The photoconversion for rheology measurements was performed with the same LED lamp (M405L3c, THORLABS, USA) as the spectral experiments. Light intensity was 468.6 mW·cm−2 in all experiments as measured by an optical power meter (PM100USB, THORLABS, Gemany) with thermal power sensor (S405C, THORLABS, Gemany). The rheological properties of PhoCl-PEG hydrogels measurements were carried out using a HAAKE RheoStress 6000 (Thermo Scientific) at 25°C.
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