Abstract
AbstractWater‐soluble thioglycolic acid (TGA)‐capped CdTe quantum dots (QDs) were synthesized in aqueous medium, and then encapsulated in a silica nanosphere by copolymerization of the TGA‐capped CdTe conjugated with (3‐aminopropyl)triethoxysilane (APS‐CdTe conjugate), free (3‐aminopropyl)triethoxysilane (=3‐(triethoxysilyl)propan‐1‐amine; APS), and tetraethyl orthosilicate (TEOS) in a H2O‐in‐oil reverse microemulsion consisting of Triton X‐100, octanol, cyclohexane, and H2O in the presence of aqueous NH3 solution. The characterizations by transmission electron microscopy (TEM) and luminescence spectroscopy shows that the luminescent nanoparticles are monodisperse, spherical, and uniform in size, ca. 50 nm in diameter with a regular core–shell structure. In addition, primary amino groups directly introduced to the nanoparticle's surface by using free APS in the nanoparticle preparation enable the nanoparticles to be used easier as a biolabel. The effects of pH and metal cations on the luminescence of the nanoparticles also suggest that the new nanoparticles could be useful probes for luminescent sensings of pH and Cu2+ ion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
