Enhanced nonlinear optical characteristics of copper-ion-doped double crossover DNAs

Byeongho Park, Byung Jic Lee, Sreekantha Reddy Dugasani, Youngho Cho, Chulki Kim, Minah Seo, Taikjin Lee, Young Min Jhon, Jaebin Choi, Seok Lee, Sung Ha Park, Seong Chan Jun, Dong Il Yeom, Fabian Rotermund, Jae Hun Kim

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The modification of deoxyribonucleic acid (DNA) samples by sequencing the order of bases and doping copper ions opens the possibility for the design of novel nanomaterials exhibiting large optical nonlinearity. We investigated the nonlinear characteristics of copper-ion doped double crossover DNA samples for the first time to the best of our knowledge by using Z-scan and four-wave mixing methods. To accelerate the nonlinear characteristics, we prepared two types of unique DNA nanostructures composed of 148 base pairs doped with copper ions with a facile annealing method. The outstanding third-order nonlinear optical susceptibility of the copper-ion-doped DNA solution, 1.19 × 10-12 esu, was estimated by the conventional Z-scan measurement, whereas the four-wave mixing experiment was also investigated. In the visible spectral range, the copper-ion-doped DNA solution samples provided competent four-wave mixing signals with a remarkable conversion efficiency of -4.15 dB for the converted signal at 627 nm. The interactions between DNA and copper ions contribute to the enhancement of nonlinearity due to structural and functional changes. The present study signifies that the copper-ion-doped double crossover DNA is a potential candidate as a highly efficient novel material for further nonlinear optical applications.

Original languageEnglish
Pages (from-to)18089-18095
Number of pages7
Issue number43
Publication statusPublished - 2015 Nov 21

Bibliographical note

Publisher Copyright:
© 2015 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)


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