- Novel amine compound and high-efficiency organic light-emitting diode including same
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Disclosed herein are a novel amine compound and an organic light-emitting diode of high efficiency including the same and, more particularly, to an amine compound with a specific structure which exhibits high efficiency as a material for a hole transport layer in an organic light-emitting diode, and an organic light-emitting diode including same. Here, Chemical Formulas A and B are as described in the specification.
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Paragraph 0128-0129; 0152-0153
(2021/09/17)
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- Preparation method of 9,9-dimethylfluorene-2-methoxy-3-boric acid
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The invention discloses a preparation method of 9,9-dimethylfluorene-2-methoxy-3-boric acid, which comprises the following steps: S1, synthesis of an intermediate; S2, synthesis of a target product: with n-butyllithium for removing hydrogen extraction and then connecting the intermediate with borate, and performing hydrolysis to prepare the 9,9-dimethylfluorene-2-methoxy-3-boric acid. The method improves the production operation environment, is easy to operate and control, improves the yield, shortens the reaction time, reduces the cost, and is beneficial to industrial production. The purity of the synthesized 9,9-dimethylfluorene-2-methoxy-3-boric acid is high, so that the preparation of a subsequent product and the performance of the prepared subsequent product can be ensured.
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Paragraph 0049; 0051-0057; 0075; 0077-0083; 0101; 0103-0109
(2019/10/01)
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- NOVEL ORGANIC COMPOUND AND ORANIC LIGHT-EMITTING DIODE COMPRISING SAME BACKGROUND OF THE INVENTION
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Disclosed are an organic compound represented by any one of Chemical Formulas A to E and an organic light-emitting diode including the same. Chemical Formulas A to E are as described in the specification.
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Paragraph 0137; 0138
(2018/04/19)
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- Gold-catalyzed oxidative coupling of arylsilanes and arenes: Origin of selectivity and improved precatalyst
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The mechanism of gold-catalyzed coupling of arenes with aryltrimethylsilanes has been investigated, employing an improved precatalyst (thtAuBr3) to facilitate kinetic analysis. In combination with linear free-energy relationships, kinetic isotope effects, and stoichiometric experiments, the data support a mechanism involving an Au(I)/Au(III) redox cycle in which sequential electrophilic aromatic substitution of the arylsilane and the arene by Au(III) precedes product-forming reductive elimination and subsequent cycle-closing reoxidation of the metal. Despite the fundamental mechanistic similarities between the two auration events, high selectivity is observed for heterocoupling (C-Si then C-H auration) over homocoupling of either the arylsilane or the arene (C-Si then C-Si, or C-H then C-H auration); this chemoselectivity originates from differences in the product-determining elementary steps of each electrophilic substitution. The turnover-limiting step of the reaction involves associative substitution en route to an arene π-complex. The ramifications of this insight for implementation of the methodology are discussed.
- Ball, Liam T.,Lloyd-Jones, Guy C.,Russell, Christopher A.
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p. 254 - 264
(2014/01/23)
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