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Transforming HKUST‐1 Metal–Organic Frameworks into Gels – Stimuli‐Responsiveness and Morphology Evolution
Author(s) -
Liao Peisen,
Fang Haobin,
Zhang Jianyong,
Hu Ya,
Chen Liuping,
Su ChengYong
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700048
Subject(s) - chemistry , supramolecular chemistry , molar ratio , morphology (biology) , rheology , colloid , chemical engineering , metal organic framework , nanoparticle , metal , scanning electron microscope , adsorption , ligand (biochemistry) , phase (matter) , nanotechnology , catalysis , organic chemistry , molecule , materials science , composite material , receptor , biochemistry , biology , engineering , genetics
Metal–organic gels assembled from HKUST‐1 nanoparticles have been developed. The HKUST‐1 gels with varying molar ratios of the chemical constituents exhibit diverse multistimuli‐responsive behaviors towards environmental temperature and mechanical stimuli. A reversible phase transition between gel and colloidal suspensions can be achieved for the gel with a metal/ligand molar ratio of 1.2:1. The chemical and morphological structures of the supramolecular gels were investigated through a combination of electron microscopy, X‐ray analysis techniques, and optical spectroscopy. A continuous morphology evolution was confirmed to exist for a gradual decrease of the molar ratio between the metal and the ligand. The changes to the morphological structure also result in different gas adsorption and rheology properties for the HKUST‐1‐based gels.