DataVXThe Journal of Physical Chemistry LettersPaper
journal article·2022-08-18Open access

Induced Fit and Mobility of Cycloalkanes within Nanometer-Sized Confinements at 5 K

Aisha Ahsan, Luiza Buimaga-Iarinca, Thomas Nijs, Sylwia Nowakowska, Rejaul Sk, S. Fatemeh Mousavi, Mehdi Heydari, Meike Stöhr, Sameena S. Zaman, Cristian Morari, Lutz H. Gade, Thomas A. Jung

The Journal of Physical Chemistry Letters· Volume 13· Issue 32
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Source abstract

Abstract

Host-guest architectures provide ideal systems for investigating site-specific physical and chemical effects. Condensation events in nanometer-sized confinements are particularly interesting for the investigation of intermolecular and molecule-surface interactions. They may be accompanied by conformational adjustments representing induced fit packing patterns. Here, we report that the symmetry of small clusters formed upon condensation, their registry with the substrate, their lateral packing, and their adsorption height are characteristically modified by the packing of cycloalkanes in confinements. While cyclopentane and cycloheptane display cooperativity upon filling of the hosting pores, cyclooctane and to a lesser degree cyclohexane diffusively redistribute to more favored adsorption sites. The dynamic behavior of cyclooctane is surprising at 5 K given the cycloalkane melting point of >0 °C. The site-specific modification of the interaction and behavior of adsorbates in confinements plays a crucial role in many applications of three-dimensional porous materials as gas storage agents or catalysts/biocatalysts.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Surface Chemistry and Catalysis · Metal-Organic Frameworks: Synthesis and Applications · Crystallography and molecular interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland

CETATEA, National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania

Laboratory for X-ray Nanoscience and Technologies, Paul Scherrer Institut (PSI), 5232 Villigen, Switzerland

Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands

Integrated Sciences and Mathematics, Habib University, Block 18, Gulistan-e-Jauhar, University Avenue, Off Shahrah-e-Faisal Road, Karachi 75290, Sindh, Pakistan

Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany

Funding

Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii · Nederlandse Organisatie voor Wetenschappelijk Onderzoek · Commission for Technology and Innovation, Universit?t Basel · Swiss Nanoscience Institute, University of Basel

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