Nanomaterial-Embedded DNA Films on 2D Frames

Karthikeyan Mariyappan, Anshula Tandon, Suyoun Park, Samanth Kokkiligadda, Jayeon Lee, Soojin Jo, Eswaravara Prasadarao Komarala, Sanghyun Yoo, Prathamesh Chopade, Hee Jin Choi, Chang Won Lee, Sohee Jeon, Jun Ho Jeong, Sung Ha Park

Research output: Contribution to journalArticlepeer-review


Recently, 3D printing has provided opportunities for designing complex structures with ease. These printed structures can serve as molds for complex materials such as DNA and cetyltrimethylammonium chloride (CTMA)-modified DNA that have easily tunable functionalities via the embedding of various nanomaterials such as ions, nanoparticles, fluorophores, and proteins. Herein, we develop a simple and efficient method for constructing DNA flat and curved films containing water-soluble/thermochromatic dyes and di/trivalent ions and CTMA-modified DNA films embedded with organic light-emitting molecules (OLEM) with the aid of 2D/3D frames made by a 3D printer. We study the Raman spectra, current, and resistance of Cu2+-doped and Tb3+-doped DNA films and the photoluminescence of OLEM-embedded CTMA-modified DNA films to better understand the optoelectric characteristics of the samples. Compared to pristine DNA, ion-doped DNA films show noticeable variation of Raman peak intensities, which might be due to the interaction between the ion and phosphate backbone of DNA and the intercalation of ions in DNA base pairs. As expected, ion-doped DNA films show an increase of current with an increase in bias voltage. Because of the presence of metallic ions, DNA films with embedded ions showed relatively larger current than pristine DNA. The photoluminescent emission peaks of CTMA-modified DNA films with OLEMRed, OLEMGreen, and OLEMBluewere obtained at the wavelengths of 610, 515, and 469 nm, respectively. Finally, CIE color coordinates produced from CTMA-modified DNA films with different OLEM color types were plotted in color space. It may be feasible to produce multilayered DNA films as well. If so, multilayered DNA films embedded with different color dyes, ions, fluorescent materials, nanoparticles, proteins, and drug molecules could be used to realize multifunctional physical devices such as energy harvesting and chemo-bio sensors in the near future.

Original languageEnglish
Pages (from-to)2812-2818
Number of pages7
JournalACS Applied Bio Materials
Issue number6
StatePublished - 20 Jun 2022
Externally publishedYes


  • 3D printer
  • DNA film
  • frame
  • optoelectrical characteristics
  • photoluminescence


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