1484-10-2Relevant articles and documents
Solvent-Dependent Nanostructures Based on Active π-Aggregation Induced Emission Enhancement of New Carbazole Derivatives of Triphenylacrylonitrile
Maity, Santu,Aich, Krishnendu,Prodhan, Chandraday,Chaudhuri, Keya,Pramanik, Ajoy Kumar,Das, Siddhartha,Ganguly, Jhuma
, p. 4856 - 4863 (2019)
In the present study, the carbazole and 2,3,3-triphenylacrylonitrile (TPAN) nanostructures (2-CTPAN and 2,2′-CTPAN) have been designed and synthesized by Pd-catalyzed Sonogashira cross-coupling reaction. CTPAN exhibit aggregation-induced emission enhancem
Azatrioxa[8]circulenes: Planar anti-aromatic cyclooctatetraenes
Nielsen, Christian B.,Brock-Nannestad, Theis,Hammershoj, Peter,Reenberg, Theis K.,Schau-Magnussen, Magnus,Trpcevski, Denis,Hensel, Thomas,Salcedo, Roberto,Baryshnikov, Gleb V.,Minaev, Boris F.,Pittelkow, Michael
, p. 3898 - 3904 (2013)
We describe herein the first synthesis of a new class of anti-aromatic planar cyclooctatetraenes: the azatrioxa[8]circulenes. This was achieved by treating a suitably functionalised 3,6-dihydroxycarbazole with 1,4-benzoquinones or a 1,4-naphthoquinone. We fully characterised the azatrioxa[8]circulenes by using optical, electrochemical and computational techniques as well as by single-crystal X-ray crystallography. The results of a computational study (NICS) suggest that the central planar cyclooctatetraene is anti-aromatic when the molecules are in neutral or oxidised states (2+), and that the corresponding dianions are aromatic. We discuss the aromatic/anti-aromatic nature of the planar cyclooctatetraenes and compare them with the isoelectronic tetraoxa[8]circulenes. Planar cyclooctatetraenes: The first synthesis of a new class of anti-aromatic planar cyclooctatetraenes is described: the azatrioxa[8]circulenes (see scheme). The azatrioxa[8]circulenes were fully characterised by using optical, electrochemical and computational techniques as well as by single-crystal X-ray crystallography. The aromatic/anti-aromatic nature of the planar cyclooctatetraenes is discussed and compared with the isoelectronic tetraoxa[8]circulenes. Copyright
A new aggregation-induced emission active red-emitting fluorescent sensor for ultrarapidly, selectively and sensitively detecting hydrazine and its multiple applications
Chen, Jianbin,Li, Tianduo,Niu, Qingfen,Qin, Xuyang,Wei, Tao,Yin, Pengcheng
, (2020)
In this work, a novel carbazole-indandione based red-emitting fluorescent sensor CBI was developed, which exhibited typical and interesting aggregation-induced emission (AIE) characteristics with a large Stokes shift in mixed aqueous media. CBI as a colorimetric and fluorimetric sensor for sensing hydrazine in ~100percent aqueous media shows ultrarapid response, excellent selectivity, and great sensitivity with a low detection limit of 1.18 ppb. The mechanism of CBI for highly sensing hydrazine was proved by fluorescence, FTIR, 1H NMR and HRMS spectra. Interestingly, the CBI was not only applied to sensitively detect aqueous N2H4 in water, human urine and live cells, but also was conveniently utilized to visualize gaseous N2H4 with sensitive naked-eye color diversification. Additionally, owing to its intense fluorescence irradiated by UV light, the CBI was significantly used as a new fluorescent ink for writing and drawing as well as a writable fluorescent display material.
Method for synthesizing carbazole derivative
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Paragraph 0013; 0068-0069, (2021/10/05)
The invention aims to provide a method for synthesizing a carbazole derivative. The method is characterized in that palladium chloride is used as a catalyst, 2, 2' - dibromobiphenyl is used as an electrophilic reagent, primary amine is taken as a nucleophile, and the carbazole derivative is directly cross-coupled under the conditions of toluene as a solvent and an air atmosphere. The method has the advantages of high yield, high selectivity, simplicity and convenience in operation and the like.
Design and synthesis of aryl-functionalized carbazole-based porous coordination cages
Rowland, Casey A.,Lorzing, Gregory R.,Bhattacharjee, Rameswar,Caratzoulas, Stavros,Yap, Glenn P. A.,Bloch, Eric D.
supporting information, p. 9352 - 9355 (2020/10/02)
A subset of coordination cages have garnered considerable recent attention for their potential permanent porosity in the solid state. Herein, we report a series of functionalized carbazole-based cages of the structure type M12(R-cdc)12 (M = Cr, Cu, Mo) where the functional groups include a range of aromatic substituents. Single-crystal X-ray structure determinations reveal a variety of intercage interactions in these materials, largely governed by pi-pi stacking. Density functional theory for a subset of these cages was used to confirm that the nature of the increased stability of aryl-functionalized cages is a result of inter-cage ligand interactions. This journal is