Method for improving fluorescence performance of carbon quantum dots

• Main Authors: Long Peng, Ping Yiyu, Wang Zhaogan, Feng Wei
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2016
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

The invention relates to a method for improving the fluorescence performance of carbon quantum dots. The method comprises the following steps: weighing a mixed solution of methane sulfonic acid and ethylene glycol, weighing alumina of which the mass is 0.1 to 0.5 times the mass of the methane sulfonic acid, feeding the mixed solution and the alumina in a fluorescent carbon quantum dot solution, and performing stirring; centrifugally separating an obtained solution at rotating speed of 10,000 to 16,000 revolutions; performing dialysis on supernatant obtained by centrifugation in a dialysis bag, replacing water every 4 to 8 hours, and collecting the fluorescent carbon quantum dot solution of the purified solution, so as to obtain an enhanced fluorescent carbon quantum dot solution. According to the method, the fluorescence intensity of ordinary carbon quantum dot and esterified carbon quantum dot solutions is measured by virtue of a fluorescence spectrometer to determine that the fluorescence intensity can be m