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AIST TODAYNo.21 Summer 2006 [ PDF:4MB ]

Contents List Biomass Energy Research Hot Line In Brief

Synthesis of Unique High Quality Fluorescence Quantum Dots for the Biochemical Measurements

We have succeeded in the synthesis of unique high quality fluorescent quantum dots, and nano-biohybrid materials for protein and DNA/RNA measurements are developed using the quantum dots. The nano-hybrid materials can be applied for detection of trace amounts of proteins using antibodies (immunoblotting). The sensitivity of the method was drastically improved.
Figure 1
Figure 1: Fluorescence emitted from quantum dots.
Blue fluorescence can be emitted from small particles of approximately 2 nm in diameter, green from ~3 nm particles, yellow from ~4 nm particles, and red from large particles of ~5 nm.
The wavelength of the excitation light is 365 nm.
Figure 2
Figure 2: Fluorescence spectra depending on the size of quantum dots.

Relational Information

AIST TODAY Vol.6 , No.6 (2006) p.26-27

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