Photoluminescence with Peaked Structure: Inherent to Nanoparticles or Resulting From Impurities in Sample Vial Caps?

We show that fluorescence emission in the visible spectral range reported in the case of many nanoparticles, polymers, complexes and liquid crystals with molecular type signatures could originate from the organic impurities leaching from the caps of glass vials. Organic impurities? Through a series...

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Bibliographic Details
Published in:Chemphyschem 2021-06, Vol.22 (12), p.1167-1169
Main Authors: Tripathi, Vijay, Linga Reddy, Panyala, Panchakarla, Leela S.
Format: Article
Language:English
Subjects:
Fluorescence
Impurities
Leaching
Liquid crystals
Nanoparticles
organic impurities
organic solvents
Photoluminescence
polypropylene caps
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Summary:We show that fluorescence emission in the visible spectral range reported in the case of many nanoparticles, polymers, complexes and liquid crystals with molecular type signatures could originate from the organic impurities leaching from the caps of glass vials. Organic impurities? Through a series of photoluminescence spectroscopic investigations, it is demonstrated that the structured photoluminescence emission in the visible spectral range reported for many nanoparticles, polymers, complexes and liquid crystals may be attributable to organic impurities leaching from the caps of glass vials. IPA=isopropyl alcohol.
ISSN:1439-4235
1439-7641
DOI:10.1002/cphc.202100110