Supramolecular "leeks" of a fluorinated hybrid amphiphile that self-assembles into a disordered columnar phase

Mohan N. Wadekar; Ludmila Abezgaus; Kristina Djanashvili; Wolter F. Jager; Eduardo Mendes; Stephen J. Picken; Danino Dganit

doi:10.1021/jp311337z

Supramolecular "leeks" of a fluorinated hybrid amphiphile that self-assembles into a disordered columnar phase

Mohan N. Wadekar, Ludmila Abezgaus, Kristina Djanashvili, Wolter F. Jager^*, Eduardo Mendes, Stephen J. Picken, Danino Dganit

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We report on the formation of unprecedented "leek"-shaped aggregates of an anionic fluoroalkyl sulfonate surfactant (FS) and the supramolecular assembly of these aggregates into a disordered columnar phase (C_S). The leeks are formed by wrapping of 2-4 FS-water bilayers of thickness 26-28 Å into 10-20 nm thick and >100 nm long structures, in the concentration regime of 63-70 wt % FS. A lamellar (L_α) lyotropic liquid-crystalline (LLC) phase forms at higher concentration, between 70 and 84 wt %. In the two LLC phases, the FS molecules were organized in an interdigitated or tilted fashion, or a combination of the two. Such a unique supramolecular self-assembly of amphiphiles has not been predicted nor observed before. This self-assembly behavior could be of interest to various fields like microencapsulation, nanomedicine, and membrane protein crystallization.

Original language	English
Pages (from-to)	2820-2826
Number of pages	7
Journal	Journal of Physical Chemistry B
Volume	117
Issue number	9
DOIs	https://doi.org/10.1021/jp311337z
State	Published - 7 Mar 2013
Externally published	Yes

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title = "Supramolecular {"}leeks{"} of a fluorinated hybrid amphiphile that self-assembles into a disordered columnar phase",

abstract = "We report on the formation of unprecedented {"}leek{"}-shaped aggregates of an anionic fluoroalkyl sulfonate surfactant (FS) and the supramolecular assembly of these aggregates into a disordered columnar phase (CS). The leeks are formed by wrapping of 2-4 FS-water bilayers of thickness 26-28 {\AA} into 10-20 nm thick and >100 nm long structures, in the concentration regime of 63-70 wt % FS. A lamellar (Lα) lyotropic liquid-crystalline (LLC) phase forms at higher concentration, between 70 and 84 wt %. In the two LLC phases, the FS molecules were organized in an interdigitated or tilted fashion, or a combination of the two. Such a unique supramolecular self-assembly of amphiphiles has not been predicted nor observed before. This self-assembly behavior could be of interest to various fields like microencapsulation, nanomedicine, and membrane protein crystallization.",

author = "Wadekar, {Mohan N.} and Ludmila Abezgaus and Kristina Djanashvili and Jager, {Wolter F.} and Eduardo Mendes and Picken, {Stephen J.} and Danino Dganit",

year = "2013",

month = mar,

day = "7",

doi = "10.1021/jp311337z",

language = "英语",

volume = "117",

pages = "2820--2826",

journal = "Journal of Physical Chemistry B",

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TY - JOUR

T1 - Supramolecular "leeks" of a fluorinated hybrid amphiphile that self-assembles into a disordered columnar phase

AU - Wadekar, Mohan N.

AU - Abezgaus, Ludmila

AU - Djanashvili, Kristina

AU - Jager, Wolter F.

AU - Mendes, Eduardo

AU - Picken, Stephen J.

AU - Dganit, Danino

PY - 2013/3/7

Y1 - 2013/3/7

N2 - We report on the formation of unprecedented "leek"-shaped aggregates of an anionic fluoroalkyl sulfonate surfactant (FS) and the supramolecular assembly of these aggregates into a disordered columnar phase (CS). The leeks are formed by wrapping of 2-4 FS-water bilayers of thickness 26-28 Å into 10-20 nm thick and >100 nm long structures, in the concentration regime of 63-70 wt % FS. A lamellar (Lα) lyotropic liquid-crystalline (LLC) phase forms at higher concentration, between 70 and 84 wt %. In the two LLC phases, the FS molecules were organized in an interdigitated or tilted fashion, or a combination of the two. Such a unique supramolecular self-assembly of amphiphiles has not been predicted nor observed before. This self-assembly behavior could be of interest to various fields like microencapsulation, nanomedicine, and membrane protein crystallization.

AB - We report on the formation of unprecedented "leek"-shaped aggregates of an anionic fluoroalkyl sulfonate surfactant (FS) and the supramolecular assembly of these aggregates into a disordered columnar phase (CS). The leeks are formed by wrapping of 2-4 FS-water bilayers of thickness 26-28 Å into 10-20 nm thick and >100 nm long structures, in the concentration regime of 63-70 wt % FS. A lamellar (Lα) lyotropic liquid-crystalline (LLC) phase forms at higher concentration, between 70 and 84 wt %. In the two LLC phases, the FS molecules were organized in an interdigitated or tilted fashion, or a combination of the two. Such a unique supramolecular self-assembly of amphiphiles has not been predicted nor observed before. This self-assembly behavior could be of interest to various fields like microencapsulation, nanomedicine, and membrane protein crystallization.

UR - http://www.scopus.com/inward/record.url?scp=84875034130&partnerID=8YFLogxK

U2 - 10.1021/jp311337z

DO - 10.1021/jp311337z

M3 - 文章

C2 - 23394578

AN - SCOPUS:84875034130

SN - 1520-6106

VL - 117

SP - 2820

EP - 2826

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 9

ER -

Supramolecular "leeks" of a fluorinated hybrid amphiphile that self-assembles into a disordered columnar phase

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