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1

Saito, Takashi, Noriyuki Asakura, Toshiaki Kamachi, and Ichiro Okura. "Oxygen concentration imaging in a single living cell using phosphorescence lifetime of Pt-porphyrin." Journal of Porphyrins and Phthalocyanines 11, no. 03 (2007): 160–64. http://dx.doi.org/10.1142/s1088424607000205.

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An oxygen concentration imaging system inside a single living cell, based on the phosphorescence lifetime, under a microscope was developed. A fluorescence microscope equipped with a pulsed Nd : YAG laser (532 nm) and a CCD camera equipped with a gated imaging intensifier was used. When the cell was incubated with the phosphorescent compound, platinum tetra-(carboxyphenyl)-porphyrin ( PtTCPP ) was incorporated and localized in the cell. As the phosphorescence intensity depends not only on the concentration of a quencher such as oxygen but also on the concentration of phosphorescent molecules,
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2

Plant, Randall L., and David H. Burns. "Quantitative, Depth-Resolved Imaging of Oxygen Concentration by Phosphorescence Lifetime Measurement." Applied Spectroscopy 47, no. 10 (1993): 1594–99. http://dx.doi.org/10.1366/0003702934334868.

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Minimally invasive determination of oxygen concentration can be made by measuring phosphorescence lifetime. We describe a technique for depth-resolved measurements of oxygen concentration using confocal imaging of phosphorescence lifetime. A confocal imaging system is used to obtain depth-resolved measurements of phosphorescence decay. The spatial resolution of the system is characterized in terms of the Line Spread Function and shown to be similar in both lateral and depth directions. Lifetimes are calculated with the use of the Rapid Lifetime Determination technique. One- and two-dimensional
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3

Shcheslavskiy, V. I., A. Neubauer, R. Bukowiecki, F. Dinter, and W. Becker. "Combined fluorescence and phosphorescence lifetime imaging." Applied Physics Letters 108, no. 9 (2016): 091111. http://dx.doi.org/10.1063/1.4943265.

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4

Tian, Wenming, Liezheng Deng, Shengye Jin, et al. "Singlet Oxygen Phosphorescence Lifetime Imaging Based on a Fluorescence Lifetime Imaging Microscope." Journal of Physical Chemistry A 119, no. 14 (2015): 3393–99. http://dx.doi.org/10.1021/acs.jpca.5b01504.

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5

Apreleva, Sovia V., David F. Wilson, and Sergei A. Vinogradov. "Tomographic imaging of oxygen by phosphorescence lifetime." Applied Optics 45, no. 33 (2006): 8547. http://dx.doi.org/10.1364/ao.45.008547.

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6

Hirvonen, Liisa M., Merlin Fisher-Levine, Klaus Suhling, and Andrei Nomerotski. "Photon counting phosphorescence lifetime imaging with TimepixCam." Review of Scientific Instruments 88, no. 1 (2017): 013104. http://dx.doi.org/10.1063/1.4973717.

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7

Kritchenkov, Ilya S., Anastasia I. Solomatina, Daria O. Kozina, et al. "Biocompatible Ir(III) Complexes as Oxygen Sensors for Phosphorescence Lifetime Imaging." Molecules 26, no. 10 (2021): 2898. http://dx.doi.org/10.3390/molecules26102898.

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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(N^C)2(N^N)]+ complexes (N^C–benzothienyl-phenanthridine based cyclometalated ligand; N^N–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 chara
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8

Hao, Liang, Zhi-Wei Li, Dong-Yang Zhang, et al. "Monitoring mitochondrial viscosity with anticancer phosphorescent Ir(iii) complexes via two-photon lifetime imaging." Chemical Science 10, no. 5 (2019): 1285–93. http://dx.doi.org/10.1039/c8sc04242j.

