Jump to main content
Jump to site search

Issue 69, 2015
Previous Article Next Article

Tunable near white light photoluminescence of lanthanide ion (Dy3+, Eu3+ and Tb3+) doped DNA lattices

Author affiliations

Abstract

For more than two decades, structural DNA nanotechnology has been investigated, yet researchers still have not clearly determined the functional changes and the applicability of DNA structures resulting from the introduction of a variety of ions. Lanthanide ions, such as Dy3+, Eu3+ and Tb3+, are interesting rare earth ions that have unique characteristics applicable to photonics. Here, we have constructed lanthanide ion doped double-crossover DNA lattices, a new class of functional DNA lattices, grown on a silica substrate. Deformation-free lattices were fabricated on a given substrate, and dopant ions were introduced to study their photoluminescence characteristics. The photoluminescence of the lanthanide ion-doped DNA lattices exhibited broad emission spectra in the visible region and a tendency of near white light emission composed of various colours. The intensity of the distinct spectral lines produced by the photoluminescence increased as the doping concentration of the ions reached the critical point, and the intensity then decreased with a further increase in the ions. Photoluminescence quenching was also observed when the excitation wavelength increased. These phenomena are the result of energy transfer between the DNA and the dopant ions. Finally, we make use of chromaticity diagrams to identify the colour coordinates of the luminescence produced by the lanthanide ion-doped DNA lattices, and this information may be useful to construct efficient bio-photonic devices or sensors in the future.

Graphical abstract: Tunable near white light photoluminescence of lanthanide ion (Dy3+, Eu3+ and Tb3+) doped DNA lattices

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 23 Apr 2015, accepted on 17 Jun 2015 and first published on 17 Jun 2015


Article type: Communication
DOI: 10.1039/C5RA07360J
Citation: RSC Adv., 2015,5, 55839-55846
  •   Request permissions

    Tunable near white light photoluminescence of lanthanide ion (Dy3+, Eu3+ and Tb3+) doped DNA lattices

    S. R. Dugasani, B. Park, B. Gnapareddy, S. R. Pamanji, S. Yoo, K. W. Lee, S. Lee, S. C. Jun, J. H. Kim, C. Kim and S. H. Park, RSC Adv., 2015, 5, 55839
    DOI: 10.1039/C5RA07360J

Search articles by author