59 research outputs found
A Chromo-Fluorogenic Synthetic Canary for CO Detection Based on a Pyrenylvinyl Ruthenium(II) Complex
The chromo-fluorogenic detection of carbon
monoxide in air has been achieved using a simple,
inexpensive system based on ruthenium(II). This probe
shows exceptional sensitivity and selectivity in its sensing
behavior in the solid state. A color response visible to the
naked eye is observed at 5 ppb of CO, and a remarkably
clear color change occurs from orange to yellow at the
onset of toxic CO concentrations (100 ppm) in air. Even
greater sensitivity (1 ppb) can be achieved through a
substantial increase in turn-on emission fluorescence in the
presence of carbon monoxide, both in air and in solution.
No response is observed with other gases including water
vapor. Immobilization of the probe on a cellulose strip
allows the system to be applied in its current form in a
simple optoelectronic device to give a numerical reading
and/or alarm.Financial support from the Spanish Government (project MAT2012-38429-C04) and the Generalitat Valenciana (project PROMETEO/2009/016) is gratefully acknowledged. M.E.M. is grateful to the Spanish Ministerio de Ciencia e Innovacion for an FPU grant. J.D.E.T.W.-E. and A.T. acknowledge the Leverhulme Trust for a grant (RPG-2012-634).Moragues Pons, ME.; Toscani, A.; SancenĂłn Galarza, F.; MartĂnez-Máñez, R.; White, A.; Wilton-Ely, JDET. (2014). A Chromo-Fluorogenic Synthetic Canary for CO Detection Based on a Pyrenylvinyl Ruthenium(II) Complex. Journal of the American Chemical Society. 136(34):11930-11933. https://doi.org/10.1021/ja507014aS11930119331363
Facile Preparation of Drug-Loaded Tristearin Encapsulated Superparamagnetic Iron Oxide Nanoparticles Using Coaxial Electrospray Processing
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link
Chromo-fluorogenic probes for carbon monoxide detection
[EN] The sensing of carbon monoxide (CO) using electrochemical cells or semiconducting metal oxides has led to inexpensive alarms for the home and workplace. It is now recognised that chronic exposure to low levels of CO also poses a significant health risk. It is perhaps surprising therefore that the CO is used in cell-signalling pathways and plays a growing role in therapy. However, the selective monitoring of low levels of CO remains challenging, and it is this area that has benefited from the development of probes which give a colour or fluorescence response. This feature article covers the design of chromofluorogenic probes and their application to CO sensing in air, solution and in cells.The authors wish to express their gratitude to the Spanish Government (project MAT2012-38429-CO4 and MAT2015-64139-C4-1) and Generalitat Valenciana (project PROMETEOII/2014/047) for their support. C. M.-H. thanks the Spanish Ministry of Economy and Competitiveness for her grant. The Leverhulme Trust is gratefully acknowledged for a studentship to A. T. (RPG-2012-634). The Imperial College Global Engagements fund is thanked by J. D. E. T. W.-E. for provision of a travel grant.MarĂn-Hernández, C.; Toscani, A.; SancenĂłn Galarza, F.; Wilton-Ely, JDET.; MartĂnez-Máñez, R. (2016). Chromo-fluorogenic probes for carbon monoxide detection. Chemical Communications. 52(35):5902-5911. https://doi.org/10.1039/c6cc01335jS59025911523
Multimetallic Arrays: Bi-, Tri-, Tetra-, and Hexametallic Complexes Based on Gold(I) and Gold(III) and the Surface Functionalization of Gold Nanoparticles with Transition Metals
Bifunctional Chalcogen Linkers for the Stepwise Generation of Multimetallic Assemblies and Functionalized Nanoparticles
Multimetallic Complexes and Functionalized Nanoparticles Based on Unsymmetrical Dithiocarbamate Ligands with Allyl and Propargyl Functionality
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