601454-29-9Relevant articles and documents
Dendritic molecular organic fluorescent material, application thereof, fluorescent film and preparation method of fluorescent film
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, (2019/08/12)
The invention provides a dendritic molecular organic fluorescent material, application thereof, a fluorescent film and a preparation method and application of the fluorescent film, and belongs to thefield of fluorescence sensing. The dendritic molecular organic fluorescent material provided by the invention has a structure shown as a formula I, wherein a unit A is used as a central core of a dendritic molecule; a unit B is a branched unit of the dendritic molecule; and a unit C is a peripheral active group of the dendritic molecule and has electrochemical activity. The dendritic molecular organic fluorescent material provided by the invention is accurate in molecular structure and good in repeatability, and has fluorescent response and colorimetric response to iodide ions, mercury ions and ferric ions at the same time; and according to the dendritic molecular organic fluorescent material and the fluorescent film prepared from the dendritic molecular organic fluorescent material provided by the invention, fluorescence/colorimetric dual-channel detection of iodide ions, mercury ions and ferric ions can be realized, the detection precision is high, and errors are small.
Crystal structure for 3,6-diiodo-N-(4-bromophenyl)carbazole and application thereof
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Paragraph 0015; 0016, (2017/07/23)
The invention discloses a crystal structure for 3,6-diiodo-N-(4-bromophenyl)carbazole and an application thereof, belonging to the field of photoelectric materials. The preparation method for the crystal with the crystal structure comprises the following steps: weighing 0.1 gram of the 3,6-diiodo-N-(4-bromophenyl)carbazole, dissolving the 3,6-diiodo-N-(4-bromophenyl)carbazole in 5 ml of chloroform, carrying out filtering, and carrying out standing for 3 days so as to obtain a bulk pink crystal, wherein the crystal structure of the bulk pink crystal belongs to a monoclinic system and a space group of P2/c, and has cell parameters as described in the specification. The compound provided by the invention is an intermediate of an excellent photoelectric material.
Starburst dendrimers consisting of triphenylamine core and 9-phenylcarbazole-based dendrons: Synthesis and properties
You, Jia,Li, Guiyang,Wang, Zhonggang
, p. 9481 - 9490 (2013/01/15)
Novel dendrimers consisting of a triphenylamine core and 1st to 3rd generations of 9-phenylcarbazole-based dendrons were synthesized by Suzuki coupling reaction through convergent approach. Their structures were confirmed by two-dimensional correlated H-H COSY and C-H HSQC NMR spectra, MALDI-TOF MS and elemental analysis. The dendrimers exhibit excellent thermal stability with 5% weight loss temperatures over 540 °C. The computer modeling reveals that the dendrons in dendrimers greatly twisted with the generation, leading to the dendrimers decreased crystalline ability. Of interest is the observation that, for an identical dendrimer, the solid film displays the similar UV absorption and luminescence emission profiles to the solution sample, indicating that, after evaporation of solvent, the rigid dendrimer can well maintain its conformational morphology and the aggregation or stacking of the chromophoric groups is significantly inhibited. All the dendrimers can emit intense fluorescence with narrow full width at half maximum (FWHM) around 46-50 nm. Moreover, with the incremental generation, the quantum efficiencies remarkably increase from 64 to 95%, suggesting that the highly contorted and bulky dendrons effectively decrease energy wastage and non-radiative decay. The synergistic effect of electron-donating triphenylamine core and 9-phenylcarbazole-based dendrons results in the HOMO energy level of -5.36 eV for the 3rd-generation dendrimer, very close to the work function of the ITO/PEDOT electrode (-5.2 eV), which characteristic is very advantageous for the hole injection and transport materials.
