Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Biocompatible Ir(III) Complexes as Oxygen Sensors for Phosphorescence Lifetime Imaging. / Критченков, Илья Сергеевич; Соломатина, Анастасия Игоревна; Козина, Дарья Олеговна; Порсев, Виталий Вениаминович; Соколов, Виктор Владимирович; Ширманова, Марина; Лукина, Мария; Комарова, Анастасия Денисовна; Щеславский, Владислав; Беляева, Татьяна; Литвинов, Илья; Салова, Анна; Корнилова, Елена Сергеевна; Качкин, Даниил Валерьевич; Туник, Сергей Павлович.
в: Molecules, Том 26, № 10, 2898, 13.05.2021.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Biocompatible Ir(III) Complexes as Oxygen Sensors for Phosphorescence Lifetime Imaging
AU - Критченков, Илья Сергеевич
AU - Соломатина, Анастасия Игоревна
AU - Козина, Дарья Олеговна
AU - Порсев, Виталий Вениаминович
AU - Соколов, Виктор Владимирович
AU - Ширманова, Марина
AU - Лукина, Мария
AU - Комарова, Анастасия Денисовна
AU - Щеславский, Владислав
AU - Беляева, Татьяна
AU - Литвинов, Илья
AU - Салова, Анна
AU - Корнилова, Елена Сергеевна
AU - Качкин, Даниил Валерьевич
AU - Туник, Сергей Павлович
N1 - Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/5/13
Y1 - 2021/5/13
N2 - 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(NˆC) 2 (NˆN)] + complexes (NˆC–benzothienyl-phenanthridine based cyclometalated ligand; NˆN–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.
AB - 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(NˆC) 2 (NˆN)] + complexes (NˆC–benzothienyl-phenanthridine based cyclometalated ligand; NˆN–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.
KW - Ir(III) complexes
KW - NIR emitters
KW - Oxygen sensing
KW - Phosphorescence lifetime imaging
KW - Biocompatible Materials/chemistry
KW - Cricetulus
KW - Humans
KW - Molecular Conformation
KW - Iridium/chemistry
KW - Luminescence
KW - Subcellular Fractions/metabolism
KW - Animals
KW - Proton Magnetic Resonance Spectroscopy
KW - Oxygen/analysis
KW - HeLa Cells
KW - CHO Cells
KW - MITOCHONDRIA
KW - oxygen sensing
KW - CYCLOMETALATED PLATINUM(II)
KW - phosphorescence lifetime imaging
KW - EMISSIVE BEHAVIOR
KW - LUMINESCENT RHENIUM(I)
KW - CELLS
KW - PHOTOPHYSICAL PROPERTIES
KW - PROBES
KW - NANOPARTICLES
KW - IRIDIUM(III) POLYPYRIDINE COMPLEXES
KW - IN-VIVO
UR - http://www.scopus.com/inward/record.url?scp=85106589070&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/04bc84d5-0a60-3585-86e4-3829fc506741/
U2 - 10.3390/molecules26102898
DO - 10.3390/molecules26102898
M3 - Article
C2 - 34068190
VL - 26
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 10
M1 - 2898
ER -
ID: 76792612