Anion tuning of chiral bis(urea) low molecular weight gels

Gareth O. Lloyd; Marc-Oliver M. Piepenbrock; Jonathan A. Foster; Nigel Clarke; Jonathan W. Steed

doi:10.1039/c1sm06448g

Anion tuning of chiral bis(urea) low molecular weight gels

Gareth O. Lloyd, Marc-Oliver M. Piepenbrock, Jonathan A. Foster, Nigel Clarke, Jonathan W. Steed^*

^*Corresponding author for this work

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

81 Citations (Scopus)

Abstract

A series of chiral bis(urea) compounds based on oligomethylene spacers with S-phenylethyl end groups have been investigated as low molecular weight gelators. The series shows gelation of a variety of liquids and their structural, morphological and rheological properties are reported. The bis(urea) compounds also act as supramolecular hosts for anions such as chloride and acetate and the weakening of the gels by competitive anion complexation on this series of archetypical, low molecular weight gels is reported. Modification of gel properties using gel mixtures is also described and the gelation process studied using a fluorescent napthyl analogue.

Original language	English
Pages (from-to)	204-216
Number of pages	13
Journal	Soft Matter
Volume	8
Issue number	1
DOIs	https://doi.org/10.1039/c1sm06448g
Publication status	Published - 2012

Keywords

SELECTIVE GELATION
ORGANIC-SOLVENTS
AMINO-ACID-DERIVATIVES
CONTROLLED-RELEASE
OIL/WATER MIXTURES
O TAPE SYNTHON
SOL PHASE-TRANSITION
RESPONSIVE HYDROGEL
SUPRAMOLECULAR GELS
FUNCTIONAL MATERIALS

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title = "Anion tuning of chiral bis(urea) low molecular weight gels",

abstract = "A series of chiral bis(urea) compounds based on oligomethylene spacers with S-phenylethyl end groups have been investigated as low molecular weight gelators. The series shows gelation of a variety of liquids and their structural, morphological and rheological properties are reported. The bis(urea) compounds also act as supramolecular hosts for anions such as chloride and acetate and the weakening of the gels by competitive anion complexation on this series of archetypical, low molecular weight gels is reported. Modification of gel properties using gel mixtures is also described and the gelation process studied using a fluorescent napthyl analogue.",

keywords = "SELECTIVE GELATION, ORGANIC-SOLVENTS, AMINO-ACID-DERIVATIVES, CONTROLLED-RELEASE, OIL/WATER MIXTURES, O TAPE SYNTHON, SOL PHASE-TRANSITION, RESPONSIVE HYDROGEL, SUPRAMOLECULAR GELS, FUNCTIONAL MATERIALS",

author = "Lloyd, {Gareth O.} and Piepenbrock, {Marc-Oliver M.} and Foster, {Jonathan A.} and Nigel Clarke and Steed, {Jonathan W.}",

year = "2012",

doi = "10.1039/c1sm06448g",

language = "English",

volume = "8",

pages = "204--216",

journal = "Soft Matter",

issn = "1744-683X",

publisher = "Royal Society of Chemistry",

number = "1",

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T1 - Anion tuning of chiral bis(urea) low molecular weight gels

AU - Lloyd, Gareth O.

AU - Piepenbrock, Marc-Oliver M.

AU - Foster, Jonathan A.

AU - Clarke, Nigel

AU - Steed, Jonathan W.

PY - 2012

Y1 - 2012

N2 - A series of chiral bis(urea) compounds based on oligomethylene spacers with S-phenylethyl end groups have been investigated as low molecular weight gelators. The series shows gelation of a variety of liquids and their structural, morphological and rheological properties are reported. The bis(urea) compounds also act as supramolecular hosts for anions such as chloride and acetate and the weakening of the gels by competitive anion complexation on this series of archetypical, low molecular weight gels is reported. Modification of gel properties using gel mixtures is also described and the gelation process studied using a fluorescent napthyl analogue.

AB - A series of chiral bis(urea) compounds based on oligomethylene spacers with S-phenylethyl end groups have been investigated as low molecular weight gelators. The series shows gelation of a variety of liquids and their structural, morphological and rheological properties are reported. The bis(urea) compounds also act as supramolecular hosts for anions such as chloride and acetate and the weakening of the gels by competitive anion complexation on this series of archetypical, low molecular weight gels is reported. Modification of gel properties using gel mixtures is also described and the gelation process studied using a fluorescent napthyl analogue.

KW - SELECTIVE GELATION

KW - ORGANIC-SOLVENTS

KW - AMINO-ACID-DERIVATIVES

KW - CONTROLLED-RELEASE

KW - OIL/WATER MIXTURES

KW - O TAPE SYNTHON

KW - SOL PHASE-TRANSITION

KW - RESPONSIVE HYDROGEL

KW - SUPRAMOLECULAR GELS

KW - FUNCTIONAL MATERIALS

U2 - 10.1039/c1sm06448g

DO - 10.1039/c1sm06448g

M3 - Article

SN - 1744-683X

VL - 8

SP - 204

EP - 216

JO - Soft Matter

JF - Soft Matter

IS - 1

ER -

Anion tuning of chiral bis(urea) low molecular weight gels

Abstract

Keywords

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