TY  - JOUR
AU  - Alegre-Requena, J.V.
AU  - Häring, M.
AU  - Sonsona, I.G.
AU  - Abramov, A.
AU  - Marqués-López, E.
AU  - Herrera, R.P.
AU  - Díaz, D.D.
T1  - Synthesis and supramolecular self-assembly of glutamic acid-based squaramides
LA  - eng
PY  - 2018
SP  - 2065
EP  - 2073
T2  - Beilstein Journal of Organic Chemistry
SN  - 1860-5397
VL  - 14
PB  - Beilstein-Institut Zur Forderung der Chemischen Wissenschaften
AB  - We describe the preparation and characterization of two new unsymmetrical squaramide-based organogelators. The synthesis of the compounds was carried out by subsequent amine condensations starting from dimethyl squarate. The design of the gelators involved a squaramide core connected on one side to a long aliphatic chain and on the other side to a glutamic acid residue. The gelator bearing the free carboxylic groups showed a lower gelation capacity than its precursor diester derivative. Some selected gels were further studied by infrared spectroscopy, rheology and electron microscopy. Critical gelation concentrations and gel-to-sol transition temperatures were also determined for each case. In addition, the superior squaramide diester gelator was compared with an analogue triazole-based gelator in terms of critical gelation concentration, gelation kinetics and thermal phase transition.
DO  - 10.3762/BJOC.14.180
UR  - https://portalciencia.ull.es/documentos/60f20985e3faa365b3a8602c
DP  - Dialnet - Portal de la Investigación
ER  -