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9

Wang, Chenmao, Zongyue Cheng, Wenbiao Gan, and Meng Cui. "Line scanning mechanical streak camera for phosphorescence lifetime imaging." Optics Express 28, no. 18 (2020): 26717. http://dx.doi.org/10.1364/oe.402870.

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10

Soloviev, Vadim, David Wilson, and Sergei Vinogradov. "Phosphorescence lifetime imaging in turbid media: the forward problem." Applied Optics 42, no. 1 (2003): 113. http://dx.doi.org/10.1364/ao.42.000113.

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11

Zhang, Changli, Minsheng Liu, Shaoxian Liu, et al. "Phosphorescence Lifetime Imaging of Labile Zn2+ in Mitochondria via a Phosphorescent Iridium(III) Complex." Inorganic Chemistry 57, no. 17 (2018): 10625–32. http://dx.doi.org/10.1021/acs.inorgchem.8b01272.

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12

Lloyd, David, Catrin F. Williams, K. Vijayalakshmi, et al. "Intracellular oxygen: Similar results from two methods of measurement using phosphorescent nanoparticles." Journal of Innovative Optical Health Sciences 07, no. 02 (2014): 1350041. http://dx.doi.org/10.1142/s1793545813500417.

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The ability to resolve the spatio-temporal complexity of intracellular O 2 distribution is the "Holy Grail" of cellular physiology. In an effort to obtain a minimally invasive approach to the mapping of intracellular O 2 tensions, two methods of phosphorescent lifetime imaging microscopy were compared in the current study and gave similar results. These were two-photon confocal laser scanning microscopy with pinhole shifting, and picosecond time-resolved epi-phosphorescence microscopy using a single 0.5 μm focused spot. Both methods utilized Ru coordination complex embedded nanoparticles (45 n
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13

Akiyama, H., I. Takahashi, Y. Shimoda, R. Mukai, T. Yoshihara, and S. Tobita. "Ir(iii) complex-based oxygen imaging of living cells and ocular fundus with a gated ICCD camera." Photochemical & Photobiological Sciences 17, no. 6 (2018): 846–53. http://dx.doi.org/10.1039/c8pp00122g.

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14

Wanek, Justin, Norman P. Blair, and Mahnaz Shahidi. "Outer Retinal Oxygen Consumption of Rat by Phosphorescence Lifetime Imaging." Current Eye Research 37, no. 2 (2011): 132–37. http://dx.doi.org/10.3109/02713683.2011.629071.

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15

Dmitriev, Ruslan I., Xavier Intes, and Margarida M. Barroso. "Luminescence lifetime imaging of three-dimensional biological objects." Journal of Cell Science 134, no. 9 (2021): 1–17. http://dx.doi.org/10.1242/jcs.254763.

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ABSTRACT A major focus of current biological studies is to fill the knowledge gaps between cell, tissue and organism scales. To this end, a wide array of contemporary optical analytical tools enable multiparameter quantitative imaging of live and fixed cells, three-dimensional (3D) systems, tissues, organs and organisms in the context of their complex spatiotemporal biological and molecular features. In particular, the modalities of luminescence lifetime imaging, comprising fluorescence lifetime imaging (FLI) and phosphorescence lifetime imaging microscopy (PLIM), in synergy with Förster reson
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16

Hirakawa, Yosuke, Kiichi Mizukami, Toshitada Yoshihara, et al. "Intravital phosphorescence lifetime imaging of the renal cortex accurately measures renal hypoxia." Kidney International 93, no. 6 (2018): 1483–89. http://dx.doi.org/10.1016/j.kint.2018.01.015.

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17

Zhu, Zece, Ye Sun, Teng Ma, Di Tian, and Jintao Zhu. "Luminescence lifetime imaging of ultra-long room temperature phosphorescence on a smartphone." Analytical and Bioanalytical Chemistry 413, no. 12 (2021): 3291–97. http://dx.doi.org/10.1007/s00216-021-03266-y.

