Arthur Lawrence Wallace

Radical cations of end-capped tetrathienoacenes and their π-dimerization controlled by the nature of α-substituents and counterion concentration

Radical cations of a soluble rigid tetrathienoacene are capable of forming stable π-dimer dications at ambient temperature when the short backbone becomes extended with conjugated thiophene-2-yl substituents in the α-positions. On the other hand, simple attachment of methyl groups on the α-carbon of the external thiophen-2-yl rings proved sufficient to inhibit the dimerization. Stable radical cations were also exclusively formed for tetrathienoacene derivatives end-capped with bulky TIPS and phenyl substituents.

Development of organic semiconducting technology to realize low driving voltages

Corning has developed three generations of polymeric organic semiconducting (OSC) materials, each with progressively improved electronic performance and processability. These materials possess excellent solubility, mobility and stability. Stanford University has developed a new polymer dielectric material based on a fluoroelastomer. Combined with Comings OSC polymers, this enables easy to fabricate transistors with high transconductance, low driving voltage and excellent device stability, even in water.