Comparing Molecular Gelators and Nongelators Based on Solubilities and Solid-State Interactions

被引：32

作者：

Chen, Jing

Kampf, Jeff W.

McNeil, Anne J. ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA

来源：

LANGMUIR | 2010年 / 26卷 / 16期

关键词：

STRUCTURE-PROPERTY CORRELATION; MASS ORGANIC GELATOR; GEL-PHASE MATERIALS; SELECTIVE GELATION; INTERMOLECULAR INTERACTIONS; SUPRAMOLECULAR GELS; DICARBOXYLIC-ACID; WEIGHT GELATORS; BILE-ACID; WATER;

D O I：

10.1021/la102500u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The relationship between molecular structure and gelation ability was investigated for a series of pyridine-based compounds. Nineteen compounds were synthesized and screened for gelation. Of these, eight were discovered to be gelators for a variety of organic solvent/water combinations. Solubility studies on the bulk powders revealed that gelators and nongelators are indistinguishable based on their room temperature solubilities. Likewise, X-ray diffraction experiments indicated that the presence (or absence) of ID intermolecular interactions does not correlate with gelation ability. van't Hoff analyses of the temperature-dependent solubilities revealed that the majority of gelators have higher dissolution enthalpies and entropies than nongelators. In combination, these data suggest a complex relationship between molecular structure and gelation ability.

引用

页码：13076 / 13080

页数：5

共 102 条

[1] Hexatriacontane organogels. The first determination of the conformation and molecular packing of a low-molecular-mass organogelator in its gelled state [J].