S 1700

Turbidimetry experiments were performed on UV/vis spectrophotometer (UV2550 Shimadzu) equipped with a temperature controller (S-1700) at 670 nm wavelength. Purified samples were dissolved in polypropylene tubes for two hours at 60 °C to obtain 1 wt% solutions. The cuvette and the cuvette holder were heated to 50 °C, the sample was quickly transferred to the cuvette and the measurement of the cooling curve was performed from 50 °C to 3 °C at the rate of 1 °C min⁻¹ with 10 s wait time before each transmittance acquisition. The sample was kept at 3 °C for 5 min before proceeding with the heating cycle measurement from 3 to 50 °C under the same conditions as for the cooling cycle. The sample was constantly stirred during the measurement. The cloud point was determined as the inflection point of the transmittance curve.

All chemicals were used as received. ·OH was generated by the Fenton reaction.^{36 (link)1}O₂ was generated from the H₂O₂/MoO₄²⁻ system in alkaline media.^{37 (link)} NO was generated using sodium nitroferricyanide(iii) dehydrate.^{38 (link)} ONOO⁻ was generated from the SIN-1 reagent (Dojindo Molecular Technologies, Japan). ·O₂⁻ was generated using potassium superoxide (KO₂).^{36 (link)} Fluorescence spectra were measured on a JASCO FP-6500 fluorescence spectrophotometer with a 10 nm path length cell (both excitation and emission slit widths, 5.0 nm) at 298 ± 1 K using a temperature controller.^{39 (link)} Absorption spectra were measured on an UV-visible photodiode-array spectrometer (Shimadzu; Multispec-1500) equipped with a temperature controller (S-1700).^{40 (link)} All measurements were performed under aerated conditions. ¹H and ¹³C NMR charts were obtained using a JEOL JNM-ECS400 spectrometer. FAB-MS analysis was performed on a JEOL JMS 700 Mass Spectrometer. Fluorescence quantum yields (Φ_F) were determined with quinine sulfate dihydrate (in 0.1 M HClO₄ solution) as a standard.^{41,42 (link)}