Dual-Chromophore Fluorescent Probe: Multi-Stimuli Sensing and Visual Discrimination

Abstract

The advancement of multifunctional fluorescent probes for monitoring diverse environmental parameters is of paramount importance. In this study, we engineered dual-chromophore fluorescent probe, DBT, that responds to multiple stimuli by integrating functional groups with unique characteristics. Notably, the probe DBT exhibits pronounced bimodal emission under specific conditions, with its fluorescence shifting between red and blue in response to alterations in solvent composition, humidity levels, and temperature variations. Significantly, DBT facilitates the differentiation and visual identification of eight solvents, and permits the quantitative detection of trace water content in organic solvents. Additionally, it allows for the visual detection of gasoline. These findings herald the development of single-molecule fluorescent materials capable of responding to multiple stimulus, paving the way for simultaneous multi-stimuli detection and discrimination in various applications.

Keywords

Dual-chromophore / Multi-stimuli-responsive luminescence / Fluorescent probes / Solvatochromism / Visualization detection

RIGHTS & PERMISSIONS

2025 SIOC, CAS, Shanghai, & WILEY-VCH GmbH