Poly (vinyl alcohol) thin film filled with CdSe-ZnS quantum dots: Fabrication, characterization and optical properties

Baoting Suo; Xin Su; Ji Wu; Daniel Chen; Andrew Wang; Zhanhu Guo

doi:10.1016/j.matchemphys.2009.08.054

Poly (vinyl alcohol) thin film filled with CdSe-ZnS quantum dots: Fabrication, characterization and optical properties

Baoting Suo, Xin Su, Ji Wu, Daniel Chen, Andrew Wang, Zhanhu Guo

Biochemistry, Chemistry, & Physics

Research output: Contribution to journal › Article › peer-review

100 Scopus citations

Abstract

A transparent poly (vinyl alcohol) (PVA) nanocomposite thin film (30-50 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 ∼556 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 574 nm of QDs, the pure PVA and PVA-DDs nanocomposites show an excitation wavelength dependent fluorescent emission property.

Original language	English
Pages (from-to)	237-242
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	119
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2009.08.054
State	Published - Jan 15 2010

Keywords

Composite materials
Optical materials
Optical properties
Quantum dots

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10.1016/j.matchemphys.2009.08.054

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title = "Poly (vinyl alcohol) thin film filled with CdSe-ZnS quantum dots: Fabrication, characterization and optical properties",

abstract = "A transparent poly (vinyl alcohol) (PVA) nanocomposite thin film (30-50 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 ∼556 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 574 nm of QDs, the pure PVA and PVA-DDs nanocomposites show an excitation wavelength dependent fluorescent emission property.",

keywords = "Composite materials, Optical materials, Optical properties, Quantum dots",

author = "Baoting Suo and Xin Su and Ji Wu and Daniel Chen and Andrew Wang and Zhanhu Guo",

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TY - JOUR

T1 - Poly (vinyl alcohol) thin film filled with CdSe-ZnS quantum dots

T2 - Fabrication, characterization and optical properties

AU - Suo, Baoting

AU - Su, Xin

AU - Wu, Ji

AU - Chen, Daniel

AU - Wang, Andrew

AU - Guo, Zhanhu

PY - 2010/1/15

Y1 - 2010/1/15

N2 - A transparent poly (vinyl alcohol) (PVA) nanocomposite thin film (30-50 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 ∼556 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 574 nm of QDs, the pure PVA and PVA-DDs nanocomposites show an excitation wavelength dependent fluorescent emission property.

AB - A transparent poly (vinyl alcohol) (PVA) nanocomposite thin film (30-50 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 ∼556 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 574 nm of QDs, the pure PVA and PVA-DDs nanocomposites show an excitation wavelength dependent fluorescent emission property.

KW - Composite materials

KW - Optical materials

KW - Optical properties

KW - Quantum dots

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DO - 10.1016/j.matchemphys.2009.08.054

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VL - 119

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JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1-2

ER -

Poly (vinyl alcohol) thin film filled with CdSe-ZnS quantum dots: Fabrication, characterization and optical properties

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