New Highly Conductive Polymer



A new study from an international research team was published in the journal nature. The team has created a multi layered two dimensional polyaniline (2DPANI) crystal. The material has a unique metallic out of plane charge transport and is highly conductive.

There are many different types of conducting polymers, such as polyaniline, polythiophene and polypyrrole. These polymers are best known for their electrical conductivity. They are low cost, flexible and lightweight, making them a possible alternative to traditional metals and semiconductors.

Charge transport between polymer chains has been a huge challenge that scientists are addressing. Researchers from the round the world are collaborating, including Ningbo Institute of material technology and engineering (NIMTE) Of the Chinese academy of sciences ( CCAS), TU Dresden, The max Planck  Institute of microstructure physics and CIC nanoGUNE BRTA. They have developed a new 2DPANI crystal.

They used a topology directed 2D depolymerization of aniline using an anionic surfactant monolayer on water’s surface.

The 2DPANI crystal is 130–160 square micrometers in size. It has a thickness that ranges from tens to hundreds of nanometers thick.

The structure of the crystals creates strong in place conjugation and interlayer electron coupling. The team confirmed this by using spin resonance spectroscopy and theoretical calculation.

The new conductive polymer displayed a Drude-type conductivity. It had a direct current conductivity of 200 S/cm. The team also observed an anisotropic charge transport, it had out of plane and in plain conductivities that measured 75/cm and 165/cm respectively.

The scientists discovered that vertical devices demonstrated increased conductivity at lower temperatures. 

This study shows advancements into three-dimensional metallic conductivity, opening new ways for the creation of next generation electrodes and electronics.


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