Jump to main content
Jump to site search


Molecular Packing in Two Bicontinuous Ia3d Gyroid Phases of Calamitic Cubic Mesogen BABH(n); Roles in Structural Stability and Reentrant Behavior

Abstract

1,2-Bis(4’-n-alkoxybenzoyl)hydrazine [BABH(n), n is the number of carbon atoms in the alkyl chain] exhibits two different Ia3d cubic phases depending on the chain length (5 <= n <= 13 and 15<= n <= 22). The molecular packing modes, not only of molecular cores but also of alkyl-chains, are investigated through a maximum entropy method (MEM) and an analysis of the chain-length dependence of the body diagonal of the unit cell. The analyses revealed the difference in the molecular packing. The short-chain Ia3d structure of the BABH(n) (5 <= n <= 13) is constructed by single-layered core motifs and bilayers of alkyl-chains, of which the orientation is tilted from the normal to the layer. The long-chain Ia3d structure (15 <= n <= 22) is formed by double-layered core motifs and monolayers of alkyl-chains, of which the orientation is normal to the layer. Based on the molecular packing modes, the reentrant behavior between the two Ia3d phases was clarified. It was revealed that the alkyl-chains of BABH(n) molecules play an important role in the formation and stability of the two Ia3d structures.

Back to tab navigation

Publication details

The article was received on 09 Aug 2019, accepted on 07 Oct 2019 and first published on 07 Oct 2019


Article type: Paper
DOI: 10.1039/C9CP04424H
Phys. Chem. Chem. Phys., 2019, Accepted Manuscript

  •   Request permissions

    Molecular Packing in Two Bicontinuous Ia3d Gyroid Phases of Calamitic Cubic Mesogen BABH(n); Roles in Structural Stability and Reentrant Behavior

    Y. Yamamura, Y. Nakazawa, S. Kutsumizu and K. SAITO, Phys. Chem. Chem. Phys., 2019, Accepted Manuscript , DOI: 10.1039/C9CP04424H

Search articles by author

Spotlight

Advertisements