Abstract
In this study, a soft salt complex based probe has been exploited for measuring oxygen content changes in living cells. The zinc(II) complex [Zn(tpy)2]2+(CH3COO–)2 {tpy = 3‐[(2,2′:6′,2′′‐terpyridin)‐4′‐yl]‐9‐hexyl‐9H‐carbazole} was chosen as the cationic component, and the iridium(III) complex [Ir(tpq)2CN2]–Bu4N+ [tpq = 2‐(thiophen‐2‐yl)quinoline] was selected as the anionic component. The soft salt complex based probe was formed through electrostatic interaction between two oppositely charged complexes. This probe exhibits ratiometric photoluminescence response to different oxygen concentrations with two separated emission bands. Furthermore, the application of this probe in ratiometric and lifetime imaging of oxygen content changes in living cells has been demonstrated.
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