Fluorescent Properties of Polymer Systems with Negative Photochromism Based on Complexes of Spiropyran with Metal Ions

2021 ◽  
Vol 94 (3) ◽  
pp. 289-293
Author(s):  
V. A. Barachevsky ◽  
T. M. Valova
Keyword(s):  
Metal Ions ◽  
Fluorescent Properties ◽  
Polymer Systems ◽  
Negative Photochromism

Quinoline- and isoquinoline-derived ligand design on TQEN (N,N,N′,N′-tetrakis(2-quinolylmethyl)ethylenediamine) platform for fluorescent sensing of specific metal ions and phosphate species

2020 ◽  
Vol 49 (48) ◽  
pp. 17494-17504 ◽  
Author(s):  
Yuji Mikata
Keyword(s):  
Metal Ions ◽  
Fluorescent Probes ◽  
Metal Binding ◽  
Ligand Design ◽  
Fluorescent Properties ◽  
Fluorescent Sensing ◽  
Phosphate Species ◽  
Specific Metal

Utilizing the unique metal-binding and fluorescent properties of methoxy-substituted (iso)quinolines, varieties of fluorescent probes were developed from TQEN (N,N,N′,N′-tetrakis(2-quinolylmethyl)ethylenediamine) structure.

scholarly journals Magneto-Fluorescent Hybrid Sensor CaCO3-Fe3O4-AgInS2/ZnS for the Detection of Heavy Metal Ions in Aqueous Media

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4373
Author(s):  
Danil Kurshanov ◽  
Pavel Khavlyuk ◽  
Mihail Baranov ◽  
Aliaksei Dubavik ◽  
Andrei Rybin ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Aqueous Media ◽  
Semiconductor Quantum Dots ◽  
Fluorescent Properties ◽  
Fluorescence Sensors ◽  
The Past ◽  
Porous Calcium Carbonate ◽  
Toxic Ions

Heavy metal ions are not subject to biodegradation and could cause the environmental pollution of natural resources and water. Many of the heavy metals are highly toxic and dangerous to human health, even at a minimum amount. This work considered an optical method for detecting heavy metal ions using colloidal luminescent semiconductor quantum dots (QDs). Over the past decade, QDs have been used in the development of sensitive fluorescence sensors for ions of heavy metal. In this work, we combined the fluorescent properties of AgInS2/ZnS ternary QDs and the magnetism of superparamagnetic Fe3O4 nanoparticles embedded in a matrix of porous calcium carbonate microspheres for the detection of toxic ions of heavy metal: Co2+, Ni2+, and Pb2+. We demonstrate a relationship between the level of quenching of the photoluminescence of sensors under exposure to the heavy metal ions and the concentration of these ions, allowing their detection in aqueous solutions at concentrations of Co2+, Ni2+, and Pb2+ as low as ≈0.01 ppm, ≈0.1 ppm, and ≈0.01 ppm, respectively. It also has importance for application of the ability to concentrate and extract the sensor with analytes from the solution using a magnetic field.

scholarly journals Live-Cell Imaging of Physiologically Relevant Metal Ions Using Genetically Encoded FRET-Based Probes

Cells ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 492 ◽  
Author(s):  
Helmut Bischof ◽  
Sandra Burgstaller ◽  
Markus Waldeck-Weiermair ◽  
Thomas Rauter ◽  
Maximilian Schinagl ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Alkali Metals ◽  
Fluorescent Protein ◽  
Ion Homeostasis ◽  
Large Cell ◽  
Ion Binding ◽  
Fluorescent Properties ◽  
Metal Ion Homeostasis ◽  
Cellular Metal

Essential biochemical reactions and processes within living organisms are coupled to subcellular fluctuations of metal ions. Disturbances in cellular metal ion homeostasis are frequently associated with pathological alterations, including neurotoxicity causing neurodegeneration, as well as metabolic disorders or cancer. Considering these important aspects of the cellular metal ion homeostasis in health and disease, measurements of subcellular ion signals are of broad scientific interest. The investigation of the cellular ion homeostasis using classical biochemical methods is quite difficult, often even not feasible or requires large cell numbers. Here, we report of genetically encoded fluorescent probes that enable the visualization of metal ion dynamics within individual living cells and their organelles with high temporal and spatial resolution. Generally, these probes consist of specific ion binding domains fused to fluorescent protein(s), altering their fluorescent properties upon ion binding. This review focuses on the functionality and potential of these genetically encoded fluorescent tools which enable monitoring (sub)cellular concentrations of alkali metals such as K+, alkaline earth metals including Mg2+ and Ca2+, and transition metals including Cu+/Cu2+ and Zn2+. Moreover, we discuss possible approaches for the development and application of novel metal ion biosensors for Fe2+/Fe3+, Mn2+ and Na+.

