Distance-dependent quenching and enhancing of electrochemiluminescence from a CdS:Mn nanocrystal film by Au nanoparticles for highly sensitive detection of DNA.
The quenching of electrochemiluminescence (ECL) from a CdS:Mn nanocrystal film by proximal Au nanoparticles was observed as a result of Förster energy transfer, while an enhancement of ECL takes place after hybridization with target DNA due to the energy transfer of ECL excited surface plasmon resonances in AuNPs to the CdS:Mn NCs at large separation, based on which an ultrasensitive and specific DNA biosensor was constructed.
Shan
Yun
Y
Key Lab of Analytical Chemistry for Life Science (MOE of China), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, PR China.
Xu
Jing-Juan
JJ
Chen
Hong-Yuan
HY
D015374:Biosensing Techniques / Q000379:methods; D019187:Cadmium Compounds / Q000737:chemistry*; D004247:DNA / Q000032:analysis* / Q000737:chemistry; D015342:DNA Probes / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods; D006046:Gold / Q000737:chemistry*; D049449:Luminescence; D008345:Manganese / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008954:Models, Biological; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties
D019187:Cadmium Compounds; D015342:DNA Probes; D013440:Sulfides; C034939:cadmium sulfide; D008345:Manganese; D006046:Gold; D004247:DNA