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@ARTICLE{UnniramParambil:622022,
author = {Unniram Parambil, Ajmal Roshan and Pokratath, Rohan and
Parammal, Muhammed Jibin and Dhaene, Evert and Van den
Eynden, Dietger and Balog, Sandor and Prescimone, Alessandro
and Infante, Ivan and Shahgaldian, Patrick and De Roo,
Jonathan},
title = {{A}tomically precise surface chemistry of zirconium and
hafnium metal oxo clusters beyond carboxylate ligands},
journal = {Chemical science},
volume = {15},
number = {42},
issn = {2041-6520},
address = {Cambridge},
publisher = {RSC},
reportid = {PUBDB-2025-00134},
pages = {17380-17396},
year = {2024},
abstract = {The effectiveness of nanocrystals in many applications
depends on their surface chemistry. Here, we leverage the
atomically precise nature of zirconium and hafnium oxo
clusters to gain fundamental insight into the thermodynamics
of ligand binding. Through a combination of theoretical
calculations and experimental spectroscopic techniques, we
determine the interaction between the M6O88+ (M = Zr, Hf)
cluster surface and various ligands: carboxylates,
phosphonates, dialkylphosphinates, and monosubstituted
phosphinates. We refute the common assumption that the
adsorption energy of an adsorbate remains unaffected by the
surrounding adsorbates. For example, dialkylphosphinic acids
are too sterically hindered to yield complete ligand
exchange, even though a single dialkylphosphinate has a high
binding affinity. Monoalkyl or monoaryl phosphinic acids do
replace carboxylates quantitatively and we obtained the
crystal structure of M6O8H4(O2P(H)Ph)12 (M = Zr, Hf), giving
insight into the binding mode of monosubstituted
phosphinates. Phosphonic acids cause a partial structural
reorganization of the metal oxo cluster into amorphous metal
phosphonate as indicated by pair distribution function
analysis. These results rationalize the absence of
phosphonate-capped M6O8 clusters and the challenge in
preparing Zr phosphonate metal–organic frameworks. We thus
further reinforce the notion that monoalkylphosphinates are
carboxylate mimics with superior binding affinity.},
cin = {FS DOOR-User},
ddc = {540},
cid = {$I:(DE-H253)FS_DOOR-User-20241023$},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / UNICORN - Hybrid
Nanocomposite Scintillators for Transformational
Breakthroughs in Radiation Detection and Neutrino Research
(101098649) / FS-Proposal: I-20231114 EC (I-20231114-EC)},
pid = {G:(DE-HGF)POF4-6G3 / G:(EU-Grant)101098649 /
G:(DE-H253)I-20231114-EC},
experiment = {EXP:(DE-H253)P-P21.1-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:39386907},
UT = {WOS:001327118800001},
doi = {10.1039/D4SC03859B},
url = {https://bib-pubdb1.desy.de/record/622022},
}