40114-84-9Relevant articles and documents
Green-synthesized, low-cost tetracyanodiazafluorene (TCAF) as electron injection material for organic light-emitting diodes
Yang, Bing,Zhao, Jianfeng,Wang, Zepeng,Yang, Zhenlin,Lin, Zongqiong,Zhang, Yanni,Li, Jiewei,Xie, Linghai,An, Zhongfu,Zhang, Hongmei,Weng, Jiena,Huang, Wei
, p. 1969 - 1973 (2019)
Two electron-deficient azaacenes including di- and tetra-cyanodiazafluorene (DCAF and TCAF) with the advantages of deep lowest unoccupied molecular orbital (LUMO), green-synthesis, low-cost, simply purification method, excellent yields have been obtained, characterized and used as electron injection materials (EIMs) in three groups of electroluminescence devices. Device B with TCAF as EIM exhibited the best performance including turn-on voltage of 5.0 V, stronger maximum luminance intensity of 31,549 cd/m2, higher luminance efficiency of 62.34 cd/A and larger power efficiency of 21.74 lm/W which are 0.53, 6.7, 9.3 and 15.3 times than that of device A with DCAF as EIMs, respectively. The enhanced interfacial electron injection ability of TCAF than that of DCAF is supported by its better electron mobility in electron-only device, deeper LUMO (-4.52 eV), and stronger electronic affinity. Best external quantum efficiency of 16.56% was achieved with optimized thicknesses of TCAF as EIM and TPBi as electron transporting layer. As a new comer of acceptor family, TCAF would push forward organic electronics with more fascinating and significant applications.
FLUORENONE/FLUORENOL DERIVATIVES FOR AQUEOUS REDOX FLOW BATTERIES
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Paragraph 0157, (2021/05/21)
Aqueous electrolytes comprising fluorenone/fluorenol derivatives are disclosed. The electrolyte may be an anolyte for an aqueous redox flow battery. In some embodiments, the compound, or salt thereof, has a structure according to any one of formulas I-III where Q1-Q4 independently are CH, C(R1) or N, wherein 0, 1, or 2 of Q1-Q4 are N; Q5-Q8 independently are CH, C(R2), or N, wherein 0, 1, or 2 of Q5-Q8 are N; Y is C═O or C(H)OH; R1 and R2 independently are an electron withdrawing group; n is an integer >1; and x and y independently are 0, 1, 2, 3, or 4, where at least one of x and y is not 0.
Material for an organic electroluminescence device and an organic electroluminescence device
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Page/Page column 57, (2012/03/10)
A material for an organic electroluminescence device represented by the following formula (I): wherein X1 is one of divalent groups represented by the following (a) to (e); Y1 to Y4 are independently a carbon atom or a nit