Optical properties of DNA-CTMA and PA-CTMA doped with (E)-2-(2-(4-(diethylamino)styryl)-4H-pyan-4-ylidene)malononitrile (DCM)

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

doi:10.1117/12.801711

3 October 2008 Optical properties of DNA-CTMA and PA-CTMA doped with (E)-2-(2-(4-(diethylamino)styryl)-4H-pyan-4-ylidene)malononitrile (DCM)

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

Author Affiliations +

Proceedings Volume 7118, Optical Materials in Defence Systems Technology V; 71180J (2008) https://doi.org/10.1117/12.801711
Event: SPIE Security + Defence, 2008, Cardiff, Wales, United Kingdom

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.

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Dong Hoon Choi, Jung Eun Lee, Young-Wan Kwon, U Ra Lee, Min Ju Cho, Kyung Hwan Kim, and Jung-Il Jin "Optical properties of DNA-CTMA and PA-CTMA doped with (E)-2-(2-(4-(diethylamino)styryl)-4H-pyan-4-ylidene)malononitrile (DCM)", Proc. SPIE 7118, Optical Materials in Defence Systems Technology V, 71180J (3 October 2008); https://doi.org/10.1117/12.801711

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