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Polymers 2018, 10(3), 310; https://doi.org/10.3390/polym10030310

Reusable Xerogel Containing Quantum Dots with High Fluorescence Retention

1
Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
2
College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
3
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Sichuan University, Chengdu 610065, China
*
Authors to whom correspondence should be addressed.
Received: 27 November 2017 / Revised: 2 March 2018 / Accepted: 7 March 2018 / Published: 13 March 2018
(This article belongs to the Special Issue Host-Guest Polymer Complexes)
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Abstract

Although various analytical methods have been established based on quantum dots (QDs), most were conducted in solution, which is inadequate for storage/transportation and rapid analysis. Moreover, the potential environmental problems caused by abandoned QDs cannot be ignored. In this paper, a reusable xerogel containing CdTe with strong emission is established by introducing host–guest interactions between QDs and polymer matrix. This xerogel shows high QDs loading capacity without decrease or redshift in fluorescence (the maximum of loading is 50 wt % of the final xerogel), which benefits from the steric hindrance of β-cyclodextrin (βCD) molecules. Host–guest interactions immobilize QDs firmly, resulting in the excellent fluorescence retention of the xerogel. The good detecting performance and reusability mean this xerogel could be employed as a versatile analysis platform (for quantitative and qualitative analyses). In addition, the xerogel can be self-healed by the aid of water. View Full-Text
Keywords: quantum dots; host–guest interactions; xerogel quantum dots; host–guest interactions; xerogel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Liang, X.-Y.; Wang, L.; Chang, Z.-Y.; Ding, L.-S.; Li, B.-J.; Zhang, S. Reusable Xerogel Containing Quantum Dots with High Fluorescence Retention. Polymers 2018, 10, 310.

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