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18

LO, LEU-WEI, JA-AN A. HO, YEN-HSIUNG CHANG, CHIA-HUA CHANG, and CHUNG-SHI YANG. "POTENTIAL USAGE OF LIPOSOME-ENCAPSULATED PHOSPHOR FOR IN VIVO IMAGING OF TISSUE OXYGENATION." Biomedical Engineering: Applications, Basis and Communications 16, no. 04 (2004): 224–32. http://dx.doi.org/10.4015/s101623720400030x.

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Oxygen-dependent quenching of phosphorescence can provide a quantitative measurement with high temporal resolution of tissue oxygenation in vivo. It is a real-time optical means for prognosis of diseases where the oxygen concentration is essential. Phosphorescence quenching is a noninvasive methodology, otherwise no more than minimally invasive as the phosphor is necessarily introduced into vasculature prior to the measurement. Oxyphor R2, a dendritic phosphor with twolayer of glutamates, is a suitable phosphor for oxygen measurements owing to its high water solubility. We used a frequency-dom
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19

Soloviev, Vadim Y., David F. Wilson, and Sergei A. Vinogradov. "Phosphorescence lifetime imaging in turbid media: the inverse problem and experimental image reconstruction." Applied Optics 43, no. 3 (2004): 564. http://dx.doi.org/10.1364/ao.43.000564.

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20

Hirakawa, Yosuke, Kiichi Mizukami, Toshitada Yoshihara, et al. "FP293DETERMINATION OF OXYGEN TENSION IN TUBULAR EPITHELIAL CELLS USING PHOSPHORESCENCE LIFETIME IMAGING MICROSCOPY." Nephrology Dialysis Transplantation 33, suppl_1 (2018): i130. http://dx.doi.org/10.1093/ndt/gfy104.fp293.

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21

Baggaley, Elizabeth, Igor V. Sazanovich, J. A. Gareth Williams, John W. Haycock, Stanley W. Botchway, and Julia A. Weinstein. "Two-photon phosphorescence lifetime imaging of cells and tissues using a long-lived cyclometallated Npyridyl^Cphenyl^Npyridyl Pt(ii) complex." RSC Adv. 4, no. 66 (2014): 35003–8. http://dx.doi.org/10.1039/c4ra04489d.

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22

Narazaki, Ayako, Keizo Nishikawa, Toshitada Yoshihara, et al. "Quantification of oxygen tension in bone marrow using intravital two-photon phosphorescence lifetime imaging." Proceedings for Annual Meeting of The Japanese Pharmacological Society 92 (2019): 1—P—129. http://dx.doi.org/10.1254/jpssuppl.92.0_1-p-129.

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23

Wilson, David F., Sergei A. Vinogradov, Pavel Grosul, M. Noel Vaccarezza, Akiko Kuroki, and Jean Bennett. "Oxygen distribution and vascular injury in the mouse eye measured by phosphorescence-lifetime imaging." Applied Optics 44, no. 25 (2005): 5239. http://dx.doi.org/10.1364/ao.44.005239.

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24

Liu, Chang, Amanda Chisholm, Buyin Fu, et al. "Quantitation of cerebral oxygen tension using phasor analysis and phosphorescence lifetime imaging microscopy (PLIM)." Biomedical Optics Express 12, no. 7 (2021): 4192. http://dx.doi.org/10.1364/boe.428873.

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25

Choi, Heejin, Dimitrios S. Tzeranis, Jae Won Cha, et al. "3D-resolved fluorescence and phosphorescence lifetime imaging using temporal focusing wide-field two-photon excitation." Optics Express 20, no. 24 (2012): 26219. http://dx.doi.org/10.1364/oe.20.026219.

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26

Dmitriev, Ruslan I., James Jenkins, Irina A. Okkelman, and Dmitri B. Papkovsky. "High-Resolution Analysis of Molecular Oxygen in Mammalian Cell Models by Phosphorescence Lifetime Imaging Microscopy." Biophysical Journal 110, no. 3 (2016): 518a—519a. http://dx.doi.org/10.1016/j.bpj.2015.11.2772.

