Synthesis of CdS Nanoparticles Dispersed Within Poly(urethane acrylate‐co‐styrene) Films Using an Amphiphilic Urethane Acrylate Nonionomer

Abstract

Summary: CdS nanoparticles dispersed within poly(urethane acrylate‐co‐styrene) (PUCS) films were prepared using amphiphilic urethane acrylate nonionomer (UAN) precursor chains, which had a poly(propylene oxide)‐based hydrophobic segment and a hydrophilic poly(ethylene oxide) segment. CdS nanoparticles were first prepared and dispersed in UAN/styrene mixtures, and then these nano‐colloid solutions could be directly converted to CdS/PUCS nanocomposite films via radical bulk polymerization process. Formation of CdS nanoparticles was confirmed by UV absorption spectra, PL emission spectra and TEM images. The size of the CdS nanoparticles was varied from 10.2 to 14.5 nm, in correlation with the increase of amount of cadmium salt in the preparation composition, which was also confirmed by a red shift in the UV and PL emission spectra. In the course of the formation of the CdS nanoparticles within the UAN/styrene mixtures, the PEO segments of UAN are microphase‐separated from the hydrophobic segments of UAN and styrene to make a complex with the cadmium cations and stabilize the CdS nanoparticles. This was also confirmed by TEM images and DMA measurements.TEM micrograph of the polyurethane acrylate films containing CdS nanoparticles, prepared using a weight fraction of cadmium acetate of 0.125 wt.‐%.magnified imageTEM micrograph of the polyurethane acrylate films containing CdS nanoparticles, prepared using a weight fraction of cadmium acetate of 0.125 wt.‐%.

Investigation of structural and electrical properties of novel CuO–PVA nanocomposite films

“…Composite materials consisting of metal nanoparticles embedded in a transparent host matrix have attracted the attention of researchers recently as advanced technological materials such as solar cells for photoelectric conversion, transistors for electronic switches [1][2][3][4][5] because of their unique optical, electronic [6], mechanical [7] and structural [8] properties. Large interfacial area between the matrix and nanofiller is a key field of interest in nanocomposites since the nanomaterials possess high aspect ratio and large surface area [9].…”

Self-assembled nanoplatform for targeted delivery of chemotherapy agents via affinity-regulated molecular interactions

“…The synthesis of UAN was previously described [40]. In brief, glycerol propoxylate (n∼5, MW ∼ 1000, Sigma Aldrich) was mixed with toluene diisocyanate (TDI, Sigma Aldrich) to react the hydroxyl groups of glycerol propoxylate and the isocyanate (-N=C=O) groups of TDI (Fig.…”

Highly Flexible and Visibly Transparent Poly(vinyl alcohol)/Calcium Zincate Nanocomposite Films for UVA Shielding Applications As Assessed by Novel Ultraviolet Photon Induced Fluorescence Quenching

“…The exponential intensification of optical material applications has opened up the technological gateway toward the design and development of novel high performance optically functional materials for future use in optical computing, to hard transparent coatings as protective or barrier layers, solar cells for photoelectric transformations, transistors for electronic switches, and so forth. − Polymer encapsulated semiconductor nanocomposite films show great promise toward optoelectronics with necessary stability and excellent processability. The ease of polymer nanocomposite (NC) based device fabrication and availability of novel morphology dependent material properties have influenced the scientific community to fabricate and evaluate the efficacy of various transparent polymer/semiconducting filler combination for electro-optic applications .…”