High-performance quantum dot-polymer fluorescent nano composite material and preparation method thereof

A technology of fluorescent nano-composite materials, applied in the field of high-performance quantum dot-polymer fluorescent nanocomposite materials and their preparation, can solve the problems of loss of luminescent properties and no reports of quantum dots
CN101759946AInactive Publication Date: 2010-06-30ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2010-06-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-performance quantum dot-polymer fluorescent nano composite material and a preparation method thereof. The high-performance quantum dot-polymer fluorescent nano composite material comprises polymer and quantum dot which has fluorescent property and is hybridized by silicon dioxide. The method comprises the following steps of: firstly, dissolving 1g of polymer by using a solvent or heating 1g of polymer into a molten state, then adding 0.0002-0.08g of quantum dot which has the particle diameter of 5-30 nanometers, is not modified or is modified by using silane coupling agent and is hybridized by the silicon dioxide and removing the solvent or cooling naturally after stirring for 2min-24hr to obtain the quantum dot-polymer nano composite material. The nano composite material has very strong photoinduced fluorescent property, and the mechanical property of the nano composite material is also enhanced greatly in comparison with that of a corresponding straight polymer. The high-performance quantum dot-polymer fluorescent nano composite material has simple preparation and is suitable for mass production. The invention has very good application prospect in the aspects of preparing an optical device and an optical material, replacing a traditional polymer material and the like.
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Description

technical field

[0001] The invention relates to the field of inorganic-polymer nanocomposite materials, in particular to a high-performance quantum dot-polymer fluorescent nanocomposite material and its preparation method Background technique

[0002] Quantum dots have been widely used in biomarkers, optical devices, and solar cells due to their unique size-dependent luminescence properties, broad excitation peaks, and narrow emission peaks. However, the surface of quantum dots is very fragile and easy to be destroyed during use, resulting in loss of luminescent properties. Combining quantum dots with polymers can not only maintain the characteristics of quantum dots but also have good processing properties and mechanical properties (J.Mater.Chem ., 2008, 18, 214-220; J. Am. Chem. Soc. 2007, 129, 12828-12833; Langmuir 2007, 23, 850-854). At present, there have been many reports on the compounding of quantum dots and polymers, but these reports have focused on the luminescen...

Claims

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