The transmittance of PMMA thin film is about 92% and decreases as the MO NPs are injected into the PMMA matrix as demonstrated by Figure 2 consistent with other pioneering studies [ 10 , 54 , 55 , 56 , 57 ].…”

Optical and Electrical Properties of Polystyrene/Poly‐methyl methacrylate Polymeric Blend Filled with Semiconductor and Insulator Nanofillers

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