scholarly journals Recent developments in solid-state NMR spectroscopy of crystalline microporous materials

2014 ◽  
Vol 16 (18) ◽  
pp. 8223-8242 ◽  
Author(s):  
Sharon E. Ashbrook ◽  
Daniel M. Dawson ◽  
Valerie R. Seymour
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Microporous Materials ◽  
Solid State Nmr Spectroscopy ◽  
Framework Materials ◽  
Recent Developments ◽  
Structure Disorder

This Perspective describes how solid-state NMR spectroscopy can be used to investigate the structure, disorder, dynamics and reactivity of crystalline microporous framework materials.

Recent Advances of Solid‐State NMR Spectroscopy for Microporous Materials

2020 ◽  
Vol 32 (44) ◽  
pp. 2002879
Author(s):  
Shenhui Li ◽  
Olivier Lafon ◽  
Weiyu Wang ◽  
Qiang Wang ◽  
Xingxing Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Microporous Materials ◽  
Solid State Nmr Spectroscopy ◽  
Recent Advances

Determination Of Aluminum Coordination Environments In Amorphous AI2O3 By Solid State Nmr Spectroscopy

1993 ◽  
Vol 321 ◽  
Author(s):  
William S. Rees ◽  
Lamy J. Chopin
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Microstructural Development ◽  
Coordination Environment ◽  
Solid State Nmr Spectroscopy ◽  
Recent Developments ◽  
Nmr Techniques

ABSTRACTIt previously has been difficult to probe the localized coordination environment of aluminum atoms in amorphous alumina samples by solid state NMR spectroscopy. Such an in situ technique has benefits in probing the structure of the material and monitoring the evolution of the microstructural development during thermal processing. The recent developments of more sophisticated NMR techniques by Pines, et al., specifically devised for treatment of problems unique to the solid state spectroscopy of quadrupolar nuclei, have permitted a glimpse into these Materials. As a result of applying these experimental techniques to new materials systems, a better understanding of the solid state structure of amorphous aluminas derived from polymer pyrolysis has emerged. Correlations between the onset and completion of crystallization and the localized structure may now be possible.

scholarly journals A New Methodological Approach to Correlate Protective and Microscopic Properties by Soft X-ray Microscopy and Solid State NMR Spectroscopy: The Case of Cusa’s Stone

2021 ◽  
Vol 11 (13) ◽  
pp. 5767
Author(s):  
Veronica Ciaramitaro ◽  
Alberto Spinella ◽  
Francesco Armetta ◽  
Roberto Scaffaro ◽  
Emmanuel Fortunato Gulino ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Methodological Approach ◽  
Polymer Chains ◽  
General Question ◽  
Protective Agent ◽  
Vapour Permeability ◽  
X Ray ◽  
Solid State Nmr Spectroscopy

Hydrophobic treatment is one of the most important interventions usually carried out for the conservation of stone artefacts and monuments. The study here reported aims to answer a general question about how two polymers confer different protective performance. Two fluorinated-based polymer formulates applied on samples of Cusa’s stone confer a different level of water repellence and water vapour permeability. The observed protection action is here explained on the basis of chemico-physical interactions. The distribution of the polymer in the pore network was investigated using scanning electron microscopy and X-ray microscopy. The interactions between the stone substrate and the protective agents were investigated by means of solid state NMR spectroscopy. The ss-NMR findings reveal no significant changes in the chemical neighbourhood of the observed nuclei of each protective agent when applied onto the stone surface and provide information on the changes in the organization and dynamics of the studied systems, as well as on the mobility of polymer chains. This allowed us to explain the different macroscopic behaviours provided by each protective agent to the stone substrate.

Dynamic Motion of Organic Spacer Cations in Ruddlesden–Popper Lead Iodide Perovskites Probed by Solid-State NMR Spectroscopy

2021 ◽  
Vol 33 (2) ◽  
pp. 642-656
Author(s):  
Clayton J. Dahlman ◽  
Rhys M. Kennard ◽  
Piotr Paluch ◽  
Naveen R. Venkatesan ◽  
Michael L. Chabinyc ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Lead Iodide ◽  
Solid State Nmr Spectroscopy ◽  
Dynamic Motion
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