A novel pyrazole bearing imidazole frame as ratiometric fluorescent chemosensor for Al3+/Fe3+ ions and its application in HeLa cell imaging

被引：54

作者：

Ganesan, Jeya Shree ^{[1
]}

Sepperumal, Murugesan ^{[1
]}

Ashokkumar, Balasubramaniem ^{[2
]}

Ayyanar, Siva ^{[1
]}

机构：

[1] Madurai Kamaraj Univ, Sch Chem, Dept Inorgan Chem, Supramol & Organometall Chem Lab, Madurai 625021, Tamil Nadu, India

[2] Madurai Kamaraj Univ, Sch Biotechnol, Madurai 625021, Tamil Nadu, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2020年 / 230卷

关键词：

Imidazole; Ratiometric; TD-DFT; Al3+-and Fe3+-Fion sensor; HeLa cell; IRON REGULATORY PROTEINS; TURN-ON CHEMOSENSOR; SELECTIVE RECOGNITION; OXIDATIVE STRESS; ALUMINUM ION; LIVING CELLS; SENSOR; AL(III); HOMEOSTASIS; MECHANISMS;

D O I：

10.1016/j.saa.2019.117993

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

New pyrazole bearing imidazole derivative was successfully synthesized and thoroughly characterized by various spectroanalytical techniques. The sensor DIBI shows a highly selective and sensitive fluorescent response with the addition of Al3+/Fe3+ ions in acetonitrile-water mixture. The strong fluorescent molecule exhibits a notable ratiometric emissions at 462 nm and 470 nm for Al3+ and Fe3+ ions, respectively (lambda(ex) = 280 nm). job's plot studies conclude that the coordination between DIBI with Al3+/Fe3+ was 1:1 binding stoichiometry. The limit of detection of DIBI with Al3+/Fe3+ was calculated as 2.12 x 10(-7) M and 1.73 x 10(-6) M, respectively. The TD-DFT calculations further supported the photonics performances of the free probe and its complexes. The reversibility and reusability of the sensor molecule are studied using EDTA. The probe was used to track Al3+/Fe3+ in cancer cells via fluorescence microscopy. (C) 2019 Elsevier B.V. All rights reserved.

引用

页数：10

共 69 条

[31] A ratiometric fluorescent sensor for selective recognition of Al3+ ions based on a simple benzimidazole platform [J].