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27

Zhang, Huajie, Jiayang Jiang, Pengli Gao, et al. "Dual-Emissive Phosphorescent Polymer Probe for Accurate Temperature Sensing in Living Cells and Zebrafish Using Ratiometric and Phosphorescence Lifetime Imaging Microscopy." ACS Applied Materials & Interfaces 10, no. 21 (2018): 17542–50. http://dx.doi.org/10.1021/acsami.8b01565.

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28

Solomatina, Anastasia I., Shih-Hao Su, Maria M. Lukina, et al. "Water-soluble cyclometalated platinum(ii) and iridium(iii) complexes: synthesis, tuning of the photophysical properties, and in vitro and in vivo phosphorescence lifetime imaging." RSC Advances 8, no. 31 (2018): 17224–36. http://dx.doi.org/10.1039/c8ra02742k.

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29

Yang, Jie, Heqi Gao, Yunsheng Wang, et al. "The odd–even effect of alkyl chain in organic room temperature phosphorescence luminogens and the corresponding in vivo imaging." Materials Chemistry Frontiers 3, no. 7 (2019): 1391–97. http://dx.doi.org/10.1039/c9qm00108e.

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Six alkyl substituted phenothiazine 5,5-dioxide derivatives, containing groups from methyl to hexyl groups, were synthesized, and demonstrated an apparent odd–even effect in RTP lifetime never observed before.
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30

YONEYA, Kazuhiro, Kyoko YAMAZAKI, Hiroyuki TAKUWA, et al. "7D35 High speed imaging of oxygen dynamics in rodent cerebral cortex by using phosphorescence lifetime method." Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME 2012.24 (2012): _7D35–1_—_7D35–2_. http://dx.doi.org/10.1299/jsmebio.2012.24._7d35-1_.

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31

Liu, Yawei, Yuyang Gu, Wei Yuan, et al. "Quantitative Mapping of Liver Hypoxia in Living Mice Using Time‐Resolved Wide‐Field Phosphorescence Lifetime Imaging." Advanced Science 7, no. 11 (2020): 1902929. http://dx.doi.org/10.1002/advs.201902929.

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32

Yang, Jing, Qian Cao, Hang Zhang, et al. "Targeted reversal and phosphorescence lifetime imaging of cancer cell metabolism via a theranostic rhenium(I)-DCA conjugate." Biomaterials 176 (September 2018): 94–105. http://dx.doi.org/10.1016/j.biomaterials.2018.05.040.

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33

Li, Wei, Shuangshuang Wu, Xiaokai Xu, et al. "Carbon Dot-Silica Nanoparticle Composites for Ultralong Lifetime Phosphorescence Imaging in Tissue and Cells at Room Temperature." Chemistry of Materials 31, no. 23 (2019): 9887–94. http://dx.doi.org/10.1021/acs.chemmater.9b04120.

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34

Kalinina, Sviatlana, Alexander Jelzow, Tobias Plötzing, and Angelika Rück. "Fast repetition rate fs pulsed lasers for advanced PLIM microscopy." Journal of Innovative Optical Health Sciences 12, no. 05 (2019): 1940004. http://dx.doi.org/10.1142/s1793545819400042.

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Simultaneous metabolic and oxygen imaging is promising to follow up therapy response, disease development and to determine prognostic factors. FLIM of metabolic coenzymes is now widely accepted to be the most reliable method to determine cellular bioenergetics. Also, oxygen consumption has to be taken into account to understand treatment responses. The phosphorescence lifetime of oxygen sensors is able to indicate local oxygen changes. For phosphorescence lifetime imaging (PLIM) dyes based on ruthenium (II) coordination complexes are useful, in detail TLD1433 which possesses a variety of diffe
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35

Mathew, Alexander S., Christopher A. DeRosa, James N. Demas та Cassandra L. Fraser. "Difluoroboron β-diketonate materials with long-lived phosphorescence enable lifetime based oxygen imaging with a portable cost effective camera". Analytical Methods 8, № 15 (2016): 3109–14. http://dx.doi.org/10.1039/c5ay02959g.

