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Figure 2

From: Near-Infrared Fluorescent pH Responsive Probe for Targeted Photodynamic Cancer Therapy

Figure 2

Optical properties of I2-IR783-Mpip. (A) Fluorescent spectra of I2-IR783-Mpip in different pH (3.0–12.0) under excitation at λ 850 nm. (B) Solutions of I2-IR783-Mpip in different pH (3.0–12.0). (C) Reversible colour changes of I2-IR783-Mpip in methanol solution. (D) Singlet oxygen generation of I2-IR783-Mpip upon irradiation with 850 nm lamp up to 60 min. (E) Stability tests of I2-IR783-Mpip in cell culture media pH 5.0 (red line) and pH 7.4 (blue line) at 37 °C for up to 7 days.

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