1,4-Dihydropyrrolo[3,2-b]Pyrroles Containing New A-D-A System: Synthesis and Investigation of Their Photophysical Properties

Journal of Fluorescence, Journal Year: 2025, Volume and Issue: unknown

Published: March 21, 2025

Abstract Herein, new tetraarylpyrrolo[3,2-b]pyrroles (TAPP) containing different substituents ( 4a-c , 5a-c ) on the N -phenyl rings were synthesized in high yields using a one-pot method. The 3,6 positions of pyrrolopyrol ring compound formylated by Vilsmeier-Haack reaction to synthesize acceptor-donor-acceptor (A-D-A) system ). photophysical properties all obtained derivatives investigated solvents. According results obtained, absorptions recorded around 400 nm and their emission intensities appeared 450 nm. absorption 4b 5b as 350 nm, respectively, while observed 455 440. In A-D-A formed result bonding electron-withdrawing formyl groups at position TAPP structure, Stokes shift occurred, 50 hypsochromic shifts its absorption.

Language: Английский

Diversifying peripheral aromatic units of pyrrolo[3,2-b]pyrrole-containing conjugated polymers and the resulting optoelectronic properties

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Pyrrolo[3,2- b ]pyrrole represents a synthetically-simple conjugated scaffold that enables accessing polymers with tailorable properties useful for organic electronics.

Language: Английский