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. 2009 Dec 23;107(4):1284–1288. doi: 10.1073/pnas.0912811107

Fig. 1.

Fig. 1.

Absorption and emission of 247. (A) Chemical structure of H2[pz(trans-A 2 B 2)], 247. (B) Absorption spectrum of 247 (black) in CH2Cl2 with S 2 (blue) and S 1 (red) emission spectra normalized to fit the scale. (C) Intracellular S 1 emission of 247 in A549 lung carcinoma cells imaged by confocal microscopy. Cells in serum-containing medium were treated with 25 μM 247 (red) for 18 h and stained for nuclei (DAPI, blue). Contrast has been slightly adjusted to improve the visualization of the differently stained structures. (D) Emission spectra from MDA-MB-231 cells incubated with 247 (black), control MDA-MB-231 cells (blue), and 247 in serum-containing medium (no cells) (red).