Structures, Fluorescent Properties of the d 10 Metal Ions Compounds Based on Molecular Clips

2008 ◽  
Vol 38 (7) ◽  
pp. 591-597 ◽  
Author(s):  
Li-Xia Xie ◽  
Xian-Fu Zheng ◽  
Xin Li ◽  
Chao Yuan ◽  
Chun-Ying Duan
Keyword(s):  
Metal Ions ◽  
Fluorescent Properties ◽  
Molecular Clips

scholarly journals Polymer-Stretching-Regulated Microscopic Photoluminescence of Vibration-Induced Emission (VIE) Molecules

2021 ◽  
Author(s):  
Fan Gu ◽  
Yuanhao Li ◽  
Tao Jiang ◽  
Jianhua Su ◽  
Xiang Ma ◽  
...  
Keyword(s):  
Ethylene Vinyl Acetate ◽  
Molecular Entity ◽  
Fluorescent Properties ◽  
Polymer Systems ◽  
Blend Films ◽  
Visual Evidence ◽  
Important Relationship ◽  
Photoluminescence Mechanism ◽  
Multicolor Fluorescence ◽  
Temperature Responses

Photoluminescence materials play an inseparable role in the application of polymer systems. However, intrinsic polymer systems have rarely been intuitively interpreted based on photoluminescence regulation. A novel photoluminescence mechanism called vibration-induced emission (VIE) has recently drawn great attention due to its multicolor fluorescence from a single molecular entity. Based on the unique fluorescent properties of VIE molecules, we doped 9,14-diphenyl-9,14-dihydrodibenzo[a,c]-phenazine (DPAC) and its derivative DPAC-CN in two stretchable polymers, <a></a><a>poly(ε-caprolactone)</a> and ethylene vinyl acetate (EVA) copolymer, to explore the important relationship between luminophores and polymer systems. This research focused on the multicolor photoluminescence of the obtained blend films that resulted from stretching exertions and temperature responses. The successive conformational alterations of VIE molecules endowed continuous photoluminescent changes. Meanwhile, the multicolor variations also provided specific visual evidence regarding the amplified tensile stresses and microstructural changes in the polymer. This demonstration will therefore provide advantageous insights into the development of functional optical materials.

scholarly journals Polymer-Stretching-Regulated Microscopic Photoluminescence of Vibration-Induced Emission (VIE) Molecules

2021 ◽  
Author(s):  
Fan Gu ◽  
Yuanhao Li ◽  
Tao Jiang ◽  
Jianhua Su ◽  
Xiang Ma ◽  
...  
Keyword(s):  
Ethylene Vinyl Acetate ◽  
Molecular Entity ◽  
Fluorescent Properties ◽  
Polymer Systems ◽  
Blend Films ◽  
Visual Evidence ◽  
Important Relationship ◽  
Photoluminescence Mechanism ◽  
Multicolor Fluorescence ◽  
Temperature Responses

Photoluminescence materials play an inseparable role in the application of polymer systems. However, intrinsic polymer systems have rarely been intuitively interpreted based on photoluminescence regulation. A novel photoluminescence mechanism called vibration-induced emission (VIE) has recently drawn great attention due to its multicolor fluorescence from a single molecular entity. Based on the unique fluorescent properties of VIE molecules, we doped 9,14-diphenyl-9,14-dihydrodibenzo[a,c]-phenazine (DPAC) and its derivative DPAC-CN in two stretchable polymers, <a></a><a>poly(ε-caprolactone)</a> and ethylene vinyl acetate (EVA) copolymer, to explore the important relationship between luminophores and polymer systems. This research focused on the multicolor photoluminescence of the obtained blend films that resulted from stretching exertions and temperature responses. The successive conformational alterations of VIE molecules endowed continuous photoluminescent changes. Meanwhile, the multicolor variations also provided specific visual evidence regarding the amplified tensile stresses and microstructural changes in the polymer. This demonstration will therefore provide advantageous insights into the development of functional optical materials.

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