Phase Transitions of N-(4-methoxybenzylidene)-4-butylaniline (MBBA) Confined within Mesoporous Silica

Autor: Takehisa Yoshimi, Ayumi Shima, Shoko Hagiwara-Norifusa, Takayuki Sugimoto, Atsushi Nagoe, Hiroki Fujimori
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Crystals, Vol 10, Iss 9, p 792 (2020)
Druh dokumentu: article
ISSN: 2073-4352
DOI: 10.3390/cryst10090792
Popis: We have used differential scanning calorimetry (DSC) to investigate the phase transition of a liquid crystal, N-(4-methoxybenzylidene)-4-butylaniline (MBBA), confined within porous silica materials with one- and three-dimensional pore architectures. Each phase-transition temperature of the confined MBBA linearly decreased with the inverse pore size compared with that of bulk MBBA. However, the degree of temperature shift varied owing to differences in the pore architectures. In addition, when MBBA was confined within one-dimensional pores, the thermal anomaly associated with the phase transition from the nematic phase to the isotropic liquid phase was not observed in the DSC measurements.
Databáze: Directory of Open Access Journals