Articles written in Journal of Chemical Sciences
Volume 128 Issue 11 November 2016 pp 1709-1715 Regular Article
The oxasmaragdyrins containing one five membered heterocycle such as pyrrole, thiophene and furan in place of one of the meso-phenyl group were synthesized by acid-catalyzed oxidative coupling reaction of meso-heterocycle substituted dipyrromethane with 16-oxatripyrrane in the presence of catalytic amountof trifluoroacetic acid followed by oxidation with DDQ. The smaragdyrin macrocycles containing one fivemembered heterocycle at meso-position were characterized by HR-MS and detailed 1D and 2D NMR studies. The absorption and fluorescence studies revealed that the presence of five membered heterocycle at mesoposition of smaragdyrin resulted in bathochromic shifts in absorption and emission bands with slight reduction in quantum yields compared to smraragdyrin macrocycle containing six membered meso-phenyl groups. Theelectrochemical studies revealed that the meso-heterocycle smaragdyrins are electron deficient compared to meso-phenyl smaragdyrins.
Volume 133 All articles Published: 18 June 2021 Article ID 0059
3-Pyrrolyl BODIPY-Schiff base conjugate was synthesized by treating α-formyl 3-pyrrolylBODIPY with
SYNOPSIS: 3-Pyrrolyl BODIPY-Schiff base conjugate was synthesized starting from α-formyl 3-pyrrolyl BODIPY. The conjugate was thoroughly characterized by HR-MS, NMR and X-ray crystallography. The absorption and fluorescence titration studies with various metal ions revealed that 3-pyrrolyl BODIPY can act as specific “off-on” fluorescent sensor for Cu2+ion.
Volume 133, 2021
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