- 2, 4, 7-trisubstituted fluorene compound and electronic device thereof
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The invention provides a 2, 4, 7-trisubstituted fluorene compound and an electronic device thereof. According to the 2, 4, 7-trisubstituted fluorene compound disclosed by the invention, a fluorene rigid structure is introduced, so that the 2, 4, 7-trisubstituted fluorene compound is excellent in film-forming property and thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the 2, 4, 7-trisubstituted fluorene compound can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer, and can reduce driving voltage, improve efficiency and brightness, prolong theservice life and the like. The preparation method of the 2, 4, 7-trisubstituted fluorene compound is simple, raw materials are easy to obtain, and industrial development requirements can be met.
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- Fluorene derivative and electronic device
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The invention provides a fluorene derivative and an electronic device. By introducing a fluorene rigid structure into the fluorene derivative, the obtained fluorene derivative has an excellent film-forming property and high thermal stability, and can be used for preparing an organic light-emitting device, an organic field effect transistor and an organic solar cell. In addition, the fluorene derivative can be used as a constituent material of a hole injection layer, a hole transport layer, a light emitting layer, an electron blocking layer, a hole blocking layer or an electron transport layer,and can reduce the driving voltage, improve the efficiency and the brightness, prolong the service life and the like. In addition, the preparation method of the fluorene derivative is simple, raw materials are easily available, and the industrial development requirements can be met.
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- AN ORGANIC ELECTROLUMINESCENT COMPOUND AND AN ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
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The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device comprising the same. By using the organic electroluminescent compound according to the present invention, it is possible to produce an or
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- Competition in Intramolecular Arylation of Triphenylmethanols
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Six new unsymmetrically substituted derivatives of 2-aminotriphenylmethanol (1) have been synthesised.The direction of ring closure following diazotisation and loss of nitrogen is determined by the nature of the intermediates formed.Where aryl radical intermediates are formed, the selectivity parallels that found in intermolecular competition by phenyl radicals, whereas copper-catalysed decomposition of the diazonium ion leads to intermediates which seem, from their selectivity, to possess considerable cationic nature.The slower thermal decomposition of the diazonium ions unexpectedly shows very little selectivity, suggesting that electrostatic interactions predominate in determining a very short lifetime of the crucial intermediate.
- Bolton, Roger,Mguni, Raphael S.,Williams, Gareth H.
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p. 405 - 408
(2007/10/02)
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