Confinement of nematic liquid crystals in SBA mesoporous materials
- This work presents some results obtained by confining octylcyanobiphenyl (8CB) to the pores of two SBA-15 type host materials: a silica SBA-15 (pores of 10.2 nm) and an aluminum containing AlSBA-15 (pores of 7.5 nm). The LC molecules were loaded inside the pores from a solution in acetone, in a percentage higher than 70% from the maximum possible loading. It was observed that the 8CB molecules confined to molecular sieves may preserve the phase transitions characteristic for the bulk LC provided that the confining pores are sufficiently large, as offered by SBA materials. However, present guest-host interactions play an important role in these phase transitions. Such a behavior is at variance with the 8CB confined to Controlled Porous Glass with the same pore dimensions, for which the bulk-like phase transitions can be always observed.
Autor*innen: | Andreas SchönhalsORCiD, Ligia Frunza, Stefan Frunza, U. Bentrup, R. Fricke, I. Pitsch, H. Kosslick |
---|---|
Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Eigenverlag BAM |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Studies in surface science and catalysis |
Jahr der Erstveröffentlichung: | 2002 |
Verlag: | Elsevier |
Verlagsort: | Amsterdam |
Jahrgang/Band: | 142 |
Ausgabe/Heft: | 2 |
Erste Seite: | 1323 |
Letzte Seite: | 1329 |
Veranstaltung: | 2nd International FEZA conference |
Veranstaltungsort: | Taormina, Italy |
Beginndatum der Veranstaltung: | 2002-09-01 |
Enddatum der Veranstaltung: | 2002-09-05 |
DOI: | 10.1016/S0167-2991(02)80296-8 |
ISSN: | 0167-2991 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |