5807-14-7Relevant articles and documents
Super alkali material and preparation method thereof, and organic light-emitting diode
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Paragraph 0056-0060, (2022/03/18)
The invention discloses a super alkali material and a preparation method thereof, and an organic light-emitting diode. The super alkali material has a general structural formula as described in the specification. In the general structural formula, aromatic rings Ar1, Ar2, Ar3 and Ar4 are respectively and independently selected from substituted or unsubstituted aryl or heteroaryl groups; N is a nitrogen atom; E is the same or different, and each E is an sp2-hybridized carbon or nitrogen atom; and Cy1, Cy2, Cy3 and Cy4 are respectively and independently selected from substituted or unsubstituted heterocyclic rings. The electron injection performance of a device can be effectively improved by introducing a functional group with an alkaline acid dissociation constant (pKa), and a planar rigid structure is adopted, so the material is closely stacked to show high electron mobility, the glass-transition temperature (Tg) of the material is increased, and the stability of the device is improved. On the premise that HOMO and LUMO energy levels are maintained, injection energy barriers are reduced, turn-on voltage is reduced, and when the material serves as an electron transport material of the organic light-emitting diode, the material has the advantages of being high in carrier mobility, excellent in device performance, good in stability and the like.
Synthesis method of 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene
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Paragraph 0019-0021; 0029-0031, (2021/08/11)
The invention discloses a synthesis method of 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene, which comprises the following steps: salifying 3,3'-diaminodipropylamine and a hydrobromic acid solution in tetrahydrofuran, and conducting heating and reacting with tetraethyl orthocarbonate and 3,3'-diaminodipropylamine by taking dimethyl sulfoxide as a solvent; after the reaction is finished, adding tetrahydrofuran for crystallization, and conducting suction filtration, suspension washing and drying to obtain an intermediate compound IV; then conducting reacting with sodium methoxide, conducting dissociating to obtain a crude compound V, purifying the compound V through toluene crystallization, and conducting reacting with dimethyl sulfate under the action of alkali to obtain a crude target compound VI; and carrying out reduced pressure distillation on the crude product, and collecting 80-85 DEG C/55Pa fractions to obtain colorless transparent liquid. According to the high-purity 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene prepared by the method disclosed by the invention, the GC (Gas Chromatography) purity can reach 99% or above, and the total yield is 79% or above.
METHOD FOR PREPARING A BICYCLIC GUANIDINE AND ITS DERIVATIVES
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Paragraph 0054, (2019/05/30)
The present invention relates to a method of producing a bicyclic guanidine and its derivatives. In particular, the present invention relates to a method of producing triazabicyclodecene (TBD) and its derivatives, particularly alkyl derivatives, such as methyl triazabicyclodecene (MTBD), and MTBD-derived ionic liquids. The invention also relates to the use of said compounds in cellulose dissolution and subsequent processing.