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Dutta, Ranjan,Firmansyah, Dikhi,Kim, Jihoon,Jo, Hongil,Ok, Kang Min,Lee, Chang-Hee The Royal Society of Chemistry 2018 Chemical communications Vol.54 No.57
<P><I>meso</I>-Ethynyl extended aryl-picket calix[4]pyrroles 2 and 3 are designed and synthesized by directly anchoring arylethynyl groups at diametrically opposed <I>meso</I>-positions. The critical roles of direct ethynyl linkers are manifested through the isolation of unexpected host-anion conformers of <I>meso</I>-arylethynyl calix[4]pyrroles and a significant enhancement in halide binding affinities.</P>
Ranjan Dutta,Dikhi Firmansyah,유재덕,Ravi Kumar,Endale Mulugeta Beza,조홍일,옥강민,이창희 대한화학회 2017 Bulletin of the Korean Chemical Society Vol.38 No.10
A series of carbazole–benzimidazole conjugates and corresponding BF2-complexes (BODIPYs) are synthesized and characterized. Carbazole–benzimidazole conjugates are synthesized by the condensation of 1-formyl carbazole and phenylene diamines in good yields. Various substituents are introduced into the benzimidazole moiety and subsequent reaction with BF3•Et2O afforded the BF2-complexes in moderate to good yield. The structural and photophysical properties of the synthesized fluorophores are investigated with various spectroscopic techniques such as UV/Vis and fluorescence spectroscopy, cyclic voltammetry and X-ray crystallography.