Interaction of the CdSe quantum dots with plant cell walls

Daniela Djikanović, Aleksandar Kalauzi, Milorad Jeremić, Jianmin Xu, Miodrag Mićić, Jeffrey D. Whyte, Roger M. Leblanc, Ksenija Radotić

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

There is an increasing application of quantum dots (QDs) in plant science, as markers for the cells or their cell walls (CWs). In a plant cell the CW is a first target place for external agents. We studied interaction of CdSe QDs with CWs isolated from a conifer - Picea omorika (Panč) Purkyně branch. Binding of CdSe QDs was followed by using fluorescence microscopy, fluorescence and FT-IR spectroscopy. The aim of the study was to see whether the QDs induce structural changes in the CW, as well as to find out which kind of interactions between QDs and CWs occur and to which particular constituent polymers QDs preferably bind. The isolated CW is an appropriate object for study of the interactions with nanoparticles. The results show that in the CW, CdSe predominantly binds to cellulose, via OH groups and to lignin, via the conjugated C. C/C-C chains. The differences in interaction of wet and dry CWs with QDs/chloroform were also studied. In the reaction of the dry CW sample with QDs/chloroform, hydrophobic interactions are dominant. When water was added after QDs/chloroform, hydrophilic interactions enable a partial reconstruction of the C. C chains. The results have an implication on the use of the QDs in plant bio-imaging.

Original languageEnglish (US)
Pages (from-to)41-47
Number of pages7
JournalColloids and Surfaces B: Biointerfaces
Volume91
Issue number1
DOIs
StatePublished - Mar 1 2012

Keywords

  • CdSe quantum dots
  • Fluorescence spectroscopy
  • Lignin
  • Plant cell walls
  • Spectral deconvolution

ASJC Scopus subject areas

  • Biotechnology
  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

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  • Cite this

    Djikanović, D., Kalauzi, A., Jeremić, M., Xu, J., Mićić, M., Whyte, J. D., Leblanc, R. M., & Radotić, K. (2012). Interaction of the CdSe quantum dots with plant cell walls. Colloids and Surfaces B: Biointerfaces, 91(1), 41-47. https://doi.org/10.1016/j.colsurfb.2011.10.032