ChemicalBook > CAS DataBase List > 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane

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

Classification Applications

CAS No.29261-33-4
Chemical Name:2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane
CBNumber:CB5464946
Molecular Formula:C12F4N4
Formula Weight:276.15
MOL File:29261-33-4.mol

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

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
InChI InChI=1S/C12F4N4/c13-9-7(5(1-17)2-18)10(14)12(16)8(11(9)15)6(3-19)4-20
InChIKey IXHWGNYCZPISET-UHFFFAOYSA-N
SMILES C1(=C(C#N)C#N)C(F)=C(F)C(=C(C#N)C#N)C(F)=C1F |c:10,t:0|
CAS DataBase Reference 29261-33-4(CAS DataBase Reference)
UNSPSC Code 12352103
NACRES NA.23

Safety

Hazard Codes :Xn,T
Risk Statements :36/37/38-20/21/22-23/24/25
Safety Statements :22-24/25-36/37/39-26-36/37
RIDADR :2811
WGK Germany :3
Hazard Note :Toxic
HazardClass :6.1(b)
PackingGroup :III
HS Code :29269090

NFPA 704:

	0
1		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordDanger
Hazard statements H301+H311+H331
Precautionary statements P280-P301+P310+P330-P302+P352+P312-P304+P340+P311

2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane Price More Price(4)

Brand: Sigma-Aldrich(India)
Product number: 376779
Product name : 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane
Purity: 97%
Packaging: 25MG
Price: ₹11734.3
Updated: 2022/06/14
Buy: Buy

Brand: Sigma-Aldrich(India)
Product number: 376779
Product name : 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane
Purity: 97%
Packaging: 100MG
Price: ₹31100.23
Updated: 2022/06/14
Buy: Buy

Brand: TCI Chemicals (India)
Product number: T1131
Product name : Tetrafluorotetracyanoquinodimethane (purified by sublimation) [Organic Electronic Material]
Purity:
Packaging: 100MG
Price: ₹13000
Updated: 2022/05/26
Buy: Buy

Brand: TCI Chemicals (India)
Product number: T1131
Product name : Tetrafluorotetracyanoquinodimethane (purified by sublimation) [Organic Electronic Material]
Purity:
Packaging: 1G
Price: ₹35600
Updated: 2022/05/26
Buy: Buy

2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane Chemical Properties,Usage,Production

Classification Fluorinated compounds, p-type dopant, Strong electron acceptor, Hole-injection materials, Hole-transport layer material, OLEDs, Polymer Solar Cells, Perovskite Solar Cells, OFETs.
Applications 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.
It has been reported that by controlling the doping concentration, the PCE of the PCDTBT:F4TCNQ solar cells increased from 6.41% to 7.94%, mainly due to improving the photocurrent with a F4TCNQ weight ratio of the blend lower than 0.5% [2]. F4TCNQ is also used as the p-type dopant for graphenes.
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
Uses 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.