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Fluorescent CdTe quantum dots (QDs) modified polymer microspheres with different functional groups were prepared by self-assembly between the carboxyl of 3-mercaptopropionic acid (MPA) on the surface of QDs and basic functional groups (4-vinylpyridine (VPy), N-isopropylacrylamide (NIPAM) or acrylamide (AAM)) of the microspheres. 10 nm of CdTe QDs in diameters were prepared in aqueous solution when...
A DNA biosensor system based on fluorescence resonance energy transfer (FRET) of CdTe quantum dots (QDs) as energy donors modified molecular beacons was presented in this paper when organic dyes, 4-(4'-(dimethylamino) phenylazo) benzoic acid (DABCYL) or black hole quencher 1 (BHQ1), as energy acceptors. CdTe QDs with 3 nm in diameters were prepared in water and were linked to molecular beacons (MB)...
The two-photon excited fluorescence from CdSe/ZnS quantum dots on the surface of a two-dimensional SiN photonic crystal was investigated. With photonic crystal, the enhancement and the blue shift of two-photon excited fluorescence was observed.
Brilliant blue mono-dispersed ZnS QDs have been synthesized using hydrothermal synthesis. The synthetic procedure provides some advantageous synthetic features such as a short preparation time with control over product dimensions using green conditions. These can then be organized into different special arrangements and their PL properties as well as XRD, TEM and UV-vis characterization are reported...
Quantum dots (QDs) are emerged as a new class of fluorescent probes for many biological and biomedical applications. Comparing with conventional fluorescent probes, they have substantial advantages such as bright fluorescence, narrow emission, broad excitation band and high photostability. However, little is known about the toxicity of nanoscale particles to biological systems. In this study, the...
Quantum dots (QDs) are emerged as a new class of fluorescent probes for many biological and biomedical applications. Comparing with conventional fluorescent probes, they have substantial advantages such as bright fluorescence, narrow emission, broad excitation band and high photostability. However, little is known about the toxicity of nanoscale particles to biological systems. In this study, the...
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