Halogen‐Bonded Organic Framework (XOF) Based on Iodonium‐Bridged N⋅⋅⋅I⁺⋅⋅⋅N Interactions: A Type of Diphase Periodic Organic Network

Abstract

Abstract Due to the fascinating structures and wide applications, porous materials with open frameworks have attracted more and more attentions. Herein, a novel two‐dimensional (2D) halogen‐bonded organic framework ( XOF–TPPE ) was successfully designed and fabricated by iodonium‐bridged N⋅⋅⋅I + ⋅⋅⋅N interactions between pyridyl groups and I + for the first time. The formation of XOF–TPPE and its linear analogue was monitored by 1 H NMR, UV–Vis, X‐ray photoelectron spectroscopy (XPS), IR, SEM, TEM, HRTEM and selected‐area electron diffraction (SAED). The structural model of XOF–TPPE was established based on powder X‐ray diffraction (PXRD) data and theoretical simulations. Significantly, synchrotron small‐angle X‐ray scattering (SAXS), DLS and UV–Vis spectroscopy experiments suggested that XOF–TPPE still maintains a stable 2D framework structure in solutions. This research opens up a novel avenue for the development of organic frameworks materials, and may bring new promising applications for the field of porous materials.