"I saw the killers," he said, referring to the employees of the United States Department of Agriculture, who gassed the geese in a mobile carbon-dioxide unit, as the "goose Gestapo".
Introduction of S,S-dioxide unit in the median position of the chain has a stronger effect on the lowering of the LUMO level while insertion of EDOT units at the lateral positions limits the decrease of the HOMO level.
A series of molecular organic semiconductors constituting of two side groups R, R = silole or silole-benzene, attached symmetrically to a central dibenzothiophene-S,S-dioxide unit were theoretically designed as host materials in red phosphorescence.
We report on the synthesis and characterization (including structural, optical, electrochemical and electroluminescence properties) of three alternating F-alt-X copolymers, where F is 9,9-bis(2′-ethylhexyl)fluorene unit and the X comonomer varies from a phenylene, to a thiophene and to a thiophene-S,S-dioxide unit.
In contrast, substituted S,S-dioxide units located within the backbone produce a torsion of the conjugated chain.
A series of π-conjugated oligomers based on various combinations of thiophene, 3,4-ethylenedioxythiophene (EDOT) and thiophene-S,S-dioxide units have been synthesized.
The insertion of EDOT units inside the conjugated chain with the S,S-dioxide units located at the lateral positions leads to a planar conjugated system presenting moderate band gap.
Theoretical calculations, optical and electrochemical data show that the relative positions of EDOT and S,S-dioxide units in the conjugated system exert strong influence on its electronic properties.
It produces 30% less carbon dioxide per unit of heat than petrol does, and 45% less than coal.
Over all, Prairie State will need 15 percent less fuel, and emit 15 percent less carbon dioxide, per unit of energy sold.
