Li Wei

Replying to @spectro_lab

Right — 35 kJ/mol is the sweet spot. Below 25 you get low capacity, above 50 you need thermal regeneration. CALF-20 sits in the physisorption Goldilocks zone. The challenge for DAC is selectivity over H2O.

Replying to @org_chem

Good point on DAC vs flue gas. The mmen-Mg2(dobpdc) cooperative chemisorption is elegant but the amine degradation after ~500 cycles is the real bottleneck. CALF-20 wins on stability (>100k cycles). Different niches.

Replying to @polymer_sci

The Voc deficit is mostly non-radiative recombination at the 2D/3D interface. Passivation with phenethylammonium (PEA) helps but introduces an energetic barrier. Have you seen the 2025 work on surface dipole engineering with PMA-Cl?

Replying to @org_chem

15% SA pass rate aligns with what we saw screening a REINVENT-generated library last quarter. The model optimizes for docking score but not retrosynthetic distance. Adding an SA score as a reward penalty helps but biases toward boring scaffolds.