Photoluminescence Tuning in Stretchable PDMS Film Grafted Doped Core/Multishell Quantum Dots for Anticounterfeiting

The development of new luminescent materials for anticounterfeiting is of great importance, owing to their unique physical, chemical, and optical properties. The authors report the use of color‐tunable colloidal CdS/ZnS/ZnS:Mn2+/ZnS core/multishell quantum dots (QDs)‐functionalized luminescent polyd...

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Bibliographic Details
Published in:Advanced functional materials 2017-05, Vol.27 (17), p.n/a
Main Authors: Li, Fei, Wang, Xiandi, Xia, Zhiguo, Pan, Caofeng, Liu, Quanlin
Format: Article
Language:English
Subjects:
anticounterfeiting
Colloids
Color
core/multishell QDs
Emission
Energy transfer
Excitation
Grafting
Materials science
Optical properties
Photoluminescence
Polydimethylsiloxane
Quantum dots
Silicone resins
Tuning
Zinc sulfide
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Summary:The development of new luminescent materials for anticounterfeiting is of great importance, owing to their unique physical, chemical, and optical properties. The authors report the use of color‐tunable colloidal CdS/ZnS/ZnS:Mn2+/ZnS core/multishell quantum dots (QDs)‐functionalized luminescent polydimethylsiloxane film (LPF) for anticounterfeiting applications. Both luminescent QDs and as‐fabricated, stretchable, and transparent LPF show blue and orange emission simultaneously, which are ascribed to CdS band‐edge emission and the 4T1 → 6A1 transition of Mn2+, respectively; their emission intensity ratios are dependent on the power‐density of a single‐wavelength excitation source. Additionally, photoluminescence tuning of CdS/ZnS/ZnS:Mn2+/ZnS QDs in hexane or embedded in LPF can also be realized under fixed excitation power due to a resonance energy transfer effect. Tunable photoluminescence of these flexible LPF grafted doped core/shell QDs can be finely controlled and easily realized, depending on outer excitation power and intrinsic QD concentration, which is intriguing and inspires the fabrication of many novel applications. Photoluminescence tuning of stretchable polydimethylsiloxane film grafted doped core/multishell quantum dots (QDs) can be finely controlled and easily realized depending on the outer excitation power of a single‐wavelength excitation source and its intrinsic QD concentration, which is intriguing and inspires the fabrication of anticounterfeiting applications.
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.201700051