Université de Fribourg

Advances in porous organic polymers for efficient water capture

Byun, Yearin ; Je, Sang Hyun ; Talapaneni, Siddulu Naidu ; Coskun, Ali

In: Chemistry – A European Journal, 2019, vol. 25, no. 44, p. 10262–10283

Desiccant driven dehumidification for maintaining the proper humidity levels and atmospheric water capture with minimum energy penalty are important aspects in heat pumps, refrigeration, gas and liquid purifications, gas sensing, and clean water production for improved human health and comfort. Water adsorption by using nanoporous materials has emerged as a viable alternative to...

Université de Fribourg

Epoxy‐functionalized porous organic polymers via diels‐alder cycloaddition reaction for atmospheric water capture

Byun, Yearin ; Coskun, Ali

In: Angewandte Chemie, 2018, p. -

We report on the synthesis of highly microporous, epoxy-functionalized porous organic polymers (ep-POPs) through one pot, catalyst-free Diels-Alder cycloaddition polymerization. The high oxygen content of ep-POPs offered efficient hydrogen bonding sites for water molecules, thus leading to high water uptake capacities, up to 39.2-42.4%, under a wide temperature range of 5-45oC, covering the...

Université de Fribourg

A Three-Dimensional Porous Organic Semiconductor Based on Fully sp2 -Hybridized Graphitic Polymer

Byun, Yearin ; Xie, Lilia S. ; Fritz, Patrick Walter ; Ashirov, Timur ; Dincă, Mircea ; Coskun, Ali

In: Angewandte Chemie International Edition, 2020, vol. 59, no. 35, p. 15166-15170

Dimensionality plays an important role in the charge transport properties of organic semiconductors. Although three‐dimensional semiconductors, such as Si, are common in inorganic materials, imparting electrical conductivity to covalent three‐ dimensional organic polymers is challenging. Now, the synthesis of a three‐ dimensional π‐conjugated porous organic polymer (3D p‐POP) using...