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Chemiluminescence resonance energy transfer in the luminol-CdTe quantum dots conjugates |
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| Authors: | Zheng Li Yongxian Wang Guoxin Zhang Yanjiang Han |
| Institution: | a Radiopharmaceutical Centre, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China b Graduate University of Chinese Academy of Sciences, Beijing 100039, China c Product and Quality Supervision and Testing Institute, Yueyang Bureau of Quality and Technical Supervision, Hunan 414000, China |
| Abstract: | The luminol-CdTe quantum dots (QDs) conjugates were prepared through the reaction between -NH2 and -COOH. The resonance energy transfer between chemiluminescence donor (luminol-H2O2 system) and quantum dots (QDs, with different emission peaks) acceptors (CRET) was investigated. The luminescence of QDs in luminol-QDs conjugates in the process of CRET was influenced by the molar ratio of luminol/QDs. It could reach higher luminescence intensity while the luminol/QDs value was 1/1. Quantum yield of QDs and overlapping areas between the emission spectrum of luminol and adsorption spectrum of QDs played important roles in the CRET efficiency of luminol-QDs conjugates. The higher CRET efficiency (21.2%) was observed when the 540 nm QDs were used as acceptors. This work will offer helpful knowledge for the CRET studies based on QDs. |
| Keywords: | CRET CdTe quantum dots Luminol Luminescence |
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