Tunable Fluorescent Gold Nanocluster

Abstract

The present invention discloses a tunable fluorescent gold nanocluster. The tunable fluorescent gold nanocluster is formed by mixing gold trichloride (AuCl 3 ) with toluene solvent without reductant. The tunable fluorescent gold nanocluster emits blue fluorescence that can be red shifted through ultrasonic vibration. The spectral region of the tunable fluorescent gold nanocluster is from 400 nm to 550 nm.

1 . A tunable fluorescent gold nanocluster, formed by mixing gold trichloride (AuCl 3 ) with toluene solvent without reductant. 
     
     
         2 . The nanocluster according to  claim 1 , wherein the fluorescence spectral region of the nanocluster is from 400 nm to 500 nm. 
     
     
         3 . The nanocluster according to  claim 1 , wherein the fluorescence spectral region of the nanocluster is red shifted if the nanocluster is processed by ultrasonic vibration. 
     
     
         4 . The nanocluster according to  claim 3 , wherein the fluorescence spectral region of the nanocluster is from 400 nm to 550 nm. 
     
     
         5 . The nanocluster according to  claim 3 , wherein the fluorescence spectral region of the nanocluster after ultrasonic vibration is from 425 nm to 525 nm. 
     
     
         6 . The nanocluster according to  claim 3 , wherein the fluorescence spectral region of the nanocluster after ultrasonic vibration is from 450 nm to 550 nm. 
     
     
         7 . The nanocluster according to  claim 1 , wherein ultrasonic vibration is used to adjust and control the particle diameter of the nanocluster. 
     
     
         8 . The nanocluster according to  claim 7 , wherein the particle diameter of the nanocluster increases as the time of being processed by ultrasonic vibration increases. 
     
     
         9 . The nanocluster according to  claim 3 , wherein the time of being processed by ultrasonic vibration is less than or equal to 180 minutes. 
     
     
         10 . The nanocluster according to  claim 1 , wherein the nanocluster is used as a bioprobe applied in the application selected from the group consisting of the following: fluorescent biological label, clinical imaging contrast agent and clinical detection, trace and therapy.