Ri 2031 ri detector

¹H- and ¹³C-NMR spectra were recorded at room temperature on the following spectrometers: Bruker Avance III 300 MHz, Bruker Avance III 400 MHz, Bruker Avence III 500 MHz and Bruker Avance III 600 MHz. The data were interpreted in first order spectra. The spectra were recorded in CDCl₃, D₂O or DMSO-d₆ as indicated in each case. Chemical shifts are reported in δ units relative to the solvent residual peak or TMS. High resolution mass spectra (HR-MS) were either recorded on a Bruker ApexQehybrid 9.4 T FT-ICR-MS (ESI+, DART+), a Finnigan LCQ (ESI+) or a JEOL JMS-700 (EI+) mass spectrometer. IR spectra were recorded on a JASCO FT/IR-4100. Substances were applied as solid. The obtained data was processed with the software JASCO Spectra Manager™ II. Quantum yields (φ) were measured by using the comparative method with quinine sulfate in 0.1 N sulfuric acid as a reference (φ = 0.54, the average values of three measurements were calculated for each sample. Gel permeation chromatography (GPC): Number- (M_n) and weight-average (M_w) molecular weights and polydispersities (PDI, M_w/M_n) were determined by GPC versus polystyrene standards. Measurements were carried out at room temperature in CDCl₃ or THF with PSS-SDV columns (8.0 mm × 30.0 mm, 5 μm particles, 10²-, 10³- and 10⁵- Å pore size) on a Jasco PU-2050 GPC unit equipped with a Jasco UV-2075 UV- and a Jasco RI-2031 RI-detector.