Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Nitric Oxide Detection of Fe(DTC)3-hybrizided CdSe Quantum Dots Via Fluorescence Energy Transfer

  • Chang-Yeoul, Kim (Nano-composite Materials Center, Korea Institute of Ceramic Engineering and Technology)
  • Received : 2022.11.02
  • Accepted : 2022.12.22
  • Published : 2022.12.28
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Abstract

We successfully synthesize water-dispersible CTAB-capped CdSe@ZnS quantum dots with the crystal size of the CdSe quantum dots controlled from green to orange colors. The quenching effect of Fe(DTC)3 is very efficient to turn off the emission light of quantum dots at four molar ratios of the CdSe quantum dots, that is, the effective covering the surface of quantum dots with Fe(DTC)3. However, the reaction with Fe(DTC)3 for more than 24 h is required to completely realize the quenching effect. The highly quenched quantum dots efficiently detect nitric oxide at nano-molar concentration of 110nM of NO with 34% of recovery of emission light intensity. We suggest that Fe(DTC)3-hybridized CdSe@ZnS quantum dots are an excellent fluorescence resonance energy transfer probe for the detection of nitric oxide in biological systems.

Keywords

Acknowledgement

The authors are appreciated for the financial support by the project of nano-material development of Korean national research foundation (NRF-2021M3H4A6A03103774) and the strategic material development program of Korea Institute of Ceramic Engineering and Technology (KPP 21003)

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