Title | Structural studies of thin films of semiconducting nanoparticles in polymer matrices |
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Publication Type | Articolo su Rivista peer-reviewed |
Year of Publication | 2007 |
Authors | Di Luccio, Tiziana, Piscopiello E., Laera Anna Maria, and Antisari M.V. |
Journal | Materials Science and Engineering C |
Volume | 27 |
Pagination | 1372-1376 |
ISSN | 09284931 |
Keywords | Bioelectronics, Catalysis, Copolymers, Cyclo-olephin copolymer (COC), Nanoparticles, Nanoscale materials, Polymer films, Polymer matrix, Semiconducting nanoparticles, Thin films, Zinc sulfide |
Abstract | Ordered films of nanoscale materials are issue of wide interest for applications in several fields, such as optics, catalysis, and bioelectronics. In particular, semiconducting nanoparticles incorporation in a processable polymer film is an easy way to manipulate such materials for their application. We deposited thin layers of cadmium sulphide (CdS) and zinc sulphide (ZnS) nanoparticles embedded in a thermoplastic cyclo-olephin copolymer (COC) with elevated optical transparency and highly bio-compatible. The nanoparticles were obtained by thiolate precursors previously dispersed in the polymer upon thermal treatment at temperatures ranging between 200 and 300 °C depending on the desired size. The precursor/polymer solutions were spin-coated in order to get thin films. The spinning conditions were changed in order to optimise the layer thickness and uniformity. The samples were mainly characterised by X-ray reflectivity (XRR) and by high-resolution transmission electron microscopy (HRTEM) analyses. The thinnest layer we have deposited is 8 nm thick, as evaluated by XRR. The HRTEM measurements showed that the nanoparticles have quasi-spherical shape without evident microstructural defects. The size of the nanoparticles depends on the annealing temperature, e.g. at 232 °C the size of the CdS nanoparticles is about 4-5 nm. © 2006 Elsevier B.V. All rights reserved. |
Notes | cited By 14 |
URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-34547687510&doi=10.1016%2fj.msec.2006.07.018&partnerID=40&md5=de49b00d10bdfc517909125e2c2c8633 |
DOI | 10.1016/j.msec.2006.07.018 |
Citation Key | DiLuccio20071372 |