Graphene-quantum-dots-based ratiometric fluorescent probe for visual detection of copper ion.
A novel dual-photoluminescence probe for Cu(2+) has been developed, in which the graphene quantum dots with blue emission and CdTe QDs with yellow emission act as internal standard and probe, respectively. The photoluminescence probe exhibited selective sensing for Cu(2+) with a limit of detection (3SD/k) of 5.3 × 10(-8) M and showed its potential application in visual imaging. The results indicated that the constructed probe can be employed for sensing Cu(2+) by the naked eye, and also for monitoring intracellular Cu(2+).
College of Material Science and Engineering, Huaqiao University, Xiamen 361021, China. sunxy@hqu.edu.cn.
Xiangying
X
Sun
Pengchao
P
Liu
Lulu
L
Wu
Bin
B
Liu
D019187:Cadmium Compounds / Q000737:chemistry; D045744:Cell Line, Tumor; D003116:Color; D003300:Copper / Q000032:analysis* / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D006801:Humans; D045663:Quantum Dots / Q000737:chemistry*; D013691:Tellurium / Q000737:chemistry
D019187:Cadmium Compounds; D005456:Fluorescent Dyes; D006108:Graphite; D003300:Copper; D013691:Tellurium; C028337:cadmium telluride