Metal ion sensing solution containing double crossover DNA

Byeongho Park, Sreekantha R. Dugasani, Youngho Cho, Juyeong Oh, Chulki Kim, Min Ah Seo, Taikjin Lee, Young Miin Jhon, Deok Ha Woo, Seok Lee, Seong Chan Jun, Sung Ha Park, Jae Hun Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The current study describes metal ion sensing with double crossover DNAs (DX1 and DX2), artificially designed as a platform of doping. The sample for sensing is prepared by a facile annealing method to grow the DXs lattice on a silicon/silicon oxide. Adding and incubating metal ion solution with the sensor substrate into the micro-tube lead the optical property change. Photoluminescence (PL) is employed for detecting the concentration of metal ion in the specimen. We investigated PL emission for sensor application with the divalent copper. In the range from 400 to 650 nm, the PL features of samples provide significantly different peak positions with excitation and emission detection. Metal ions contribute to modify the optical characteristics of DX with structural and functional change, which results from the intercalation of them into hydrogen bonding positioned at the center of double helix. The PL intensity is decreased gradually after doping copper ion in the DX tile on the substrate.

Original languageEnglish
Title of host publicationFifth Asia-Pacific Optical Sensors Conference, APOS 2015
EditorsByoungho Lee, Yunjiang Rao, Sang Bae Lee
ISBN (Electronic)9781628418651
Publication statusPublished - 2015
Event5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Jeju, Korea, Republic of
Duration: 2015 May 202015 May 22

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Other5th Asia-Pacific Optical Sensors Conference, APOS 2015
Country/TerritoryKorea, Republic of

Bibliographical note

Publisher Copyright:
© 2015 Copyright SPIE.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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