Highly efficient and selective supramolecular hydrogel sensor based on rhodamine 6G derivatives

Abstract

A mercury ion sensitive fluorescent functional monomer was synthesized based on rhodamine 6G, and two highly-effective approaches about the research and development of novel macroscopic hydrogel sensor were reported.

Interaction of the Fluorescent Cell-Labeling Dye Rhodamine 6G with Low-Molecular-Weight Compounds: A Comparative QCM Study of Adsorption Capacity of Rh6G for Gaseous Analytes

“…0.1 nm/min) at a temperature of 297 ± 2 °K. Furthermore, 100 nm thick films were Sensors based on Rhodamine 6G can be used for water vapor detection, as hydrogel sensors capable of detecting Hg 2+ in flowing or stagnant water [3], to detect the physiologically important ions of transition metals, such as Cu(II) and Fe(III) [4]. The idea of detecting heavy and transition metal ions using different characteristics of the same Rh6G sensors in living organisms is particularly attractive [5,6].…”

“…In particular, the use of rhodamine-based luminescent chemosensors that emit in the near-infrared range (NIR) is considered for the detection of metal ions such as Al(III), Cu(II), Hg(II), Co(II), Fe(III), Au(III), and Cr(III) [2]. Sensors based on Rhodamine 6G can be used for water vapor detection, as hydrogel sensors capable of detecting Hg 2+ in flowing or stagnant water [3], to detect the physiologically important ions of transition metals, such as Cu(II) and Fe(III) [4]. The idea of detecting heavy and transition metal ions using different characteristics of the same Rh6G sensors in living organisms is particularly attractive [5,6].…”

Fluorescein Derivative Immobilized Optical Hydrogels: Fabrication and Its Application for Detection of H2O2

“…Hydrogen peroxide (H 2 O 2 ), a typical reactive oxygen species (ROS), functions as a key throughout cell growth, proliferation, host defense, and signal transmission pathways under a physiological environment [ 1 , 2 ]. However, the chemical and pharmaceutical industries inevitably use hydrogen peroxide as an oxidizer for related production activities, resulting in the discharge of excessive hydrogen peroxide in wastewater, which severely impacts people’s living environment and the water treatment system [ 3 ]. Excessive H 2 O 2 in the human body triggers the pathogenesis of many disorders, such as inflammation, Alzheimer’s disease, cardiovascular disease and, more seriously, cancer [ 4 ].…”

Aggregation-Induced Emission Luminogen-Encapsulated Fluorescent Hydrogels Enable Rapid and Sensitive Quantitative Detection of Mercury Ions

“…The following supporting information can be downloaded at: , Figure S1: Molecular structure of TPE-RB; Figure S2: Schematic image of a 3D-printed mold for synthesizing TR hydrogels; Figure S3: Fluorescence excitation spectrum and emission spectrum of TPE-RB; Figure S4: Volume optimization of TR hydrogels; Figure S5: The PL intensity of the supernatant and TR hydrogels within 40 min; Figure S6: Quantitative assay for Hg 2+ in ultrapure water, using the TR hydrogel chemosensor; Figure S7: Effect of pH on fluorescence response of the TR hydrogel chemosensor; Figure S8: PL intensity of TPE-RB in Hg 2+ -spiked water after Hg 2+ was adsorbed by different numbers of agarose hydrogels; Figure S9: Quantitative calibration curve of Hg 2+ using TPE-RB probes; Figure S10: Locations of the sampling sites of the freshwater lakes in Nanchang City, Jiangxi Province; Table S1: Comparison of the sensitivities and linear ranges of different fluorescent sensors for Hg 2+ detection; Table S2: Analysis of Hg 2+ contamination in real lake samples by ICP-AES and TR hydrogels methods [ 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ].…”