Molecular structure and EL application of highly ordered DNA/Ru complex

Norihisa Kobayashi; Kazuki Matsumoto; Shintarou Inoue

doi:10.1117/12.801476

9 September 2008 Molecular structure and EL application of highly ordered DNA/Ru complex

Norihisa Kobayashi, Kazuki Matsumoto, Shintarou Inoue

Proceedings Volume 7040, Nanobiosystems: Processing, Characterization, and Applications; 70400K (2008) https://doi.org/10.1117/12.801476
Event: NanoScience + Engineering, 2008, San Diego, California, United States

Abstract

DNA-Ru(bpy)₃²⁺ complex was prepared to study molecular structure and its EL characteristics. Ru(bpy)₃²⁺ was associated with duplex of DNA by not only electrostatic interaction but also intercalation in the aqueous solution. Single-molecular structure of DNA-Ru(bpy)₃²⁺ complex was analyzed with AFM. We found network structure of DNA-Ru(bpy)₃²⁺ complex on the mica substrate, which is similar to naked DNA. The height of DNA-Ru(bpy)₃²⁺ complex on the mica substrate was ranging from 0.8 to 1.6 nm, which was higher than the naked DNA (0.5-1.0 nm). This indicates that single-molecular DNA-Ru(bpy)₃²⁺ complex forms network structure on the mica substrate. DNA-Ru(bpy)₃²⁺ complex was sandwiched with ITO and aluminum electrodes to analyze EL properties. It was revealed that the EL device composed of DNA- Ru(bpy)₃²⁺ complex exhibited extremely faster response than the other Ru(bpy)₃²⁺ based EL devices. The emission mechanism was discussed.

Citation Download Citation

Norihisa Kobayashi, Kazuki Matsumoto, and Shintarou Inoue "Molecular structure and EL application of highly ordered DNA/Ru complex", Proc. SPIE 7040, Nanobiosystems: Processing, Characterization, and Applications, 70400K (9 September 2008); https://doi.org/10.1117/12.801476

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