4 4 dichlorodiphenylsulfone dcdps

PSF was synthesized using 2,2-bis(4-hydroxyphenyl)propane (Bisphenol A, 97%), N,N-dimethylacetamide (DMAc, η = 0.92 mPa·s (25 °C), chemically pure), and N-methyl-2-pyrollidone (NMP, η = 1.66 mPa·s (25 °C), chemically pure) provided by Acros Organics (Geel, Belgium); 4,4′-dichlorodiphenylsulfone (DCDPS, 99%) was purchased from Alfa Aesar (Heysham, UK), potassium carbonate (chemically pure) and dimethyl sulfoxide (DMSO, η = 2.00 mPa·s (25 °C), chemically pure) were purchased from Reachem (Moscow, Russia).
To prepare the dope solutions, NMP was used as a solvent and polyethylene glycol with an average molecular weight of 400 g/mol (PEG-400, Acros Organics (Geel, Belgium)) as a pore-forming additive.

Triptycene-1,4-diol (TRP) (Wiegand et al., 2014 (link)) and pentiptycene-6,13-diol (PENT) (Luo et al., 2015 (link)) were synthesized according to previous literature. Anthracene, sodium hydrosulfite, 4,4′-dichlorodiphenylsulfone (DCDPS), and 4,4′-difluorodiphenylsulfone (DFDPS) were purchased from Alfa Aesar and used as received. 1,4-benzoquinone, tetrachloro-1,4-benzoquinone, potassium carbonate (K₂CO₃), sodium bicarbonate, acetic acid, methanol, and 2-propanol were purchased from Sigma-Aldrich. 4,4′-biphenol (BP) and 3,3′-disulfonated-4,4′-dichlorodiphenylsulfone (SDCDPS) were purchased from Akron Polymer Systems and dried in vacuum at 110°C for 24 h before use. Anhydrous N, N-dimethylacetamide (DMAc), toluene, and hydrogen peroxide (30 wt% solution) were purchased from EMD Millipore and used as received.