Journal Article

PUBDB-2024-05373

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The structure of ice under confinement in periodic mesoporous organosilicas (PMOs)

Giesselmann, N. C. (Corresponding author)DESY* ; Lenz, P.Extern* ; Meinert, S.-M. ; Simon, T.Extern* ; Bauer, R.Extern*DESY* ; Jo, W.XFEL.EU*DESY* ; Claas, S. ; Koehn, C.Extern* ; Striker, N.DESY* ; Fröba, M. (Corresponding author) ; Lehmkühler, F. (Corresponding author)XFEL.EU*DESY*

2024
American Institute of Physics Melville, NY

This record in other databases:        

Please use a persistent id in citations: doi:10.1063/5.0216697  doi:10.3204/PUBDB-2024-05373

Abstract: We investigated the structure of ice under nanoporous confinement in periodic mesoporous organosilicas (PMOs) with different organic functionalities and pore diameters between 3.4 and 4.9 nm. X-ray scattering measurements of the system were performed at temperatures between 290 and 150 K. We report the emergence of ice I with both hexagonal and cubic characteristics in different porous materials, as well as an alteration of the lattice parameters when compared to bulk ice. This effect is dependent on the pore diameter and the surface chemistry of the respective PMO. Investigations regarding the orientation of hexagonal ice crystals relative to the pore wall using x-ray cross correlation analysis reveal one or more discrete preferred orientation in most of the samples. For a pore diameter of around 3.8 nm, stronger correlation peaks are present in more hydrophilically functionalized pores and seem to be connected to stronger shifts in the lattice parameters.

---

Contributing Institute(s):

1. Helmholtz-Zentrum Hereon (Hereon)
2. Spectroscopy of molecular processes (FS-SMP)
3. MID (XFEL_E1_MID)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. FS-Proposal: I-20200440 (I-20200440) (I-20200440)
4. FS-Proposal: I-20190201 (I-20190201) (I-20190201)
5. FS-Proposal: I-20220503 (I-20220503) (I-20220503)
6. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. PETRA Beamline P03 (PETRA III)
2. PETRA Beamline P02.1 (PETRA III)

Appears in the scientific report 2024

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---