Patent ID: 9738888
Date: 2017-08-22
CPC Classifications: B01J,C12N,C12Q

Claim:
1. A process for retrieval of a nucleotide sequence, comprising: in solution, mixing an iron chloride tetrahydrate with an iron (III) chloride hexahydrate, to form a mixture; adding an ammonium hydroxide to the mixture and stirring to form maghemite nanoparticles; stirring the maghemite nanoparticles in the solution with an inorganic acid, a surfactant and a monomer precursor of a conducting polymer; initiating polymerization of the monomer precursor by adding the inorganic acid and an oxidizing agent to the stirred solution and further stirring to yield polyaniline/maghemite nanocomposites; adding the nanocomposites to a first aqueous solution of the nucleotide sequence and stirring so as to electrostatically interact the nanocomposites with the nucleotide sequence; and weakening the electrostatic interaction between the nanocomposites and the nucleotide sequence to recover the nanocomposites independently of the nucleotide sequence.