Optical properties of DNA-CTMA and PA-CTMA doped with (E)-2- (2-(4-(diethylamino)styryi)-4H/-pyan-4-ylideiie)maloiionitriie (DCM)

Dong Hoon Choi, Jung Eun Lee, Young Wan Kwon, U. Ra Lee, Min Ju Cho, Kyung Hwan Kim, Jung Il Jin

Research output: Contribution to journalConference articlepeer-review


The salmon sperm DNA is not soluble in any of the organic solvent. Therefore, we modified the structure of natural DNA and changed its solubility. The organic soluble DNA-CTMA was obtained by precipitating the DNA in water with a cationic surfactant such as a lipid of cetyltrimethylammonium chloride (CTMA). The resulting DNA-lipid complex shows good solubility in alcohol and allows us to fabricate thin films for studying their optical and photophysical properties in a solid state. The absorption and photoluminescence (PL) behaviors of DNA-CTMA and CTMA- polyacrylic acid (PA) doped with (E)-2-(2-(4- (diethylamino)styryl)-4H-pyran-4-ylidene)malononitrile (DCM) were studied. We observed the different absorption and PL spectral behaviors with the contents of DCM in two different host materials. This was explained by a proper mechanism based on intercalation or groove binding of fluorescent dye into the base pairs of DNA-CTMA.

Original languageEnglish
Article number71180J
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2008
EventOptical Materials in Defence Systems Technology V - Cardiff, Wales, United Kingdom
Duration: 2008 Sep 152008 Sep 16


  • DCM
  • Natural DNA
  • Photoluminescence

ASJC Scopus subject areas

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

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