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In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers
A straight synthetic route to fabricate hybrid nanocomposite films of well-dispersed CdS nanocrystals (NCs) in poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) is reported. A soluble cadmium complex [Cd(SBz)(2)](2)·MI, obtained by incorporating a Lewis base (1-methylimidaz...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Springer
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3847301/ https://www.ncbi.nlm.nih.gov/pubmed/24015753 http://dx.doi.org/10.1186/1556-276X-8-382 |
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author | Laera, Anna Maria Resta, Vincenzo Piscopiello, Emanuela Miceli, Valerio Schioppa, Monica Scalone, Anna Grazia Benedetto, Francesca Di Tapfer, Leander |
author_facet | Laera, Anna Maria Resta, Vincenzo Piscopiello, Emanuela Miceli, Valerio Schioppa, Monica Scalone, Anna Grazia Benedetto, Francesca Di Tapfer, Leander |
author_sort | Laera, Anna Maria |
collection | PubMed |
description | A straight synthetic route to fabricate hybrid nanocomposite films of well-dispersed CdS nanocrystals (NCs) in poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) is reported. A soluble cadmium complex [Cd(SBz)(2)](2)·MI, obtained by incorporating a Lewis base (1-methylimidazole, MI) on the cadmium bis(benzyl)thiol, is used as starting reagent in an in situ thermolytic process. CdS NCs with spherical shape nucleate and grow well below 200°C in a relatively short time (30 min). Photoluminescence spectroscopy measurements performed on CdS/MEH-PPV nanocomposites show that CdS photoluminescence peaks are totally quenched inside MEH-PPV, if compared to CdS/PMMA nanocomposites, as expected due to overlapping of the polymer absorption and CdS emission spectra. The CdS NCs are well-dispersed in size and homogeneously distributed within MEH-PPV matrix as proved by transmission electron microscopy. Nanocomposites with different precursor/polymer weight ratios were prepared in the range from 1:4 to 4:1. Highly dense materials, without NCs clustering, were obtained for a weight/weight ratio of 2:3 between precursor and polymer, making these nanocomposites particularly suitable for optoelectronic and solar energy conversion applications. |
format | Online Article Text |
id | pubmed-3847301 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-38473012013-12-06 In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers Laera, Anna Maria Resta, Vincenzo Piscopiello, Emanuela Miceli, Valerio Schioppa, Monica Scalone, Anna Grazia Benedetto, Francesca Di Tapfer, Leander Nanoscale Res Lett Nano Express A straight synthetic route to fabricate hybrid nanocomposite films of well-dispersed CdS nanocrystals (NCs) in poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) is reported. A soluble cadmium complex [Cd(SBz)(2)](2)·MI, obtained by incorporating a Lewis base (1-methylimidazole, MI) on the cadmium bis(benzyl)thiol, is used as starting reagent in an in situ thermolytic process. CdS NCs with spherical shape nucleate and grow well below 200°C in a relatively short time (30 min). Photoluminescence spectroscopy measurements performed on CdS/MEH-PPV nanocomposites show that CdS photoluminescence peaks are totally quenched inside MEH-PPV, if compared to CdS/PMMA nanocomposites, as expected due to overlapping of the polymer absorption and CdS emission spectra. The CdS NCs are well-dispersed in size and homogeneously distributed within MEH-PPV matrix as proved by transmission electron microscopy. Nanocomposites with different precursor/polymer weight ratios were prepared in the range from 1:4 to 4:1. Highly dense materials, without NCs clustering, were obtained for a weight/weight ratio of 2:3 between precursor and polymer, making these nanocomposites particularly suitable for optoelectronic and solar energy conversion applications. Springer 2013-09-09 /pmc/articles/PMC3847301/ /pubmed/24015753 http://dx.doi.org/10.1186/1556-276X-8-382 Text en Copyright © 2013 Laera et al.; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Nano Express Laera, Anna Maria Resta, Vincenzo Piscopiello, Emanuela Miceli, Valerio Schioppa, Monica Scalone, Anna Grazia Benedetto, Francesca Di Tapfer, Leander In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers |
title | In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers |
title_full | In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers |
title_fullStr | In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers |
title_full_unstemmed | In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers |
title_short | In situ growth of well-dispersed CdS nanocrystals in semiconducting polymers |
title_sort | in situ growth of well-dispersed cds nanocrystals in semiconducting polymers |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3847301/ https://www.ncbi.nlm.nih.gov/pubmed/24015753 http://dx.doi.org/10.1186/1556-276X-8-382 |
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