Jump to main content
Jump to site search

Issue 3, 2017
Previous Article Next Article

Zeolite molecular accessibility and host–guest interactions studied by adsorption of organic probes of tunable size

Author affiliations

Abstract

A series of fluorescent probe molecules based on the commercially available trans-4-(4-(diethylamino)styryl)-N-methylpyridinium iodide (DAMPI) scaffold has been developed. The dynamic radii of these DAMPI-type probes covered a range of 5.8 to 10.1 Å and could be changed by varying the alkyl substituents on the amine donor group, with limited effect on the electronic properties. These probe molecules allow for the direct evaluation of the molecular accessibility into confined spaces, more specifically the micropore architecture of zeolite materials. Evaluation of industrially relevant zeolite materials with 8- (CHA), 10- (MFI) and 12-membered ring pores (FAU) showed that steric bulk influences the rate of adsorption, the amount of probe molecule taken up by the zeolite as well as the interaction of the probe molecule with the zeolite material. Furthermore, a positive linear correlation is found between the pore–probe size difference and total probe uptake by the zeolite. The absorption spectra of each probe molecule within the zeolites show that this DAMPI-type compound is chemically bound to the zeolite's acid sites. The new approach shows the general principle of determining size-accessibility relationships in microporous solids with a series of fluorescent probes of systematically tunable size.

Graphical abstract: Zeolite molecular accessibility and host–guest interactions studied by adsorption of organic probes of tunable size

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 Nov 2016, accepted on 14 Dec 2016 and first published on 21 Dec 2016


Article type: Paper
DOI: 10.1039/C6CP07572J
Citation: Phys. Chem. Chem. Phys., 2017,19, 1857-1867
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Zeolite molecular accessibility and host–guest interactions studied by adsorption of organic probes of tunable size

    F. C. Hendriks, D. Valencia, P. C. A. Bruijnincx and B. M. Weckhuysen, Phys. Chem. Chem. Phys., 2017, 19, 1857
    DOI: 10.1039/C6CP07572J

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements