“ICT-not-quenching” near infrared ratiometric fluorescent detection of picric acid in aqueous media

2013 ◽  
Vol 49 (42) ◽  
pp. 4764 ◽  
Author(s):  
Yongqian Xu ◽  
Benhao Li ◽  
Weiwei Li ◽  
Jie Zhao ◽  
Shiguo Sun ◽  
...  
Keyword(s):  
Near Infrared ◽  
Picric Acid ◽  
Aqueous Media ◽  
Fluorescent Detection

Selective and sensitive detection of picric acid based on a water-soluble fluorescent probe

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 38328-38331 ◽  
Author(s):  
Haiqin Liang ◽  
Zhiyi Yao ◽  
Wenqi Ge ◽  
Yadong Qiao ◽  
Li Zhang ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Picric Acid ◽  
Aqueous Media ◽  
Water Soluble ◽  
Sensitive Detection ◽  
Fluorescent Detection ◽  
Test Strips

A pyrene-based probe has been applied for the fluorescent detection of picric acid in aqueous media and on test strips.

scholarly journals Biocompatible Ir(III) Complexes as Oxygen Sensors for Phosphorescence Lifetime Imaging

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2898
Author(s):  
Ilya S. Kritchenkov ◽  
Anastasia I. Solomatina ◽  
Daria O. Kozina ◽  
Vitaly V. Porsev ◽  
Victor V. Sokolov ◽  
...  
Keyword(s):  
Near Infrared ◽  
Biological Systems ◽  
Aqueous Media ◽  
Oxygen Sensors ◽  
Quantum Yields ◽  
Complete Agreement ◽  
Phosphorescence Lifetime ◽  
Lifetime Imaging ◽  
Nir Emission ◽  
Phosphorescence Lifetime Imaging

Synthesis of biocompatible near infrared phosphorescent complexes and their application in bioimaging as triplet oxygen sensors in live systems are still challenging areas of organometallic chemistry. We have designed and synthetized four novel iridium [Ir(N^C)2(N^N)]+ complexes (N^C–benzothienyl-phenanthridine based cyclometalated ligand; N^N–pyridin-phenanthroimidazol diimine chelate), decorated with oligo(ethylene glycol) groups to impart these emitters’ solubility in aqueous media, biocompatibility, and to shield them from interaction with bio-environment. These substances were fully characterized using NMR spectroscopy and ESI mass-spectrometry. The complexes exhibited excitation close to the biological “window of transparency”, NIR emission at 730 nm, and quantum yields up to 12% in water. The compounds with higher degree of the chromophore shielding possess low toxicity, bleaching stability, absence of sensitivity to variations of pH, serum, and complex concentrations. The properties of these probes as oxygen sensors for biological systems have been studied by using phosphorescence lifetime imaging experiments in different cell cultures. The results showed essential lifetime response onto variations in oxygen concentration (2.0–2.3 μs under normoxia and 2.8–3.0 μs under hypoxia conditions) in complete agreement with the calibration curves obtained “in cuvette”. The data obtained indicate that these emitters can be used as semi-quantitative oxygen sensors in biological systems.

Detection of Picric Acid by Terpy-Based Metallo-Supramolecular Fluorescent Coordination Polymers in Aqueous Media

2017 ◽  
Vol 35 (4) ◽  
pp. 447-456 ◽  
Author(s):  
Zhongyu Ding ◽  
Hongqing Li ◽  
Wanqing Gao ◽  
Yiquan Zhang ◽  
Chunhua Liu ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Picric Acid ◽  
Aqueous Media

Fluorescent Nanoaggregates of Pentacenequinone Derivative for Selective Sensing of Picric acid in Aqueous Media

2012 ◽  
Vol 14 (12) ◽  
pp. 3112-3115 ◽  
Author(s):  
Vandana Bhalla ◽  
Ankush Gupta ◽  
Manoj Kumar
Keyword(s):  
Picric Acid ◽  
Aqueous Media

scholarly journals Towards the fluorogenic detection of peroxide explosives through host–guest chemistry

2018 ◽  
Vol 5 (4) ◽  
pp. 171787 ◽  
Author(s):  
Estefanía Almenar ◽  
Ana M. Costero ◽  
Pablo Gaviña ◽  
Salvador Gil ◽  
Margarita Parra
Keyword(s):  
Aqueous Media ◽  
Sensory Systems ◽  
Fluorescent Detection ◽  
Cyclodextrin Derivatives ◽  
Triacetone Triperoxide ◽  
Diacetone Diperoxide ◽  
Guest Chemistry

Two dansyl-modified β-cyclodextrin derivatives ( 1 and 2 ) have been synthesized as host–guest sensory systems for the direct fluorescent detection of the peroxide explosives diacetone diperoxide (DADP) and triacetone triperoxide (TATP) in aqueous media. The sensing is based on the displacement of the dansyl moiety from the cavity of the cyclodextrin by the peroxide guest resulting in a decrease of the intensity of the fluorescence of the dye. Both systems showed similar fluorescent responses and were more sensitive towards TATP than DADP.

Tunable plasmon resonance of molybdenum oxide nanoparticles synthesized in non-aqueous media

2017 ◽  
Vol 53 (94) ◽  
pp. 12680-12683 ◽  
Author(s):  
Seung Hyuk Lee ◽  
Hiroyasu Nishi ◽  
Tetsu Tatsuma
Keyword(s):  
Molybdenum Oxide ◽  
Plasmon Resonance ◽  
Near Infrared ◽  
Aqueous Media ◽  
Oxide Nanoparticles ◽  
Molybdenum Oxide Nanoparticles

MoO2 and MoO3−x nanoparticles that exhibit tunable plasmon resonance in the visible and near infrared ranges are synthesized in non-aqueous media.

A Luciferase/Single-Walled Carbon Nanotube Conjugate for Near-Infrared Fluorescent Detection of Cellular ATP

2010 ◽  
Vol 122 (8) ◽  
pp. 1498-1501 ◽  
Author(s):  
Jong-Ho Kim ◽  
Jin-Ho Ahn ◽  
Paul W. Barone ◽  
Hong Jin ◽  
Jingqing Zhang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Near Infrared ◽  
Fluorescent Detection ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon
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