ArticleJournal of the American Chemical Society2009
Two-photon absorbing nanocrystal sensors for ratiometric detection of oxygen.
Article in Journal of the American Chemical Society, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed, 122 citations in OpenAlex.
- A Deep-Red-Absorbing Osmium(II) Complex as a Photosensitizer for Photodynamic Therapy Inducing Immunogenic Cell Death.Angewandte Chemie (International ed. in English) · 2026Article
- Toward Imaging Defect-Mediated Energy Transfer between Single Nanocrystal Donors and Single Molecule Acceptors.Chemical & biomedical imaging · 2023Article
- Cyclometalated iridium-coumarin ratiometric oxygen sensors: improved signal resolution and tunable dynamic ranges.Chemical science · 2022Article
- Crystal structure of tris-(4,7-diphenyl-1,10-phenanthroline-κActa crystallographica. Section E, Crystallographic communications · 2022Article
- Cyclometalated iridium-BODIPY ratiometric OChemical science · 2019Article
- Quantum Dot-Dye Conjugates for Biosensing, Imaging, and Therapy.Advanced healthcare materials · 2018Review
- Evaluating the potential of using quantum dots for monitoring electrical signals in neurons.Nature nanotechnology · 2018Review
- Article
- Bright, "Clickable" Porphyrins for the Visualization of Oxygenation under Ambient Light.Angewandte Chemie (International ed. in English) · 2015Article
- Micelle-Encapsulated Quantum Dot-Porphyrin Assemblies as in Vivo Two-Photon Oxygen Sensors.Journal of the American Chemical Society · 2015Article
- QD-Based FRET Probes at a Glance.Sensors (Basel, Switzerland) · 2015Review
- Pyrene-Capped CdSe@ZnS Nanoparticles as Sensitive Flexible Oxygen Sensors in Non-Aqueous Media.ChemistryOpen · 2014Article
- Probing the Quenching of Quantum Dot Photoluminescence by Peptide-Labeled Ruthenium(II) Complexes.The journal of physical chemistry. C, Nanomaterials and interfaces · 2014Article
- Metabolic tumor profiling with pH, oxygen, and glucose chemosensors on a quantum dot scaffold.Inorganic chemistry · 2014Article
- Two-photon oxygen sensing with quantum dot-porphyrin conjugates.Inorganic chemistry · 2013Article
- FRET excited ratiometric oxygen sensing in living tissue.Journal of neuroscience methods · 2013Article
- Conformational control of energy transfer: a mechanism for biocompatible nanocrystal-based sensors.Angewandte Chemie (International ed. in English) · 2013Article
- Indicators for optical oxygen sensors.Bioanalytical reviews · 2012Article
- Energy Transfer of CdSe/ZnS Nanocrystals Encapsulated with Rhodamine-Dye Functionalized Poly(acrylic acid).Journal of photochemistry and photobiology. A, Chemistry · 2012Article
- Evaluation of phototoxicity of dendritic porphyrin-based phosphorescent oxygen probes: an in vitro study.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2011Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
Two nanocrystal-osmium(II) polypyridyl (NC-Os(II)PP) conjugates have been designed to detect oxygen in biological environments. Polypyridines appended with a single free amine were linked with facility to a carboxylic acid functionality of a semiconductor NC overlayer to afford a biologically stable amide bond. The Os(II)PP complexes possess broad absorptions that extend into the red spectral region; this absorption feature makes them desirable acceptors of energy from NC donors. Fluorescence resonance energy transfer (FRET) from the NC to the Os(II)PP causes an enhanced Os(II)PP emission with a concomitant quenching of the NC emission. Owing to the large two-photon absorption cross-section of the NCs, FRET from the NC to the Os(II)PP can be established under two-photon excitation conditions. In this way, two-photon processes of metal polypyridyl complexes can be exploited for sensing. The emission of the NC is insensitive to oxygen, even at 1 atm, whereas excited states of both osmium complexes are quenched in the presence of oxygen. The NC emission may thus be used as an internal reference to correct for fluctuations in the photoluminescence intensity signal. These properties taken together establish NC-Os(II)PP conjugates as competent ratiometric, two-photon oxygen sensors for application in biological microenvironments.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.