Gold-doped fluorescent quantum dot synthetic method

The invention provides a gold-doped fluorescent quantum dot synthetic method. Under the anaerobic condition and at the temperature of 90-130 DEG C, CdnAuxTez and near-infrared CdnAuxHgyTex gold-doped fluorescent quantum dots are synthesized in aqueous phase mode by a compound of cadmium salt and gold, mercuric salt, sulfhydryl compound and newly prepared tellurium potassium hydride. The gold-doped fluorescent quantum dots are small in toxicity and strong in fluorescent signals, an emission spectrum is arranged outside near infrared, and the gold-doped fluorescent quantum dots contain the gold element and can be used for conducting relevant analysis researches of gold nanometer materials. Wavelength can be adjusted through the ratio of composition and reaction time. By means of the gold-doped fluorescent quantum dot synthetic method, gold without biotoxicity is doped into semi-conductor quantum dots, biocompatibility of quantum dots is improved, and nanometer toxicity is reduced. The gold-doped fluorescent quantum dot synthetic method can be applied to the fields of bioanalysis detection, biomedical imaging and the like.