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April 17, 2026SensorsOpen Access

New Naphthalimide Derivative as a Colorimetric and Fluorescent Probe for Detection of pH, Strong Bases and Volatile Acids

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Authors

PMP M MiladinovaUniversity of Chemical Technology and Metallurgy

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Overview

This work develops a new fluorescent probe for acid-base detection, suggesting practical environmental applications.

Key Points

  • The aim is to synthesize a naphthalimide derivative to detect pH and volatile acids through fluorescence.
  • Synthesis of a 1,8-naphthalimide derivative with dual receptors.
  • Investigation of photophysical behavior in solution, on strip paper, and in thin film.
  • Assessment of reversible fluorescence switching under acid-base conditions.
  • Color change from yellow to blue was observed when transitioning from acidic to alkaline conditions.
  • Increased fluorescence intensity correlates with stronger acids.
  • Strip paper demonstrated effective cycling under acid-base vapor stimulation.

Cite This Study

P M Miladinova (2026) studied this question.

synapsesocial.com/papers/69e1cecc5cdc762e9d857cc4https://doi.org/10.3390/s26082411
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