Facile synthesis of nanoscale high porosity IR-MOFs for low-k dielectrics thin films

Fluorous Metal–Organic Frameworks and Nonporous Coordination Polymers as Low‐κ Dielectrics

“…Recent theoretical and experimental investigations have drawn the attention to nonfluorous and fluorous metal–organic frameworks as low‐κ materials. Fluorous metal–organic frameworks (FMOFs) and fluorous nonporous coordination polymers (FN‐PCPs) are potentially promising alternatives to current low‐κ dielectrics, as they possess a number of desirable traits in one material, namely: i) Controlled and reproducible chemical composition; ii) reproducible crystal structure, which allows controlled and reproducible physicochemical properties, which is not always the case with amorphous materials; iii) low adsorptivity of high‐κ species.…”

“…Despite these appealing premises, only few papers regarding MOFs and N‐PCPs as low‐κ dielectrics have appeared . A first point of reference was set by Zagorodniy et al These authors estimated static dielectric constants as low as 2.0 for a handful of Zn(II)‐carboxylate IRMOFs by applying the semiempirical Clausius–Mossotti approach, which neglected the orientation and distortion contributions to the molecular polarizability, influencing the value of κ at the frequencies at which microelectronic chips operate (10 5 –10 9 Hz).…”

“…By first‐principle DFT calculations, Warmbier et al subsequently showed that the κ values reported in were underestimated by less than 10%. As far as it is known, promising experimental evidence of κ lower than 2.5 is still infrequent, manifested only by: a) the 2.33(±0.05) value of κ reported for ZIF‐8 thin films at 10 5 Hz stored under ambient conditions with estimated ≈60% relative humidity; b) the 2.4 value shown at 10 5 Hz by pellets of [Sr(1,3‐BDC)] (1,3‐H 2 bdc = benzene‐1,3‐dicarboxylic acid); and c) the 1.2 and 2.1 values reported for films of MOF‐3 and MOF‐5 at 2 × 10 6 Hz, respectively . These authors claim that films of MOF‐5 are stable if exposed to water vapors, but they do not report κ measurements performed after exposure to humidity.…”

Synthesis of mixed-ligand Cu–MOFs and their adsorption of malachite green

“…Metal-organic frameworks (MOFs) have drawn increasing attention owing to their high porosity and tunability. 7,8 Research concerning the application of MOFs in wastewater treatment is receiving attention. 9,10 MOF materials have been found to be effective and economical adsorbents for dyes in waste water.…”

A Facile One-Pot Approach to the Synthesis of Gd-Eu Based Metal-Organic Frameworks and Applications to Sensing of Fe3+ and Cr2O72− Ions

“…The shape of these clusters can be assimilated to specific geometric structures, such as triangular ones, tetrahedral or octahedral in periodically organized systems. For example, among the most studied MOFs of transition metals, there are the MOF-5 and IRMOF-5, consisting of Zn 4 O-cluster sub-units with 1,4-benzendicarboxylic acid and Zn 4 O-clusters with 2,6-naphthalendicarboxylic acid [ 17 , 18 , 19 ].…”