Novel Schiff base decorated cyclotriphosphazene chemosensors for Fe and Cu ions detection

In this study, new 2-aminobenzothiazole derivative Schiff base decorated cyclotriphosphazene compounds (<bold>SBCTP 1</bold> and <bold>2</bold>), which are likely to have chemical sensor properties, were designed and synthesized successfully. The compounds were structurally characterized by mass analysis and NMR (H-1, C-13 and P-31) spectroscopies. Photophysical and chemosensory properties of <bold>SBCTP 1</bold> and <bold>2</bold> against some analytes were examined by UV-vis and Fluorescence spectrophotometry. While a significant increase was observed in the UV-vis absorption signals observed at 350 nm with the addition of Fe3+ and Fe2+ ions and a new absorption band was observed at 290 nm with the addition of Cu2+. In addition, according to Job's plot obtained from UV-vis absorption titrations, the complex stoichiometries of <bold>SBCTP 1</bold> and <bold>2</bold> with selective analytes were determined as 1:1 (L/M) and 1:2 (L/M), respectively. The selective interaction of donor atoms on <bold>SBCTP 1</bold> and <bold>2</bold> with Cu2+, Fe2+ and Fe3+ ions give these compounds chemosensory properties. This study showed that the synthesized Schiff base decorated cyclotriphosphazene compounds (<bold>SBCTP 1</bold> and <bold>2</bold>) could be new chemosensors with high selective and immediate sensitivity for the detection of iron and copper ions.

Dergi

JOURNAL OF MOLECULAR STRUCTURE

Yıl

2025

Cilt

1321

ISSN

0022-2860

eISSN

1872-8014

DOI

10.1016/j.molstruc.2024.140100

WoS UID

WOS:001322199400001