DNA-conductive polymer blends for applications in biopolymer-based field effect transistors (FETs)

Abstract

This paper demonstrates the use of DNA based biopolymers as semiconducting thin films in organic field effect transistors. The "doping" of the DNA molecules with conductive polymers leads to a significant decrease of the overall resistivity in the blend with effective free charge carrier mobilities comparable to other conductive polymers such as Pentacene and P3HT. Baytron P as well as single wall carbon nanotubes (SWCNT) have been explored as " doping" conductive polymers.

Biotronics

“…This molecule, with its helical symmetric strands, huge range of possible base pair sequences and the large range of possible molecular weights (from <100 kDa to >8000 kDa, (where Da = Dalton, the unit of molecular weight in grams/mol), has challenged efforts to use it in designing and fabricating electro-optic (52) , photonic (48,87) and electronic specimens (30,64) . The key to success in these efforts is the availability of detailed data on the electrical (81,77) , electro-optical and optical properties (84,72) of this material.…”

On decoration of biomolecular scaffolds with a conjugated polyelectrolyte

“…The DNA:CTMA complex is insoluble in aqueous media partly due to loss of net charge, as the negative charge of the phosphoric backbone is neutralized by the positive amine groups of the surfactant, partly due the creating of a shell of hydrophobic hydrocarbon tails of the surfactant surrounding the DNA. The complex is soluble in non-aqueous solvent such as ethanol where its stability is greatly enhanced 70 The solution processable DNA:CTMA complex have been used as a matrix for functional agents such as fluorescent dyes [71][72][73] and conducting materials 74 . Although the DNA chain condensates into particles during the complexation with CTMA and lose much of its stretchable form the inclusion of PEDOT-S into such a matrix is intriguing and the idea was investigated in PAPER VI.…”