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Traditional fluorescent labelling techniques has severe photo-bleaching problem such as organic dyes and fluorescent
protein. Quantum dots made up of traditional semiconductor (CdSe/ZnS) material has sort of biological toxicity. This
research has developed novel Cd-free quantum dots divided into semiconductor (Indium phosphide, InP) and noble metal
(Gold). Former has lower toxicity compared to traditional quantum dots. Latter consisting of gold (III) chloride (AuCl3)
and toluene utilizes sonochemical preparation and different stimulus to regulate fluorescent wavelength. Amphoteric
macromolecule surface technology and ligand Exchange in self-Assembled are involved to develop hydrophilic
nanomaterials which can regulate the number of grafts per molecule of surface functional groups. Calcium phosphate (CaP)
nanoparticle (NP) with an asymmetric lipid bilayer coating technology developed for intracellular delivery and labelling
has synthesized Cd-free quantum dots possessing high brightness and multi-fluorescence successfully. Then, polymer
coating and ligand exchange transfer to water-soluble materials to produce liposome nanomaterials as fluorescent probes
and enhancing medical applications of nanotechnology.
Ying-Feng Liu,Wei-Ling Hung,Tzh-Yin Hou,Hsiu-Ying Huang, andCheng-An J. Lin
"Development of cadmium-free quantum dot for intracellular labelling through electroporation or lipid-calcium-phosphate", Proc. SPIE 9884, Nanophotonics VI, 988428 (19 April 2016); https://doi.org/10.1117/12.2225864
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Ying-Feng Liu, Wei-Ling Hung, Tzh-Yin Hou, Hsiu-Ying Huang, Cheng-An J. Lin, "Development of cadmium-free quantum dot for intracellular labelling through electroporation or lipid-calcium-phosphate," Proc. SPIE 9884, Nanophotonics VI, 988428 (19 April 2016); https://doi.org/10.1117/12.2225864