10.1021/ja312115x.s001
Manuel Tsotsalas
Manuel
Tsotsalas
Pavel Hejcik
Pavel
Hejcik
Kenji Sumida
Kenji
Sumida
Ziya Kalay
Ziya
Kalay
Shuhei Furukawa
Shuhei
Furukawa
Susumu Kitagawa
Susumu
Kitagawa
Impact of Molecular Clustering inside Nanopores on
Desorption Processes
American Chemical Society
2013
Molecular Clustering
PCP
vapor molecules
Desorption ProcessesUnderstanding
impact
desorption rate
gas purge
nanoporous systems
chemical nature
interaction
metastable state
sorption kinetics
desorption process proceeding
guest molecules
2013-03-27 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Impact_of_Molecular_Clustering_inside_Nanopores_on_Desorption_Processes/2430634
Understanding the sorption kinetics
of nanoporous systems is crucial
for the development and design of novel porous materials for practical
applications. Here, using a porous coordination polymer/quartz crystal
microbalance (PCP/QCM) hybrid device, we investigate the desorption
of various vapor molecules featuring different degrees of intermolecular
(hydrogen bonding) or molecule-framework interactions. Our findings
reveal that strong intermolecular interactions lead to the desorption
process proceeding via an unprecedented metastable state, wherein
the guest molecules are clustered within the pores, causing the desorption
rate to be temporarily slowed. The results demonstrate the considerable
impact of the chemical nature of an adsorbate on the kinetics of desorption,
which is also expected to influence the efficiency of certain processes,
such as desorption by gas purge.