Tunable near white light photoluminescence of lanthanide ion doped DNA lattices

Title
Tunable near white light photoluminescence of lanthanide ion doped DNA lattices
Authors
Sreekantha Reddy Dugasani박병호Bramaramba GnapareddySreedhara Reddy Pamanji유상현이근우이석전성찬김재헌김철기박성하
Keywords
DNA; lanthanide ion; photoluminescence
Issue Date
2015-06
Publisher
RSC advances
Citation
VOL 5, NO 69, 55839-55846
Abstract
Formore 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 off unctional 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.
URI
http://pubs.kist.re.kr/handle/201004/49901
ISSN
20462069
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE