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Issue 42, 2015
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Synthesis of CdTe/P(St-nBA-AA) pierced fluorescent microspheres

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Abstract

CdTe/P(St-nBA-AA) pierced fluorescent microspheres with a novel hollow morphology were prepared via a rapid inverse emulsion method. CdTe quantum dots (QDs), which were synthesized by a simple one-pot reflux process using thioglycolic acid as a stabilizer in an aqueous phase, were embedded into the polymer skeleton. The P(St-nBA-AA) component with a low glass transition temperature (Tg = 65 °C) was prepared by soap-free emulsion polymerization. Subsequently, the morphology, composition and spectral characteristics of the CdTe QDs and CdTe/P(St-nBA-AA) pierced fluorescent microspheres were determined by SEM, TEM, FTIR, TGA, XRD, laser particle analysis, and fluorescence spectrometry. The results indicated that the fluorescent microspheres had a relatively smooth surface and hollow internal structure. The QD content of the pierced fluorescent microspheres was 12.68%. Moreover, a synergistic effect mechanism of solvent swelling and phase transition was proposed. The formation process of pierced fluorescent microspheres was the swelling, movement, winding of the polymer chains of P(St-nBA-AA) particles, which were stabilized on the interface of the water/oil phase at temperatures higher than the Tg of the polymer component.

Graphical abstract: Synthesis of CdTe/P(St-nBA-AA) pierced fluorescent microspheres

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Article information


Submitted
07 Mar 2015
Accepted
16 Mar 2015
First published
17 Mar 2015

RSC Adv., 2015,5, 33554-33561
Article type
Paper

Synthesis of CdTe/P(St-nBA-AA) pierced fluorescent microspheres

S. Wang, H. Zhang, X. Chen, H. Li, H. Wang, P. Li, B. Zhang and Q. Zhang, RSC Adv., 2015, 5, 33554 DOI: 10.1039/C5RA04049C

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