29261-33-4 Usage
Description
2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) is a dopant used in the fabrication of organic semiconductors. It is known for its strong electron-accepting ability and the extended π system, which allows it to tune the electronic properties of a wide range of semiconductors. F4-TCNQ has a deep LUMO level (-5.2 eV) that is energetically close to the HOMO level of many organic semiconductors, facilitating charge transfer and doping.
Uses
Used in Organic Semiconductors:
2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane is used as a p-type dopant for hole-only devices and field effect transistors with organic hole transport layers (HTL). Its application enhances the electronic properties of these devices by facilitating charge transfer from the HOMO level of the host to the LUMO of the dopant molecule.
Used in Thermoelectric Performance:
2,3,5,6-Tetrafluoro-7,7,8,8-tetracyanoquinodimethane is used in the preparation of a bilayer structure of F4-TCNQ and pentacene to study the improved thermoelectric performance of organic thin films.
Used in Solar Cells:
F4-TCNQ is used as the p-type dopant for graphenes and in polymer solar cells, such as PCDTBT:F4TCNQ, where controlling the doping concentration can significantly increase the power conversion efficiency (PCE) of the solar cells.
Used in Light-Emitting Diodes (LEDs):
In pin devices, F4-TCNQ doped 4,4',4''-tris(3-methylphenylphenylamino)triphenylamine (m-MTDATA) serves as the p-doped HTL, resulting in high luminance and efficiency at extremely low operating voltages. For example, a luminance of 1000 cd/m2 can be reached at a voltage of 2.9 V.
Chemical Properties:
F4-TCNQ is a yellow-greenish or orange-brown powder, which contributes to its effectiveness as a dopant in various applications.
Classification
Fluorinated compounds, p-type dopant, Strong electron acceptor, Hole-injection materials, Hole-transport layer material, OLEDs, Polymer Solar Cells, Perovskite Solar Cells, OFETs.
Check Digit Verification of cas no
The CAS Registry Mumber 29261-33-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,2,6 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 29261-33:
(7*2)+(6*9)+(5*2)+(4*6)+(3*1)+(2*3)+(1*3)=114
114 % 10 = 4
So 29261-33-4 is a valid CAS Registry Number.
29261-33-4Relevant articles and documents
Synthesis method of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane
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Paragraph 0097; 0109, (2017/06/08)
The invention discloses a synthesis method of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane and relates to the technical field of organic electroluminescent materials. On the basis of simplifying the synthesis method, wastewater generated by post-treatment is reduced, and the safety of a synthesis process is improved, so that the synthesis method is applicable to industrial production. The synthesis method comprises the following steps: firstly, carrying out a condensation reaction by taking 2,3,5,6-tetrafluoroterephthaloyl chloride andtrialkylsilyl cyanide as raw materials under an oxygen-free and dry environment to obtain an intermediate; and then, removing trialkylsiloxy in the intermediate to obtain F4-TCNQ. The synthesis method of the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane, disclosed by the invention, is used for synthesizing organic electroluminescent materials.
Nanostructured charge transfer complex of CuTCNQF4 for efficient photo-removal of hexavalent chromium
La, Duong Duc,Ramanathan, Rajesh,Rananaware, Anushri,Bansal, Vipul,Bhosale, Sheshanath V.
, p. 33931 - 33936 (2016/05/09)
The high toxicity of hexavalent chromium warrants the development of efficient catalysts that could reduce chromium into relatively non-toxic trivalent chromium species. Pristine charge transfer complexes of the MTCNQ family (M = Cu or Ag; TCNQ = 7,7,8,8-
