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Proceedings Paper

Optical properties of DNA-CTMA and PA-CTMA doped with (E)-2-(2-(4-(diethylamino)styryl)-4H-pyan-4-ylidene)malononitrile (DCM)
Author(s): Dong Hoon Choi; Jung Eun Lee; Young-Wan Kwon; U Ra Lee; Min Ju Cho; Kyung Hwan Kim; Jung-Il Jin
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Paper Abstract

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.

Paper Details

Date Published: 3 October 2008
PDF: 8 pages
Proc. SPIE 7118, Optical Materials in Defence Systems Technology V, 71180J (3 October 2008); doi: 10.1117/12.801711
Show Author Affiliations
Dong Hoon Choi, Korea Univ. (Korea, Republic of)
Jung Eun Lee, Korea Univ. (Korea, Republic of)
Young-Wan Kwon, Korea Univ. (Korea, Republic of)
U Ra Lee, Korea Univ. (Korea, Republic of)
Min Ju Cho, Korea Univ. (Korea, Republic of)
Kyung Hwan Kim, Korea Univ. (Korea, Republic of)
Jung-Il Jin, Korea Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7118:
Optical Materials in Defence Systems Technology V
James G. Grote; Francois Kajzar; Mikael Lindgren, Editor(s)

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