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DNA coated with cationic fullerene derivative. A possible microwire in water
S Takenaka1, K Yamashita, M Takagi
1Department of Chemical Systems and Engineering, Kyushu University, Fukuoka, Japan.
Nucleic Acids Symposium Series
|April 26, 2000
Abstract:
Fullerene derivative 2 carrying pyridinium cation bound to sonicated calf thymus DNA in water. The binding ratio was 1 fullerene unit to 1 phosphate residue, giving the complex where DNA strand is seemingly coated with electron-conducting fullerenes. Cyclic voltammetry shows three-step redox couples in the complex, and the current peaks were broadened and shifted to positive side as compared to uncomplexed 2. Binding of 2 onto grooves of DNA double helix was suggested.