Synthesis of Green/Blue Light Emitting Quinolines by Aza-D-A Reaction Using InCl3 Catalyst

An efficient InCl 3 -catalyzed sequential reaction of aromatic amines, aromatic aldehydes and functionalized alkynes leading to the formation of new quinoline derivatives exhibiting significant fluorescence activities is described. The photophysical investigations of quinolines were carried out by a...

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Bibliographic Details
Published in:Journal of fluorescence 2021-01, Vol.31 (1), p.247-257
Main Authors: Singh, Rajkumar Romeshkumar, Singh, Thokchom Prasanta, Singh, Ningthoujam Premananda, Naorem, Shanta Singh, Singh, Okram Mukherjee
Format: Article
Language:English
Subjects:
Aldehydes
Alkynes
Amines
Analytical Chemistry
Aromatic compounds
Biochemistry
Biological and Medical Physics
Biomedical and Life Sciences
Biomedicine
Biophysics
Biotechnology
Fluorescence
Organic compounds
Original
Original Article
Photoluminescence
Quinoline
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Summary:An efficient InCl 3 -catalyzed sequential reaction of aromatic amines, aromatic aldehydes and functionalized alkynes leading to the formation of new quinoline derivatives exhibiting significant fluorescence activities is described. The photophysical investigations of quinolines were carried out by absorption and photoluminescence measurements. One particular compound 4  h having maximum intensity, emitting green colour (Φ = 0.78) with average life time of 6.20 ns was the best amongst the tested compounds . The presence of the amino group at the 4-aryl substituent of the quinoline backbone played an important role in executing the Povarov cyclization successfully and enhancing the flourescence properties of the newly synthesized quinolines.
ISSN:1053-0509
1573-4994
1573-4994
DOI:10.1007/s10895-020-02647-3