| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1525778 | Materials Chemistry and Physics | 2010 | 6 Pages |
Abstract
A transparent poly (vinyl alcohol) (PVA) nanocomposite thin film (30-50Â nm) reinforced with core/shell cadmium selenide (CdSe)/zinc sulfide (ZnS) quantum dots (QDs) was fabricated by a drop-casting method. A narrow peak at â¼556Â nm observed in the UV-vis spectrum indicates the uniformly dispersed QDs in the PVA matrix. FT-IR analysis indicates the interaction between the QDs and the polymer matrix. Both PVA and PVA-QDs nanocomposite thin films show polarized light dependent absorption properties with several different absorption peaks. As compared to the only fluorescent emission peak at 574Â nm of QDs, the pure PVA and PVA-DDs nanocomposites show an excitation wavelength dependent fluorescent emission property.
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Authors
Baoting Suo, Xin Su, Ji Wu, Daniel Chen, Andrew Wang, Zhanhu Guo,