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36

Gunay, Gokhan, and Isa Yildirim. "A fast regularized least-squares method for retinal vascular oxygen tension estimation using a phosphorescence lifetime imaging model." BioMedical Engineering OnLine 12, no. 1 (2013): 106. http://dx.doi.org/10.1186/1475-925x-12-106.

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37

Zhao, Yihua, Liwei Liu, Teng Luo, et al. "A platinum-porphine/poly(perfluoroether) film oxygen tension sensor for noninvasive local monitoring of cellular oxygen metabolism using phosphorescence lifetime imaging." Sensors and Actuators B: Chemical 269 (September 2018): 88–95. http://dx.doi.org/10.1016/j.snb.2018.04.154.

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38

Yaseen, Mohammad A., Vivek J. Srinivasan, Sava Sakadžić, et al. "Microvascular Oxygen Tension and Flow Measurements in Rodent Cerebral Cortex during Baseline Conditions and Functional Activation." Journal of Cerebral Blood Flow & Metabolism 31, no. 4 (2010): 1051–63. http://dx.doi.org/10.1038/jcbfm.2010.227.

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Measuring cerebral oxygen delivery and metabolism microscopically is important for interpreting macroscopic functional magnetic resonance imaging (fMRI) data and identifying pathological changes associated with stroke, Alzheimer's disease, and brain injury. Here, we present simultaneous, microscopic measurements of cerebral blood flow (CBF) and oxygen partial pressure (pO2) in cortical microvessels of anesthetized rats under baseline conditions and during somatosensory stimulation. Using a custom-built imaging system, we measured CBF with Fourier-domain optical coherence tomography (OCT), and
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39

Xiao, Guowei, Bo Zhou, Xiaoyu Fang, and Dongpeng Yan. "Room-Temperature Phosphorescent Organic-Doped Inorganic Frameworks Showing Wide-Range and Multicolor Long-Persistent Luminescence." Research 2021 (April 9, 2021): 1–11. http://dx.doi.org/10.34133/2021/9862327.

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Long-persistent luminescence based on purely inorganic and/or organic compounds has recently attracted much attention in a wide variety of fields including illumination, biological imaging, and information safety. However, simultaneously tuning the static and dynamic afterglow performance still presents a challenge. In this work, we put forward a new route of organic-doped inorganic framework to achieve wide-range and multicolor ultralong room-temperature phosphorescence (RTP). Through a facile hydrothermal method, phosphor (tetrafluoroterephthalic acid (TFTPA)) into the CdCO3 (or Zn2(OH)2CO3)
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40

Zhao, Qiang, Xiaobo Zhou, Tianye Cao, et al. "Fluorescent/phosphorescent dual-emissive conjugated polymer dots for hypoxia bioimaging." Chemical Science 6, no. 3 (2015): 1825–31. http://dx.doi.org/10.1039/c4sc03062a.

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41

Chen, Zejing, Xiangchun Meng, Mingjuan Xie, et al. "A self-calibrating phosphorescent polymeric probe for measuring pH fluctuations in subcellular organelles and the zebrafish digestive tract." Journal of Materials Chemistry C 8, no. 7 (2020): 2265–71. http://dx.doi.org/10.1039/c9tc06285h.

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42

Wilson, D. F., A. Pastuszko, J. E. DiGiacomo, M. Pawlowski, R. Schneiderman, and M. Delivoria-Papadopoulos. "Effect of hyperventilation on oxygenation of the brain cortex of newborn piglets." Journal of Applied Physiology 70, no. 6 (1991): 2691–96. http://dx.doi.org/10.1152/jappl.1991.70.6.2691.

