Chan, Wei Chuen and Saad, Hazwani Mat and Sim, Kae Shin and Lee, Vannajan Sanghiran and Ang, Chee Wei and Yeong, Keng Yoon and Tan, Kong Wai (2021) A rhodamine based chemosensor for solvent dependent chromogenic sensing of cobalt (II) and copper (II) ions with good selectivity and sensitivity: Synthesis, filter paper test strip, DFT calculations and cytotoxicity. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 262. ISSN 1386-1425, DOI https://doi.org/10.1016/j.saa.2021.120099.
Full text not available from this repository.Abstract
A new chemosensor 1 was synthesized by reacting rhodamine B hydrazide and 2,3,4-trihydroxybenzaldehyde, which was then characterized by spectroscopic techniques and single crystal X-ray crystallography. Sensor 1 has the ability to sense Co2+/Cu2+ ions by ``naked-eye'' with an apparent colour change from colourless to pink in different solvent system, MeCN and DMF respectively. Furthermore, it can selectively detect Co2+/Cu2+ among wide range of different metal ions, and it exhibits low detection limit of 4.425 x 10(-8) M and 1.398 x 10(-7) M respectively. Binding mode of the two complexes were determined to be 1:1 stoichiometry for Co2+ complex and 1:2 stoichiometry for Cu2+ complex through Job's plot, IR spectroscopy, mass spectrometry and H-1 NMR spectroscopy. Moreover, reversibility of the sensor 1 as copper (II) ion detector was determined by using EDTA and the results showed that sensor 1 can be reused for at least 6 cycles. Other than that, a low cost chemosensor test strips were fabricated for the convenient ``naked-eye'' detection of Co2+ and Cu2+ in pure aqueous media. The MTT assay was conducted in order to determine the cytotoxicity of sensor 1 towards human cell lines. (C) 2021 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Funders: | MOHE, Malaysia [FGRS/1/2019/STG01/UM/02/11] |
| Uncontrolled Keywords: | Chemosensor; Rhodamine; ``Naked-eye'' detection; Solvent dependent sensing; Co2+; Cu2+ |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 16 Aug 2022 10:34 |
| Last Modified: | 16 Aug 2022 10:34 |
| URI: | http://eprints.um.edu.my/id/eprint/28560 |
Actions (login required)
 |
View Item |
