Publications by authors named "Guillermo Carrone"

Article Synopsis
  • The study introduces a new way to generate nitroxyl (HNO) without using liquids or harsh conditions, by reacting a gas with a solid donor.
  • This method is quick and cost-effective, allowing for the production of gaseous HNO.
  • The detection of HNO was achieved through both indirect methods, like measuring nitrous oxide with infrared spectroscopy, and direct methods using mass spectrometry and an electrochemical sensor.
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We describe a method based on a caged fluorescent molecule that can act as a chemical two-photon probe. It is composed of an organic fluorophore and a ruthenium-bipyridine complex that acts as a photoremovable quencher. For the fluorophore to be emissive, two independent photons must act on the molecule: the first photon frees the fluorescent ligand from the Ru complex and the second photon excites the fluorescence.

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Ruthenium bis(bipyridine) complexes have proved to be useful as phototriggers for visible and IR-light photodelivery of molecules. They usually expel one ligand heterolytically upon absorption of blue or green light. However, their absorption capabilities at wavelengths longer than 500 nm are poor.

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We describe a complete system for optical pH manipulation and imaging. The system consists of a photoactive Ruthenium complex capable of inducing a change of more than 5 pH units at the nanosecond time scale. A compatible imaging system acquires microscopic pH images at 1200 fps using a nonexpensive commercial digital camera and an LED illumination system.

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