{"status":"public","abstract":[{"text":"The physicochemical effects of decorating pore walls of high surface area materials with functional groups are not sufficiently understood, despite the use of these materials in a multitude of applications such as catalysis, separations, or drug delivery. In this study, the influence of 3-amino-propyl triethoxysilane (APTES)-modified SBA-15 on the dynamics of deuterated ethylene glycol (EG-d4) is inspected by comparing three systems: EG-d4 in the bulk phase (sample 1), EG-d4 confined in SBA-15 (sample 2), and EG-d4 confined in SBA-15 modified with APTES (sample 3). The phase behavior (i.e., melting, crystallization, glass formation, etc.) of EG-d4 in these three systems is studied by differential scanning calorimetry. Through line shape analysis of the 2H solid-state NMR (2H ssNMR) spectra of the three systems recorded at different temperatures, two signal patterns, (i) a Lorentzian (liquid-like) and (ii) a Pake pattern (solid-like), are identified from which the distribution of activation energies for the dynamic processes is calculated employing a two-phase model. The physicochemical effects of decorating pore walls of high surface area materials with functional groups are not sufficiently understood, despite the use of these materials in a multitude of applications such as catalysis, separations, or drug delivery. In this study, the influence of 3-amino-propyl triethoxysilane (APTES)-modified SBA-15 on the dynamics of deuterated ethylene glycol (EG-d4) is inspected by comparing three systems: EG-d4 in the bulk phase (sample 1), EG-d4 confined in SBA-15 (sample 2), and EG-d4 confined in SBA-15 modified with APTES (sample 3). The phase behavior (i.e., melting, crystallization, glass formation, etc.) of EG-d4 in these three systems is studied by differential scanning calorimetry. Through line shape analysis of the 2H solid-state NMR (2H ssNMR) spectra of the three systems recorded at different temperatures, two signal patterns, (i) a Lorentzian (liquid-like) and (ii) a Pake pattern (solid-like), are identified from which the distribution of activation energies for the dynamic processes is calculated employing a two-phase model.","lang":"eng"}],"publication":"The Journal of Physical Chemistry C","type":"journal_article","language":[{"iso":"eng"}],"extern":"1","user_id":"100715","_id":"63971","intvolume":" 127","page":"19735–19746","citation":{"apa":"Haro Mares, N. B., Brodrecht, M., Wissel, T., Döller, S. C., Rösler, L., Breitzke, H., Hoffmann, M. M., Gutmann, T., & Buntkowsky, G. (2023). Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR. The Journal of Physical Chemistry C, 127(39), 19735–19746. https://doi.org/10.1021/acs.jpcc.3c03671","mla":"Haro Mares, Nadia B., et al. “Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR.” The Journal of Physical Chemistry C, vol. 127, no. 39, American Chemical Society, 2023, pp. 19735–19746, doi:10.1021/acs.jpcc.3c03671.","short":"N.B. Haro Mares, M. Brodrecht, T. Wissel, S.C. Döller, L. Rösler, H. Breitzke, M.M. Hoffmann, T. Gutmann, G. Buntkowsky, The Journal of Physical Chemistry C 127 (2023) 19735–19746.","bibtex":"@article{Haro Mares_Brodrecht_Wissel_Döller_Rösler_Breitzke_Hoffmann_Gutmann_Buntkowsky_2023, title={Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR}, volume={127}, DOI={10.1021/acs.jpcc.3c03671}, number={39}, journal={The Journal of Physical Chemistry C}, publisher={American Chemical Society}, author={Haro Mares, Nadia B. and Brodrecht, Martin and Wissel, Till and Döller, Sonja C. and Rösler, Lorenz and Breitzke, Hergen and Hoffmann, Markus M. and Gutmann, Torsten and Buntkowsky, Gerd}, year={2023}, pages={19735–19746} }","ieee":"N. B. Haro Mares et al., “Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR,” The Journal of Physical Chemistry C, vol. 127, no. 39, pp. 19735–19746, 2023, doi: 10.1021/acs.jpcc.3c03671.","chicago":"Haro Mares, Nadia B., Martin Brodrecht, Till Wissel, Sonja C. Döller, Lorenz Rösler, Hergen Breitzke, Markus M. Hoffmann, Torsten Gutmann, and Gerd Buntkowsky. “Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR.” The Journal of Physical Chemistry C 127, no. 39 (2023): 19735–19746. https://doi.org/10.1021/acs.jpcc.3c03671.","ama":"Haro Mares NB, Brodrecht M, Wissel T, et al. Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR. The Journal of Physical Chemistry C. 2023;127(39):19735–19746. doi:10.1021/acs.jpcc.3c03671"},"year":"2023","issue":"39","publication_identifier":{"issn":["1932-7447"]},"doi":"10.1021/acs.jpcc.3c03671","title":"Influence of APTES-Decorated Mesoporous Silica on the Dynamics of Ethylene Glycol Molecules─Insights from Variable Temperature 2H Solid-State NMR","volume":127,"date_created":"2026-02-07T15:40:57Z","author":[{"full_name":"Haro Mares, Nadia B.","last_name":"Haro Mares","first_name":"Nadia B."},{"last_name":"Brodrecht","full_name":"Brodrecht, Martin","first_name":"Martin"},{"full_name":"Wissel, Till","last_name":"Wissel","first_name":"Till"},{"first_name":"Sonja C.","last_name":"Döller","full_name":"Döller, Sonja C."},{"last_name":"Rösler","full_name":"Rösler, Lorenz","first_name":"Lorenz"},{"last_name":"Breitzke","full_name":"Breitzke, Hergen","first_name":"Hergen"},{"last_name":"Hoffmann","full_name":"Hoffmann, Markus M.","first_name":"Markus M."},{"last_name":"Gutmann","id":"118165","full_name":"Gutmann, Torsten","first_name":"Torsten"},{"first_name":"Gerd","full_name":"Buntkowsky, Gerd","last_name":"Buntkowsky"}],"publisher":"American Chemical Society","date_updated":"2026-02-17T16:17:28Z"}