Method for synthesizing gold-doped fluorescent quantum dots

A technology of fluorescent quantum dots and a synthesis method, which is applied in the field of nanomaterial preparation to achieve the effects of strong fluorescent signal, improved biocompatibility, and uniform size distribution
CN101747899AInactive Publication Date: 2010-06-23ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for synthesizing gold-doped fluorescent quantum dots, which performs water phase synthesis on a cadmium salt, a compound of gold, a mercury salt, a sulfhydryl compound and newly-prepared tellurium potassium hydride under an anaerobic condition at the temperature of between 90 and 130 DEG C to obtain CdnAuxTez and near infrared CdnAuxHgyTez gold-doped fluorescent quantum dots. The gold-doped fluorescent quantum dots synthesized by the method are slightly poisonous, have strong fluorescence signals, have an emission spectrum positioned at visible and near infrared light, contain the gold element, and can be used for performing analytical studies correlative with a gold nano material; and the wavelength can be adjusted according to the proportion of componentsand the reaction time. The method dopes gold which has no bio-toxicity into semiconductor quantum dots to improve the biological compatibility of the quantum dots and reduce the nano-toxicity. The method can be applied in the fields of biological analytic detections, biomedical imaging and the like.
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Description

technical field

[0001] The invention belongs to the field of nanomaterial preparation technology, biological analysis and detection technology and biomedical imaging technology, and relates to Cd n Au x Te z and Cd n Au x Hg y Te z A synthetic method of gold-doped fluorescent quantum dots (n, x, y, z in the chemical formula represent the ratio of moles). Background technique

[0002] Quantum dots are semiconductor nanocrystals with unique optoelectronic properties. Compared with traditional organic dyes and fluorescent proteins, quantum dots have the following advantages: high brightness and photostability, the fluorescence emission wavelength can be adjusted by changing the size and composition, and the emission wavelength range can range from visible light to infrared. As a new type of fluorescent probe, quantum dots have great application potential in the fields of bioanalysis detection technology and biomedical imaging technology.

[0003] In vivo imaging using q...

Claims

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