Spectroscopic and adsorptive studies of a thermally robust pyrazolato-based PCP

Lorenzo Mino, Valentina Colombo, Jenny G. Vitillo, Carlo Lamberti, Silvia Bordiga, Erik Gallo, Pieter Glatzel, Angelo Maspero, Simona Galli

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The pyrazolato-based PCP [Ni 84-OH) 44-OH 2) 24-PBP) 6] (NiPBP, H 2PBP = 4,4′-bis(1H-pyrazol-4-yl) biphenyl), whose 3-D architecture is built upon octametallic hydroxo clusters reciprocally connected by organic spacers, is a very promising candidate for gas adsorption applications, owing to its remarkable thermal stability (up to 400 °C in air) and its high void volume (70%). As such, NiPBP was selected as a proof-of-concept material to demonstrate how an optimized set of solid state techniques can concur to create a comprehensive and coherent picture, relating (average and local) structural features to adsorptive properties. To this aim, the response of NiPBP toward different gases, retrieved by gas adsorption measurements (N 2 at 77 K, in the low pressure region; H 2 at 77 K, in the high pressure region), was explained in terms of local-level details, as emerged by coupling electronic, X-ray (absorption and emission), and variable temperature IR spectroscopy.

Original languageEnglish (US)
Pages (from-to)4012-4019
Number of pages8
JournalDalton Transactions
Volume41
Issue number14
DOIs
StatePublished - Apr 14 2012

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