Results 21 to 30 of about 2,736 (189)
A Dual-Emissive Organoplatinum(II) Probe Enables Ratiometric NIR and Phosphorescence Lifetime Imaging of Cell Membrane Integrity [PDF]
Chemical & Biomedical ImagingCheng Ouyang +3 more
doaj +2 more sources
Journal of Innovative Optical Health Sciences, 2021 Oxygenation of tissues plays an important role in the development and progression of tumor to treatment effects. Method of metalloporphyrines phosphorescence quenching by oxygen is one of the ways to measure dynamics of the oxygen concentration in the ...
Natalia Kazachkina +3 more
doaj +1 more source
Photon counting phosphorescence lifetime imaging with TimepixCam [PDF]
Review of Scientific Instruments, 2017 TimepixCam is a novel fast optical imager based on an optimized silicon pixel sensor with a thin entrance window and read out by a Timepix Application Specific Integrated Circuit. The 256 × 256 pixel sensor has a time resolution of 15 ns at a sustained frame rate of 10 Hz. We used this sensor in combination with an image intensifier for wide-field time-
Liisa M. Hirvonen +3 more
openaire +4 more sources
Biocompatible Phosphorescent O2 Sensors Based on Ir(III) Complexes for In Vivo Hypoxia Imaging
Biosensors, 2023 In this work, we obtained three new phosphorescent iridium complexes (Ir1–Ir3) of general stoichiometry [Ir(N^C)2(N^N)]Cl decorated with oligo(ethylene glycol) fragments to make them water-soluble and biocompatible, as well as to protect them from ...
Mozhgan Samandarsangari +6 more
doaj +1 more source
Phosphorescent O2-Probes Based on Ir(III) Complexes for Bioimaging Applications
Chemosensors, 2023 The design, synthesis, and investigation of new molecular oxygen probes for bioimaging, based on phosphorescent transition metal complexes are among the topical problems of modern chemistry and advanced bioimaging.
Mozhgan Samandarsangari +5 more
doaj +1 more source
STAR Protocols, 2022 Summary: The ability to quantify partial pressure of oxygen (pO2) is of primary importance for studies of metabolic processes in health and disease. Here, we present a protocol for imaging of oxygen distributions in tissue and vasculature of the cerebral
Eva Erlebach +6 more
doaj +1 more source
Luminescent probes for luminescence lifetime sensing and imaging in live cells: a narrative review
Journal of Bio-X Research, 2020 . Luminescence (mostly fluorescence and phosphorescence) probes are a powerful tool widely used in the life sciences research. They can be used, for example, in the quantitative analysis of physiological parameters, visualization of different cell ...
Kaixuan Nie +4 more
doaj +1 more source
High resolution imaging of intracellular oxygen concentration by phosphorescence lifetime [PDF]
Scientific Reports, 2015 AbstractOptical methods using phosphorescence quenching by oxygen are suitable for sequential monitoring and non-invasive measurements for oxygen concentration (OC) imaging within cells. Phosphorescence intensity measurement is widely used with phosphorescent dyes. These dyes are ubiquitously but heterogeneously distributed inside the whole cell.
Hiromi Kurokawa +10 more
openaire +2 more sources
Advanced Science, 2021 The encapsulation and/or surface modification can stabilize and protect the phosphorescence bio‐probes but impede their intravenous delivery across biological barriers.
Cheng‐Ham Wu +16 more
doaj +1 more source
Molecules, 2021 New water-soluble polynorbornenes P1–P4 containing oligoether, amino acid groups and luminophoric complexes of iridium(III) were synthesized by ring-opening metathesis polymerization.
Leonid N. Bochkarev +11 more
doaj +1 more source