Skip to main content
. 2012 May 31;17(6):6605–6624. doi: 10.3390/molecules17066605

Figure 1.

Figure 1

Spectroscopic characteristics of spiropyran-DO3A complexed and non-complexed with Gd(III): Absorption of water and ethanol solutions of spiropyran-DO3A were spectroscopically analyzed (A). Illumination of the solutions leads to a decrease in absorption and a shift of the actinic band in the range between 350 nm and 400 nm. A shift in the peak absorption wavelength of spiropyran-DO3A complexed with Gd(III) ions in ethanol and water could be detected (B). Illumination of spiropyran-DO3A-Gd in water leads to a decreased MC to SP conversion compared with the ethanol solution. Illumination was performed with a current of 18.5 mA, corresponding to 1.754 × 1016 photons·s−1.