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Effects of salt and gel network structures on purple membrane stacking in hydrogels immobilized with poly(vinyl alcohol)

Authors :
Yasunori Yokoyama
Hiroshi Takahashi
Masashi Sonoyama
Shunsuke Yano
Hikaru Tanaka
Takashi Kikukawa
Riku Kurita
Koshi Takenaka
Morise Karasawa
Source :
Journal of Applied Physics. 129:014701
Publication Year :
2021
Publisher :
AIP Publishing, 2021.

Abstract

The effects of a gel network structure on purple membrane (PM) spontaneous stacking are discussed, with particular emphasis on the relationship between the PM periodic pre-structures before gelation. Such peculiar intermembrane pre-structures with a periodic distance of ∼20 nm have recently been found to provide an important key to PM stacking, which is critical for the engineering applications of PM. Here, we investigated how the PM stacking differs depending on the gel network of a poly(vinyl alcohol) gel. On the basis of the results, we propose a plausible interplay between the PM periodic pre-structures and the type of gel network for PM stacking. The results indicate that a porous gel network, in addition to the PM periodic pre-structure in solutions, is necessary for PM stacking in immobilized gel samples.

Details

ISSN :
10897550 and 00218979
Volume :
129
Database :
OpenAIRE
Journal :
Journal of Applied Physics
Accession number :
edsair.doi...........e26d494324497b09c328581f23849694
Full Text :
https://doi.org/10.1063/5.0032546