Work

Dual-channel fluorescent sensor for rapid Cu2+ and Fe3+ detection: Enhanced sensitivity and selectivity with triazole-substituted acridinedione derivative

Year: 2024

Type: article

Abstract: The AR-2 sensor, derived from a triazole-substituted acridinedione, exhibits distinct responses to Cu 2 ⁺ and Fe³⁺ ions. It shows fluorescence enhancement in the presence of Cu 2 ⁺ ions and a reduction in fluorescence with Fe³⁺ ions. This sensor is distinguished by its high sensitivity, selectivity, rapid response time, reversibility, and broad operating pH range, with shallow detection limits for both ions. Structural and photophysical analyses of AR-2 were conducted using density functional theory (DFT) and various spectroscopic techniques. The binding modes and recognition mechanisms for Cu 2 ⁺ and Fe³⁺ ions were elucidated through multiple experimental approaches. Additionally, AR-2 demonstrated efficacy in the rapid, visual detection of these ions via paper test strips and swab tests. It successfully identified Cu 2 ⁺ and Fe³⁺ ions in real water and food samples, achieving notable recovery rates. The AR-2 sensor also excelled in fluorescence imaging, effectively visualizing iron and copper pools in seed sprouts.

Source: Heliyon

DOI: 10.1016/j.heliyon.2024.e38318

Authors: Srinivasan Parthiban Ragavi, Dhakshanamurthy Thirumalai, Indira Viswambaran Asharani, Vidya Radhakrishnan, Peter Jerome

Institutions: Vellore Institute of Technology University, Thiruvalluvar University, Yeungnam University

Language: English

Topic: Molecular Sensors and Ion Detection

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: gold

Estimated APC paid: $2,100