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.
We prepared graphitic carbon nanotubes (Au-CPNTs) embedded with gold particles of 5-6 nm in diameter. First, poly(p-phenylenevinylene( (PPV) nanotubes containing Au particles were synthesized by chemical vapro deposition polymerization (CBDP) of α,α'-dichloro-p-xylene, which was carbonized at 850°C. Field emission properties of the Au-CPNTs were found to be excellent revealing a low turn-on electric field (2.1 V/μm) and a high amplification factor (11,500). In contrast, the values for virgin CPNTs were 3.1 V/μm and 4,910, respectively.
Conference Committee Involvement (11)
Nanobiosystems: Processing, Characterization, and Applications X
9 August 2017 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications IX
28 August 2016 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications VIII
10 August 2015 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications VII
18 August 2014 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications VI
25 August 2013 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications V
12 August 2012 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications IV
21 August 2011 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications III
4 August 2010 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications II
5 August 2009 | San Diego, California, United States
Nanobiosystems: Processing, Characterization, and Applications
12 August 2008 | San Diego, California, United States
Nanobiotronics
26 August 2007 | San Diego, California, United States
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