Effect of binding mode on the photoluminescence of CTMA-DNA doped with (E)-2-(2-(4-(diethylamino)styryl)-4H-pyran-4-ylidene)malononitrile
- Authors
- Lee, Jung Eun; Do, Eui Doo; Lee, U. Ra; Cho, Min Ju; Kim, Kung Hwan; Jin, Jung-Il; Shin, Dong Hee; Choi, Suk-Ho; Choi, Dong Hoon
- Issue Date
- 24-11월-2008
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Natural DNA; CTMA-DNA; PMMA
- Citation
- POLYMER, v.49, no.25, pp.5417 - 5423
- Indexed
- SCIE
SCOPUS
- Journal Title
- POLYMER
- Volume
- 49
- Number
- 25
- Start Page
- 5417
- End Page
- 5423
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/122389
- DOI
- 10.1016/j.polymer.2008.10.003
- ISSN
- 0032-3861
- 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. (C) 2008 Elsevier Ltd. All rights reserved.
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