Abstract
Purified natural DNA extracted from Salmon sperm can only be dissolved in water; it is not soluble in any other organic solvent. Therefore, in this study, the structure of DNA was modified and its solubility was changed. The preparation of organic-soluble DNA was carried out by precipitating the purified DNA in water with the cationic surfactant cetyltrimethylammonium chloride (CTMA). The resulting DNA-lipid complex shows good solubility in alcohol, which allows the fabrication of thin films for studying the photophysical properties of DNA in a solid state. The absorption and photoluminescence (PL) behaviors of CTMA-DNA and polymethylmethacrylate (PMMA) doped with (E)-2-(2-(4-(diethylamino)styryl)-4H-pyran-4-ylidene)malononitrile (DCM) were investigated. In addition, different PL spectral behaviors with differing concentrations of DCM in two different host materials were observed. These behaviors were explained by a mechanism based on intercalation or groove binding of fluorescent dye into the base pairs or aliphatic side-chain moieties of CTMA-DNA.
Original language | English |
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Pages (from-to) | 5417-5423 |
Number of pages | 7 |
Journal | Polymer |
Volume | 49 |
Issue number | 25 |
DOIs | |
Publication status | Published - 2008 Nov 24 |
Keywords
- CTMA-DNA
- Natural DNA
- PMMA
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry