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Chapter 6 149
DEMOFs). These results are essential for further studies on elaboration of the related
DEMOFs. For example, one may avoid many complications by means of employing Ru II,II
SBUs (instead of mixed-valence Ru II,III -SBUs) to form respectively Ru II,II -MOF, which could
by subsequently used as a matrix for defects engineering. From the other side, the doping
of Pd 2+ into less “complicated” Cu-BTC (because of more substitution labile Cu 2+
precursors) has open a way to exploit more functionality of the resulting MOFs. What
more challenging is, to strictly exclude any reducing parameters during synthesis and
prepare a Pd 0 free Pd 2+ /Cu 2+ mixed-metal analog of HKUST-1. Due to the specific
palladium features (like ability to split H2, etc.), this mixed-metal Cu/Pd-BTC materials
including the defect engineering should hold huge promises for many applications. For
instance, gas sorption (e.g. hydrogen uptake), conductivity (TCNQ loading on Cu/Pd-BTC
to modify the electron density at the metal sites, TCNQ = tetracyanoquinodimethane),
catalysis (e.g. using Cu/Pd-BTC as catalysts in alcohol oxidation, cross coupling reaction,
etc.) are topics worth being studied. Last but not the least, phase pure mixed-component
MOFs, structural analogs of HKUST-1, incorporating both Zn 2+ and Cu 2+ ions, H3BTC and
5-nitroisophthalic acid defect linker have been obtained as well (See chapter 7.5).
However, MOFs with only quite low concentration of the incorporated Zn 2+ (about 3%)
have been obtained during this initial study. In a long run, such combination of mixedmetal
and defect linker within single-phased framework could also be very attractive for
advanced properties owing to the more factors (“tuning keys”) influencing modification
on the metal sites.