Dynamics and packing mode of long-chained n-alkane molecules in the nano-channel of MCM-41

Autor:	Masaharu Okazaki, Sambandam Anandan, Kazumi Toriyama
Rok vydání:	2005
Předmět:	Alkane chemistry.chemical_classification Chemistry Stereochemistry Spin–lattice relaxation General Physics and Astronomy chemistry.chemical_element Carbon-13 NMR Spectral line Amorphous solid Crystallography Nano Molecule Physics::Chemical Physics Physical and Theoretical Chemistry Carbon
Zdroj:	Chemical Physics Letters. 401:363-367
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2004.11.077
Popis:	High-resolution solid-state 13C NMR spectra of long-chained n-alkanes included in the nano-channel of MCM-41 have been observed. Each spectrum has two sets of peaks: one from very flexible molecules and the other from molecules with no significant flexibility. These molecules are characterized by carbon spin lattice relaxation times, T1, of 10 s, respectively. This phenomenon is ascribed to phase separation of the alkanes in the nano-channel, i.e., the amorphous and crystalline phases, respectively. The mechanism of this phase separation and the dynamics of these molecules in the nano-channel are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3ad7fbf3f215b13b9335b034ae942e1e https://doi.org/10.1016/j.cplett.2004.11.077 Zobrazit plný text záznamu Full Text from ScienceDirect