Journal
POLYMERS
Volume 10, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/polym10030310
Keywords
quantum dots; host-guest interactions; xerogel
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Funding
- National Natural Science Foundation of China [51373174, 51573187]
- West Light Foundation of CAS
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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 beta-cyclodextrin (beta CD) 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.
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