Calix[4]arene-Based Porous Organic Nanosheets

• DOI: 10.1021/acsami.8b03800
• Publication Date: 2018-04-24T14:25:43Z
• Authors: Dinesh Shetty; Tina Skorjanc; Jesus Raya; Sudhir Kumar Sharma; Ilma Jahovic; Kyriaki Polychron...; Zouhair Asfari; Dong Suk Han; Sajeewa Dewage; John-Carl Olsen; Ramesh Jagannathan; Serdal Kirmizialtin; Ali Trabolsi
• Keywords: Calixarene

Calixarenes are a common motif in supramolecular chemistry but have rarely been incorporated structurally well-defined covalent 2D materials. Such task is challenging, especially without template, because of the nonplanar configuration and conformational flexibility calixarene ring. Here, we report first-of-a-kind solvothermal synthesis calix[4]arene-based polymer (CX4-NS) that porous, covalent, isolated as few-layer thick (3.52 nm) nanosheets. Experimental theoretical characterization nanosheets presented. Atomic force microscopy transmission electron results consistent with calculated lowest energy state polymer. In state, parallel layers tightly packed, calixarenes adopt 1,2-alternate conformation, which gives rise to two-dimensional pattern rhombic unit cell. We tested material's ability adsorb I2 vapor observed maximum capacity 114 wt %. Molecular simulations extended model capture showed excellent agreement experiments. Furthermore, material was easily regenerated by mild ethanol washings could be reused minimal loss efficiency.