Linked Life Data

18161708

Source:http://linkedlifedata.com/resource/pubmed/id/18161708

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
2008-2-26
pubmed:abstractText
Simple L-lysine derivatives, N(alpha)-hexanoyl-N(epsilon)-lauroyl-L-lysine (1), its alkali metal salts (2-4), and two-component compounds that consist of 1 with 2 to 4, were synthesized and their hydrogelation and organogelation properties were studied. Addition of hydrochloric acid to an aqueous solution of the alkali metal salt at room temperature produced a translucent hydrogel. This hydrogelation occurred as a result of a change in nanostructure from micelle-like aggregates to nanofibers, which was induced by partial protonation of the carboxylate to form a carboxylic acid. On the other hand, two-component low-molecular-weight gelators exhibited amphiphilic gelation behavior and functioned as not only hydrogelators, but also as organogelators. FTIR studies revealed that lateral ionic interactions between the carboxylate, alkali metal cation, carboxylic acid, and protons, in addition to hydrogen-bonding and van der Waals interactions play a very important role in hydrogelation. Furthermore, it was found that the water-insoluble carboxylic acid compound underwent a precipitation-dissolution transition with a thermally reversible sol-gel transition in the two-component gelator systems.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0947-6539
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2133-44
pubmed:dateRevised
2009-8-4
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Supramolecular gels formed by amphiphilic low-molecular-weight gelators of N alpha,N epsilon-diacyl-L-lysine derivatives.
pubmed:affiliation
Graduate School of Science and Technology, Shinshu University, Ueda, Nagano 386-8567, Japan. msuzuki@shinshu-u.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't