Both Benzannulation and Heteroatom-Controlled Photophysical Properties in Donor-π-Acceptor Ionic Dyes: A Combined Experimental and Theoretical Study.

ABSTRACT: Donor-π-acceptor (D-π-A) dyes have garnered significant attention due to their unique optical properties and potential applications in various fields, including optoelectronics, chemical sensing and bioimaging. This study presents the design, synthesis, and comprehensive photophysical investigation of a series of ionic dyes incorporating five- and six-membered heterocyclic rings as electron-donating and electron-withdrawing units, respectively. The influence of the dye structure, i.e., (a) the systematically varied heteroatom (NMe, S and O) in donor moiety, (b) benzannulation of the acceptor part and (c) position of the donor vs. acceptor, on the photophysical properties was evaluated by steady-state and time-resolved spectroscopy across solvents of varying polarity. To probe solvatochromi

SUBMITTER: Krawczyk P 

PROVIDER: S-EPMC12565802 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature