Related Experiment Video
Updated: Mar 31, 2026

Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
Synthesis and photophysics of selective functionalized π-conjugated, blue light emitting, highly fluorescent
Rajib Sarkar1, Tandrima Chaudhuri, Animesh Karmakar
1Department of Chemistry, University of Calcutta, 92 APC Road, Kolkata-700009, India. cmukhop@yahoo.co.in.
Abstract:
A new family of novel highly fluorescent π-conjugated, C7-imidazole based indolizine derivatives has been prepared in good to excellent yields, catalysed by l-proline in acetonitrile. These are π-conjugated, C7-imidazole based indolizine derivatives covering the emission wavelength range 423-449 nm in acetonitrile with high quantum yields at 25 °C. A thorough photophysical study of all the compounds has been carried out to understand the π-conjugated electronic effect of the imidazole moiety fused at the C7 position on the indolizine motif. In addition, a comparative photophysical study of three selective fluorophores was also carried out in a wide variety of solvents at 25 °C. Finally, the molecular orbitals of the two representative compounds were investigated through DFT calculations to illustrate the pi-conjugate effect.
More Related Videos
07:44Synthesis of Wavelength-shifting DNA Hybridization Probes by Using Photostable Cyanine Dyes
Published on: July 6, 2016
06:34Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS
Published on: June 20, 2014
Related Concept Videos
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
UV–Vis Spectroscopy of Conjugated Systems
One of the factors influencing λmax is the extent of conjugation in...
Variables Affecting Phosphorescence and Fluorescence
Cycloaddition Reactions: MO Requirements for Photochemical Activation
Photoluminescence: Applications