Pressure Dependence of Aggregation State of (DMPC/Cholesterol) Mixed Monolayer Based on AFM Observation

Tagami, Yasunobu; Matsufuji, Takashi; Ikigai, Hajime; Narita, Takayuki; Oishi, Yushi

doi:10.1246/bcsj.82.536

Cited by 5 publications

(1 citation statement)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the phase separation at the micrometer scale in a monomolecular film at the air–water interface (Langmuir monolayer), factors affecting the phase-separated morphology have been examined with various microscopic techniques and theoretical models. − Their behaviors at extremely small sizes have been also investigated using atomic force microscopy (AFM). − These studies revealed that the size and shape of domains in the monolayer are determined by a balance of forces, namely, the electrostatic interaction between molecules in each domain and line tension at the domain boundary. The line tension depends on the height difference between the domain and matrix and on the surface energy of their regions.…”

Section: Introductionmentioning

confidence: 99%

Structural-Size Control of Domain from Nano to Micro: Logical Balancing between Attractive and Repulsive Interactions in Two Dimensions

et al. 2019

Self Cite

View full text Add to dashboard Cite

Molecules aggregate to form a structure through various interactions involving dispersion force, electrostatic force, and so on. In two-dimensional systems, a surface energetic effect is further important for the molecular aggregation structure. We show that the domain size and its morphology in the mixed monomolecular film composed of hydrocarbon and fluorocarbon skeletons with different surface free energies extremely change depending on pH and NaCl concentration in the subphase. Such morphological changes can be interpreted by the balance of dipole density and line tension, which help in the development of an understanding of phase separation phenomena and provide a novel technique for structural control in two dimensions.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural-Size Control of Domain from Nano to Micro: Logical Balancing between Attractive and Repulsive Interactions in Two Dimensions

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

Atomic force microscopy study of the complexation of sterols and the glycoalkaloid α-tomatine in Langmuir-Blodgett monolayers

Nepal

Stine

2023

Chemistry and Physics of Lipids

View full text Add to dashboard Cite

Interactions between Sex Hormones and a 1,2-Di-O-myristoyl-sn-glycero-3-phosphocholine Molecular Layer: Characteristics of the Liposome, Surface Area versus Surface Pressure of the Monolayer, and Microscopic Observation

NakataSatoshi¹,

IkeguchiAyaka²,

ShiotaTakaya³

et al. 2011

Bulletin of the Chemical Society of Japan

View full text Add to dashboard Cite

The interactions between sex hormones (estradiol and testosterone) and a 1,2-di-O-myristoyl-sn-glycero-3-phosphocholine (DMPC) molecular layer were investigated by observing the liposome and the surface area (A) vs. surface pressure (π) of the DMPC monolayer at an air–water interface. The shape and size of the liposome changed with the addition of estradiol and testosterone. The π–A isotherm, the time variation of the surface pressure, and the microscopic observation of monolayer were examined to clarify the different effects of the steroid hormones. These experimental results are discussed in relation to the formation of a rigid membrane due to hydrogen bonding between estradiol and DMPC.

show abstract

Pressure Dependence of Aggregation State of (DMPC/Cholesterol) Mixed Monolayer Based on AFM Observation

Abstract: We investigated the aggregation state of a mixed monolayer of 1,2-dimyristoyl-sn-glycero-3-phospholine and cholesterol at different surface pressures by AFM. AFM images revealed a nanoscopically separated structure despite a macroscopic homogenization of the monolayer under compression.

Cited by 5 publications

References 32 publications

Structural-Size Control of Domain from Nano to Micro: Logical Balancing between Attractive and Repulsive Interactions in Two Dimensions

Structural-Size Control of Domain from Nano to Micro: Logical Balancing between Attractive and Repulsive Interactions in Two Dimensions

Atomic force microscopy study of the complexation of sterols and the glycoalkaloid α-tomatine in Langmuir-Blodgett monolayers

Interactions between Sex Hormones and a 1,2-Di-O-myristoyl-sn-glycero-3-phosphocholine Molecular Layer: Characteristics of the Liposome, Surface Area versus Surface Pressure of the Monolayer, and Microscopic Observation

Contact Info

Product

Resources

About