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HomeProduct name list2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

Synonym(s):(2,3,5,6-Tetrafluoro-2,5-cyclohexadiene-1,4-diylidene)dimalononitrile;7,7,8,8-Tetracyano-2,3,5,6-tetrafluoroquinodimethane;F4TCNQ

2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane Structural

What is 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane?

Description

F4TCNQ is?one of the most widely used and most effective p-type dopants due to its strong electron-accepting ability and the extended?π?system. It has a deep LUMO level (-5.2 eV) which is energetically in the vicinity of the?HOMO level of many organic semiconductors. Doping is facilitated by charge transfer from the HOMO level of the host to the LUMO of the dopant molecule.?Pin devices with F4TCNQ doped 4,4',4''-tris(3-methylphenylphenylamino)triphenylamine (m-MTDATA) serving as the p-doped HTL show high luminance and efficiency at extremely low operating voltages: For instance, a luminance of 1000 cd/m2 is?reached at a voltage of 2.9 V .

Chemical properties

Yellow-greenish or orange-brown powder

The Uses of 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

F4-TCNQ is the p-type dopant for hole-only devices and field effect transistors with organic hole transport layers (HTL). It is used in the preparation of a bilayer structure of F4-TCNQ and pentacene to study improved thermoelectric performance of organic thin films.

General Description

2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) is a dopant used in the fabrication of organic semiconductors. It can tune the electronic properties as its lowest unoccupied molecular orbital is at a desirable energy level required to oxidize a wide range of semiconductors.

Properties of 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

Melting point: 285-290 °C(lit.)
Boiling point: -89.6±40.0 °C(Predicted)
Density  1.7075 (estimate)
storage temp.  Sealed in dry,Room Temperature
form  powder to crystal
color  Light yellow to Amber to Dark green
Water Solubility  insoluble
BRN  2157887
CAS DataBase Reference 29261-33-4(CAS DataBase Reference)

Safety information for 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

Signal word Danger
Pictogram(s)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

InChIKey IXHWGNYCZPISET-UHFFFAOYSA-N

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