Refractive index of synthesized monomers was performed on a RFM 870 refractometer from Bellingham+Stanley at 20 °C (Farnborough, England). The monomers were analyzed via massspectrometry using an Agilent 5977B MDS system coupled with a gas-chromatography system Agilent 7820A. The GC-system was equipped with an Agilent 19091S-433UI HP-5ms ultra inert column (30 m x 250 µm x 0.25 µm). Temperature gradient was set from 40 °C to 300 °C with constant heat rate of 15 °C/min and a constant flow of 1 mL/min.