Hợp chất hydrazide Schiff base chứa đơn vị triphenylphosphonium dùng để cảm biến huỳnh quang Al3+ và ứng dụng trong mẫu thực tế

Journal of Fluorescence - Trang 1-8 - 2023
Ozge Gungor1, Muhammet Köse1
1Science Faculty, Chemistry Department, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey

Tóm tắt

Sự dư thừa Al3+ trong cơ thể có thể gây ra nhiều bệnh. Do đó, việc phát triển các cảm biến hóa học để phát hiện Al3+ là rất cần thiết. Một hợp chất hydrazide Schiff base chứa các đơn vị triphenylphosphonium (ER) đã được tổng hợp và sử dụng làm cảm biến huỳnh quang để phát hiện Al3+. Việc phát hiện Al3+ giữa các kim loại khác nhau đã được thực hiện thành công thông qua sự hình thành các phức hợp phối trí Al3+-ligand. Để phát hiện Al3+, tính chất “bật sáng” của cảm biến huỳnh quang đã được nghiên cứu. Các nghiên cứu cảm biến huỳnh quang được thực hiện trong môi trường CH3OH-Nước (v/v, 9/1, pH 7.0) tại λem = 528 nm. Giới hạn phát hiện (LOD) cho việc cảm biến Al3+ được xác định là 0.129 µM. Bằng cách sử dụng đồ thị Job, tỉ lệ tỷ stoichiometric của ER- Al3+ được xác định là 1:1. Hằng số liên kết được xác định là 1.7 × 107 M−1 giữa Al3+ và cảm biến hóa học ER. Cuối cùng, việc xác định Al3+ trong trà thảo mộc thực tế đã được thực hiện bằng cách sử dụng chức năng cảm biến của cảm biến ER.

Từ khóa

#Al3+ #cảm biến huỳnh quang #hợp chất Schiff base #triphenylphosphonium #phức hợp phối trí

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