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The synthesis of mono-6-thio-β-cyclodextrin capped CdTe QDs and its interaction with neutral red

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Abstract

This paper presents a novel method for the synthesis of CdTe quantum dots (QDs) capped with β-cyclodextrin in aqueous solution using both TGA and mono-6-thio-β-CD as stabilizers. The interaction between mono-6-thio-β-CD-CdTe QDs and neutral red (NR) was studied with fluorescence, UV-absorption and the resonance Rayleigh scattering spectrum. When its concentration was over 7.5 × 10−6 mol/L, the neutral red began to aggregate on the surface of the mono-6-thio-β-CD-CdTe QDs, which resulted in the mono-6-thio-β-CD-CdTe QDs particle size increasing, the sharply quenched fluorescence, and the marked increase of RRS intensity.

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Authors and Affiliations

  1. Key Laboratory on Luminescence and Realtime Analysis, Ministry of Education; School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400716, China

    Lei Wang, ShaoPu Liu, JuanJuan Peng & YouQiu He

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  1. Lei Wang
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  2. ShaoPu Liu
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  3. JuanJuan Peng
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  4. YouQiu He
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Correspondence to YouQiu He.

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Wang, L., Liu, S., Peng, J. et al. The synthesis of mono-6-thio-β-cyclodextrin capped CdTe QDs and its interaction with neutral red. Sci. China Chem. 53, 1358–1365 (2010). https://doi.org/10.1007/s11426-010-3092-2

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  • DOI: https://doi.org/10.1007/s11426-010-3092-2

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