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.
Original language | English |
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Article number | 71180J |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 7118 |
DOIs | |
Publication status | Published - 2008 |
Event | Optical Materials in Defence Systems Technology V - Cardiff, Wales, United Kingdom Duration: 2008 Sept 15 → 2008 Sept 16 |
Keywords
- DCM
- DNA-CTMA
- Natural DNA
- PA-CTMA
- Photoluminescence
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering