Issue 31, 2025
From the journal:

RSC Advances

An NMR insight into the solvatochromic behaviour of Brooker's merocyanine dyes†

Michal Afri,a   Hugo E. Gottlieb,a   Natalia Fridmanb  and  Abed Saady ORCID logo *a  

* Corresponding authors

a Department of Chemistry, Bar-Ilan University, Ramat-Gan, Israel
E-mail: abed.saady@biu.ac.il

b Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa City 3200003, Israel

Abstract

Systematic NMR/UV-Vis analysis of Brooker's merocyanine dyes reveals solvent polarity governs electronic structure and spectroscopy. Absorption maxima 13C and 15N NMR shifts correlate with ET(30), probing zwitterionic/vinylogous amide. Substituent and solvent effects modulate these interactions, directly linking colour changes to electronic structure for rational design of environment-sensitive probes.

Graphical abstract: An NMR insight into the solvatochromic behaviour of Brooker's merocyanine dyes

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Article information

DOI
https://doi.org/10.1039/D5RA03758A
Article type
Paper
Submitted
28 May 2025
Accepted
09 Jul 2025
First published
17 Jul 2025
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2025,15, 25436-25440

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An NMR insight into the solvatochromic behaviour of Brooker's merocyanine dyes

M. Afri, H. E. Gottlieb, N. Fridman and A. Saady, RSC Adv., 2025, 15, 25436 DOI: 10.1039/D5RA03758A

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