Docking Strategy to Construct Thermostable, Single-crystalline, Hydrogen-bonded Organic Framework with Large Surface Area.




Enhancement of thermal and chemical durability and an increase of surface area are two main directions for the construction and improvement of the performance of porous hydrogen-bonded organic frameworks (HOFs). Herein, we propose that a hexaazatriphenylene (HAT) derivative, which possesses six carboxyaryl groups, is a suitable building block for the systematic construction of thermally and chemically durable HOFs with large surface area due to shape-fitted docking between the HAT cores and interpenetrated three-dimensional network. We demonstrate that a HAT derivative with carboxybiphenyl groups (CBPHAT) forms a stable single-crystalline porous HOF (CBPHAT-1a) that possesses protic solvent durability, even for concentrated HCl, heat resistance up to 305 °C, and a high Brunauer-Emmett-Teller surface area [SA(BET)] of 1288 m2 g-1. A single crystal of CBPHAT-1a has anisotropic fluorescence, which suggests that it would be applicable to polarized emitters based on robust functional porous materials.
PMID: 29885200 [PubMed - as supplied by publisher]
PMID: 29885200 [PubMed - as supplied by publisher]
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