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A new phosphorescence imaging method (Rumsey et al. Science Wash. DC 241: 1649-1651, 1988) has been used to continuously monitor the PO2 in the blood of the cerebral cortex of newborn pigs. A window was prepared in the skull and the brain superfused with artificial cerebrospinal fluid. The phosphorescent probe for PO2, Pd-meso-tetra(4-carboxyphenyl)porphine, was injected directly into the systemic blood. The phosphorescence of the probe was imaged, and the lifetimes were measured using flash illumination and a gated video camera. The PO2 in the blood of the veins and capillary beds of the cort
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43

Zhang, Kenneth Yin, Jie Zhang, Yahong Liu, et al. "Core–shell structured phosphorescent nanoparticles for detection of exogenous and endogenous hypochlorite in live cells via ratiometric imaging and photoluminescence lifetime imaging microscopy." Chemical Science 6, no. 1 (2015): 301–7. http://dx.doi.org/10.1039/c4sc02600d.

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44

Ma, Yun, Hua Liang, Yi Zeng, et al. "Phosphorescent soft salt for ratiometric and lifetime imaging of intracellular pH variations." Chemical Science 7, no. 5 (2016): 3338–46. http://dx.doi.org/10.1039/c5sc04624f.

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45

Jenkins, James. "Local O2 Gradients in Porous 3D Scaffold Monitored by Phosphorescent Lifetime Imaging Microscopy." Biophysical Journal 108, no. 2 (2015): 484a. http://dx.doi.org/10.1016/j.bpj.2014.11.2648.

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46

Shi, Huifang, Huibin Sun, Huiran Yang, et al. "Polyfluorenes with Phosphorescent Iridium(III) Complexes for Time-Resolved Luminescent Biosensing and Fluorescence Lifetime Imaging." Advanced Functional Materials 26, no. 36 (2016): 6505. http://dx.doi.org/10.1002/adfm.201603015.

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47

Li, Yang, Bo Ma, Yugui Long, et al. "Aggregation-induced phosphorescent emission-active Ir(iii) complexes with a long lifetime for specific mitochondrial imaging and tracking." Journal of Materials Chemistry C 8, no. 7 (2020): 2467–74. http://dx.doi.org/10.1039/c9tc05724b.

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48

Shi, Huifang, Huibin Sun, Huiran Yang, et al. "Cationic Polyfluorenes with Phosphorescent Iridium(III) Complexes for Time-Resolved Luminescent Biosensing and Fluorescence Lifetime Imaging." Advanced Functional Materials 23, no. 26 (2013): 3268–76. http://dx.doi.org/10.1002/adfm.201202385.

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49

Huntosova, Veronika, Denis Horvath, Robert Seliga, and Georges Wagnieres. "Influence of Oxidative Stress on Time-Resolved Oxygen Detection by [Ru(Phen)3]2+ In Vivo and In Vitro." Molecules 26, no. 2 (2021): 485. http://dx.doi.org/10.3390/molecules26020485.

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Detection of tissue and cell oxygenation is of high importance in fundamental biological and in many medical applications, particularly for monitoring dysfunction in the early stages of cancer. Measurements of the luminescence lifetimes of molecular probes offer a very promising and non-invasive approach to estimate tissue and cell oxygenation in vivo and in vitro. We optimized the evaluation of oxygen detection in vivo by [Ru(Phen)3]2+ in the chicken embryo chorioallantoic membrane model. Its luminescence lifetimes measured in the CAM were analyzed through hierarchical clustering. The detecti
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50

Zhang, Dong-Yang, Yue Zheng, Hang Zhang, et al. "Delivery of Phosphorescent Anticancer Iridium(III) Complexes by Polydopamine Nanoparticles for Targeted Combined Photothermal-Chemotherapy and Thermal/Photoacoustic/Lifetime Imaging." Advanced Science 5, no. 10 (2018): 1800581. http://dx.doi.org/10.1002/advs.201800581.

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