Improving MOF stability: approaches and applications

Abstract

This review summarizes recent advances in the design and synthesis of stable MOFs and highlights the relationships between the stability and functional applications.

Metal‐Organic Frameworks and Metal‐Organic Cages – A Perspective

“…[84] Considerable effort has been made to address the question of MOF stability and some MOFs have been developed which demonstrate excellent stability under a variety of conditions. [85] A notable family of MOFs that exhibit excellent stability are those based on Zr-carboxylates. Indeed, UiO-66, the parent MOF built from Zr(IV) cations and terephthalate linkers [86] and related ligands has been shown to exhibit stability across a large pH range [87] notably under acidic conditions but also, in certain cases, in basic environments.…”

Metal−Organic Frameworks toward Electrochemical Sensors: Challenges and Opportunities

“…Besides the intrinsically stable MOFs, post‐synthetic modification (PSM) can also be utilized to improve the stability of MOFs under harsh conditions . Overall speaking, even though the chemical stability of several commonly reported MOFs in water with a variety of pH values has been intensely studied , knowledge regarding the chemical stability of most MOFs during electrochemical operations in the presence of different commonly used counter ions, such as phosphate, acetate, and carbonate, is still very limited in literature so far. It is thus suggested that after utilizing the pristine MOF‐based modified electrode for electroanalytical purposes, ex‐situ characterizations of the modified material should always be performed to examine the crystallinity and surface properties of the MOF.…”

A self‐penetrating and chemically stable zinc (ii)‐organic framework as multi‐responsive chemo‐sensor to detect pesticide and antibiotics in water

“…Nevertheless, there are samples that suggest that the use of bent or flexible organic linkers engender a higher probability of self‐penetration in MOFs. [ 38 ] In view of these above mentioned facts, a flexible bridging linker of 1,3‐bis (imidazol‐1‐ylmethyl)benzene (bimb, Figure S1, in the ESI † ) was selected to react with ZnCl 2 and π ‐conjugated aromatic p ‐terphenyl‐2,2”,5”,5”‘‐tetracarboxylate acid (H 4 tptc), an unprecedented ternary self‐penetrated framework, {[Zn (tptc) 0.5 (bimb)]·H 2 O} n ( NUC‐6 ), was constructed here, with a 3D (4,4)‐connected {8 6 } net. The high chemical stability and excellent luminescent property make the NUC‐6 possible to act as an efficient multi‐response chemo‐sensor in detecting dichloronitroaniline pesticide and nitrofuran antibiotics in water.…”