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. 2022 Jun 15;380(5):30. doi: 10.1007/s41061-022-00384-8

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 11 — Phosphorescence lifetime imaging of A [Os(bpy)₂(pic-R8)]¹⁰⁺ (70 μM/24 h) and B [Ru(bpy)₂(pic-R8)]¹⁰⁺ (350 μΜ/15 min) in live SP2 cells. The false colour images and intensity mapping highlight the differences in emission lifetime of the luminophore depending on its localisation in the cell. The emission lifetime of the osmium(II) conjugate was 14.5 ± 0.5 ns in the cytoplasm and 18.8 ± 0.6 ns at the cell membrane. Reproduced from Ref. [131] with permission from the Royal Society of Chemistry